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An Android FTP server app runs on the phone or tablet and exposes a selected folder over the network. A computer, NAS, Android TV device, another phone, or a tablet then connects to the Android device. The Android app is the server; FileZilla, Windows File Explorer, a desktop file manager, or a web browser is the client.
Key takeaways
- WiFi FTP Server is the best general-purpose choice because it supports configurable ports, usernames, passwords, home folders, anonymous-access controls, FTPS, FileZilla, and Windows File Explorer.
- Primitive FTPd is the strongest choice for SFTP because the open-source project supports both FTP and SFTP and is distributed through F-Droid.
- FTP Tool is the most convenient choice when the computer should use a browser, but plain HTTP should be treated as local-network convenience rather than encrypted file transfer.
- FTP, FTPS, and SFTP are different protocols: FTPS encrypts FTP with TLS, while SFTP transfers files through SSH.
- Android scoped storage can restrict access to SD cards, USB storage, and protected directories, so selecting a narrow shared-storage folder is usually more reliable than exposing the entire phone.
- These recommendations are based on feature coverage, protocol support, distribution, maintenance signals, and setup suitability—not a controlled speed benchmark.
Quick comparison: which Android FTP server app is right for you?
The best FTP server app for Android depends mainly on the protocol and connection method required. Choose WiFi FTP Server for a conventional FTP or FTPS workflow, Primitive FTPd for SFTP, and FTP Tool when a browser-based HTTP transfer is more convenient than installing a desktop FTP client.
| App | Best for | FTP | FTPS | SFTP | HTTP/browser | Android minimum | Distribution and commercial model | Key limitation |
|---|---|---|---|---|---|---|---|---|
| WiFi FTP Server by Medha Apps | Most users transferring files to a PC | Yes | Yes | No; FTPS is not SFTP | No | Android 5.0+ | Google Play; free edition contains ads; paid Pro counterpart available | SD-card access may require custom mount-folder configuration |
| Primitive FTPd | Privacy-conscious and technical users | Yes | Not identified as a separate supported mode in the supplied project evidence | Yes | No | Android 8.0+ for the F-Droid listing checked | F-Droid and open-source project repository | More technical setup and potentially complicated modern storage permissions |
| FTP Tool – FTP & HTTP Server | Browser-based transfers without a desktop FTP client | Yes | Yes | Not identified in the supplied listing | Yes | Not stated in the supplied listing | Google Play; current price and advertising details should be checked before publication | Newer and less established; plain HTTP is not encrypted |
The table does not establish which app transfers files fastest. No reliable comparative speed benchmark was found in the supplied research, and app-store ratings and download counts are not controlled performance tests.
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Short decision guide
- Choose WiFi FTP Server if you want the simplest conventional FTP setup, use Windows File Explorer or FileZilla, need a configurable home folder, or want FTPS without a more technical application.
- Choose Primitive FTPd if you specifically need SFTP, prefer open-source software, use F-Droid, or are comfortable configuring a client manually.
- Choose FTP Tool if you want to open a browser on the computer and transfer files without installing a separate FTP client.
1. WiFi FTP Server: best FTP server app for most Android users
WiFi FTP Server by Medha Apps is the best overall choice for a straightforward Android-to-PC transfer. The Google Play listing identifies support for Android 5.0 and newer, configurable server ports, FTP over TLS/SSL (FTPS), usernames and passwords, configurable home folders, anonymous-access controls, Windows File Explorer, and FTP clients such as FileZilla. The current Google Play listing provides the app’s feature and compatibility details.
The app is approachable because the main workflow is familiar: choose a folder, start the server, and enter the displayed address in a computer’s FTP client. The configurable home folder also lets users expose a particular photo, document, or download directory instead of making the entire shared-storage area available.
The researched Google Play listing showed 5M+ downloads, a 4.3-star rating, and an update date of January 6, 2026. Those figures describe the listing checked for this article and can change as Google Play updates its data. The free edition contains ads; the paid WiFi Pro FTP Server listing is the relevant ad-free counterpart, although the supplied research did not establish a reliable current US price.
What are WiFi FTP Server’s important limitations?
WiFi FTP Server is not an SFTP server. The app’s listing distinguishes FTPS from SFTP, so a client configured for SFTP will not connect merely because WiFi FTP Server supports FTPS. Use an FTP-over-TLS mode in the client for FTPS.
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2. Primitive FTPd: best Android FTP server app for SFTP
Primitive FTPd is the best choice among these three when the requirement is SFTP rather than ordinary FTP or FTPS. The project documents an Android FTP and SFTP server, and the project is open source and distributed through F-Droid. The Primitive FTPd project repository documents its FTP and SFTP operation, while the F-Droid package page provides its distribution and Android compatibility information.
The F-Droid listing checked for the research showed version 8.1 requiring Android 8.0 or newer, with a suggested date of May 4, 2026. A separate July 2026 F-Droid update listing reported version 8.2, so the visible version should be checked immediately before publication rather than treated as permanent. The July 2026 F-Droid update report is the later version signal in the supplied research.
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- Supported features include Wake-on-LAN function, Green Ethernet & IEEE 802.3az-2010 (Energy Efficient Ethernet)
- Supports IPv4/IPv6 pack Checksum Offload Engine (COE) to reduce Cental Processing Unit (CPU) loading
- Compatible with Windows 8.1 or higher, Mac OS
Why would a technical user prefer Primitive FTPd?
Primitive FTPd offers an open-source alternative to an ad-supported Play Store utility and supports an SSH-based transfer protocol. SFTP is useful when encrypted transfers are important and the computer already has an SFTP-capable client such as FileZilla.
Primitive FTPd is less suitable for someone who wants a polished one-tap experience or insists on installing through Google Play. The project’s documentation also discusses Android permissions and external SD-card restrictions. Open-source distribution is useful evidence about the project’s transparency, but F-Droid availability does not automatically prove that every security or privacy property is perfect.
SFTP does not make an Android phone safe for unrestricted internet exposure by itself. Authentication, software updates, network firewalling, the selected folder, and whether the server is reachable from outside the local network still matter.
3. FTP Tool: best for browser-based Android file transfers
FTP Tool – FTP & HTTP Server is the best option when the computer should connect through a web browser instead of a dedicated FTP client. The Google Play listing describes FTP, FTPS, and HTTP server modes, allowing a computer to use either a conventional FTP client or the app’s browser link. The FTP Tool Google Play listing documents its FTP, FTPS, HTTP, and browser workflows.
HTTP is convenient because most desktop users already have Chrome, Edge, Firefox, or another current browser. Start the HTTP server, copy the address displayed by the app, open the address on the computer, and use the web interface to upload or download files.
Plain HTTP is not encrypted. Use the HTTP mode only as a convenient local transfer method on a trusted network, and do not assume that the app’s separate FTPS support makes its HTTP link secure. FTP Tool is also a newer and less established option than WiFi FTP Server or Primitive FTPd based on the evidence supplied for this comparison.
Can a modern browser open an FTP address?
Modern browsers generally no longer support the old built-in method of opening ftp:// links. Use FTP Tool’s HTTP address in a browser, or use a dedicated FTP client for FTP and FTPS connections. FTP Tool’s current listing specifically recommends its HTTP link or a dedicated FTP client instead of relying on direct browser FTP navigation.
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Is FTP still useful on Android?
FTP remains useful for large local transfers when a USB cable is inconvenient. An Android FTP server can temporarily expose photos, videos, music, documents, backups, or a selected folder to a Windows PC, Mac, Linux computer, Android TV device, NAS, tablet, or another phone on the same network.
FTP is not automatically the best tool for cloud backup, sharing files with someone outside the home, permanent remote access, or highly sensitive data. Cloud storage is generally more suitable for account-based remote sharing, while a NAS or home server is better for persistent multi-user access and backups. A USB cable is often the most predictable option for one very large transfer.
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Does the computer need special software?
The computer does not always need a special application, but the connection method depends on the Android server app and protocol.
| Computer connection method | What it requires | When to use it |
|---|---|---|
| Dedicated FTP client | FileZilla or another client configured for FTP, FTPS, or SFTP | Best for repeat transfers, visible queues, folders, and resume support |
| Desktop file manager | A file manager that supports the relevant FTP connection type | Convenient for basic browsing and copying; support varies by operating system |
| Web browser | An Android app exposing HTTP, such as FTP Tool | Best when installing a desktop client is undesirable |
FileZilla’s official project site is a suitable source for the commonly used desktop client, but FileZilla is a client, not an Android FTP server. The Android app still has to run the server and display the address, username, password, and port.
Do the Android device and computer need to be on the same Wi-Fi?
Usually, the Android device and computer need to be reachable on the same local network. The devices do not necessarily need the same internet connection, but the computer must be able to route traffic to the Android server’s local IP address.
A computer may connect through the Android phone’s hotspot if the selected app and hotspot configuration allow device-to-device communication. WiFi Pro FTP Server specifically advertises Wi-Fi tethering or hotspot support. The WiFi Pro FTP Server listing describes its Wi-Fi and tethering-mode support.
Guest Wi-Fi, hotel networks, school networks, corporate networks, and public hotspots may isolate connected devices. VPNs, firewalls, mobile-data routing, and router client-isolation settings can also prevent a connection even when both devices appear to use the same Wi-Fi name.
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How do you set up an Android FTP server?
The labels differ between app versions, but the following process works as a general setup model for WiFi FTP Server, Primitive FTPd, and FTP Tool.
- Install the app from its official Google Play, F-Droid, or project distribution page.
- Grant only the storage or folder access required. Start with a normal folder in shared internal storage rather than the entire device.
- Select the shared folder. Choose a photo, download, document, or other specific folder. Select an SD-card folder through the app’s folder or mount-point picker if the app and Android version support it.
- Create a username and strong password. Disable anonymous login unless a temporary, tightly controlled reason requires it.
- Select the protocol. Use FTP for compatibility on a trusted temporary network, FTPS where TLS is supported, SFTP in Primitive FTPd when SSH encryption is required, or HTTP in FTP Tool for convenient browser access on a trusted local network.
- Start the server. Keep the app’s displayed address, protocol, and port visible.
- Connect from the computer. Use the exact address and port shown by the app rather than copying an example from an article.
- Stop the server after the transfer. A stopped server cannot accept a new connection while the app is not running the service.
An app may display an address resembling ftp://192.168.1.25:2121, sftp://192.168.1.25:2222, or http://192.168.1.25:8080. These are illustrative formats only. Use the exact protocol, IP address, and port displayed by the selected app.
How do you connect with FileZilla?
- Open FileZilla on the computer.
- Enter the Android address or IP address in the host field.
- Enter the username and password shown or configured in the Android app.
- Enter the displayed port.
- Select the matching protocol: FTP, FTP over TLS/FTPS, or SFTP over SSH.
- Connect and locate the Android folder in the remote-pane file list.
- Drag files between the computer pane and Android remote pane.
- Stop the Android server when the transfer finishes.
Protocol matching is essential. SFTP must be selected for Primitive FTPd’s SFTP mode; ordinary FTP and FTPS settings are different. FTPS requires an FTP-over-TLS setting, not the SFTP setting.
How do you connect with FTP Tool’s browser mode?
- Start FTP Tool’s HTTP server.
- Copy the HTTP address displayed by FTP Tool.
- Open the address in a current browser on the computer.
- Upload or download files through the web interface.
- Stop the HTTP server immediately after the transfer.
What do Android storage restrictions mean for FTP server apps?
Modern Android uses scoped storage by default for apps targeting Android 10/API 29 and later. Scoped storage limits arbitrary access to other apps’ private directories and changes how apps reach shared storage. Android’s scoped-storage documentation explains the boundary between app-specific and shared storage.
Android’s MANAGE_EXTERNAL_STORAGE permission can provide broader access to shared storage, the root of an SD card, and USB OTG storage, but the permission still does not provide unrestricted access to other apps’ private directories under restricted Android/data paths. Google Play also limits the acceptable uses of broad all-files access. Android’s all-files-access documentation describes the SD-card, USB, and protected-directory limits.
- Prefer a specific shared-storage folder over the entire phone.
- Expect different behavior across Android 10 through Android 16 and across Samsung, Pixel, Xiaomi, OnePlus, and other manufacturers.
- Do not assume that a folder visible in a desktop file manager is available to an Android server app.
- If an SD card is missing, use the app’s mount-folder or Android folder-permission workflow.
- Do not expose
Android/dataor other protected directories as though ordinary storage access were available.
Which protocol is safest for Android file transfers?
SFTP is generally the clearest secure-protocol choice in this group when Primitive FTPd and the computer’s client are configured correctly. FTPS is also encrypted, but FTPS and SFTP use different protocols and different client settings. Plain FTP and plain HTTP do not provide built-in encryption.
| Protocol | Encryption | Client compatibility | Best use |
|---|---|---|---|
| FTP | No built-in encryption | Very broad | Temporary transfers on a trusted private network |
| FTPS | TLS/SSL | Broad, but the client must use FTP-over-TLS mode | Encrypted transfers where FTP compatibility is useful |
| SFTP | SSH encryption | Requires an SFTP-capable client | Secure transfers for technical users |
| HTTP | Not encrypted unless HTTPS is explicitly used | Any current web browser | Quick local browser transfer on a trusted network |
Minimum safe configuration
- Use a strong password.
- Turn off anonymous login.
- Share only the folder needed for the transfer.
- Use FTPS or SFTP for sensitive files where the app and client support the protocol.
- Use a private home network rather than public Wi-Fi.
- Keep the server disabled when no transfer is active.
- Do not casually forward the server port from the router to the public internet.
- Do not publish the phone’s server address.
- Review connected clients or server logs when the app offers those controls.
How do you troubleshoot an Android FTP server connection?
| Symptom | Likely causes | Recovery steps |
|---|---|---|
| Computer cannot connect | Wrong network, stopped server, incorrect IP or port, VPN, firewall, or client isolation | Confirm both devices are reachable, copy the exact displayed address, verify the protocol, temporarily test without a VPN, and check router and firewall isolation |
| Connection uses the wrong protocol | FTP, FTPS, SFTP, and HTTP settings were mixed | Match the client mode exactly: SFTP for SFTP, FTP-over-TLS for FTPS, and a browser URL for HTTP |
| SD card is not visible | Missing folder permission, unsupported mount workflow, unmounted card, or Android restriction | Use the app’s folder picker, grant the required card folder, confirm the card is writable, and test a narrower folder |
| Files appear but cannot be changed | Read-only permission, download-only server setting, protected directory, read-only card, or wrong account | Test a new shared-storage folder, use an authenticated account, recheck write permissions, and confirm the client is uploading rather than browsing only |
| Server stops when the screen turns off | Battery optimization, background restrictions, Wi-Fi sleep, or a stopped background service | Allow background activity, exempt the app from battery optimization where available, keep its notification enabled, and test with the screen awake |
| Large transfer is slow or fails | Weak Wi-Fi, router congestion, heat, battery saver, VPN overhead, FTP mode, low storage, or a slow SD card | Improve the Wi-Fi signal, disable battery saver temporarily, check storage, test passive/active FTP mode, and use a client that supports resume |
Why does the server stop when the screen turns off?
Android background-service restrictions and manufacturer battery-management settings can stop or limit a long-running server. Android documentation describes background services and foreground-service rules, while later Android releases add further restrictions affecting long-running data-transfer work. Android’s background-service documentation explains the general service restrictions, and Android 15’s behavior-change documentation covers relevant background and data-sync changes.
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Allow background activity for the selected app where the phone provides that control, disable battery optimization for the app if necessary, keep the server notification enabled, and test a long transfer while the screen remains awake. Do not assume that every app will remain active indefinitely in the background on every Android device.
What should you use instead of an Android FTP server?
An Android FTP server is best for temporary local access. Consider a USB cable for a predictable one-time bulk transfer, Quick Share or Nearby Share for simple device-to-device sharing, a verified SMB server app for network-share compatibility, WebDAV or cloud sync for recurring multi-device workflows, and a NAS or home server for persistent storage, multiple users, permissions, and backups.
Those alternatives solve different problems and should not automatically be treated as better. A phone FTP server is inexpensive and quick to disable, while a NAS or cloud service is more appropriate when files must remain available after the phone leaves the network.
Frequently Asked Questions
Can an Android FTP server work without internet access?
Yes. An Android FTP server can transfer files over a local Wi-Fi network without an internet connection, provided the computer and Android device can reach each other. A phone hotspot may also work when the hotspot permits device-to-device communication.
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Is FTPS the same as SFTP?
No. FTPS is FTP protected with TLS/SSL, while SFTP is file transfer over SSH. An app that supports FTPS does not automatically support SFTP, and the computer client must be configured for the exact protocol used by the Android app.
Can I use an Android FTP server over public Wi-Fi?
You should avoid using plain FTP or plain HTTP over public Wi-Fi because those protocols do not provide built-in encryption. Use a trusted private network, prefer SFTP or FTPS for sensitive files, and stop the server immediately after the transfer.
Why can an Android FTP app see internal storage but not the SD card?
Android storage permissions and manufacturer-specific behavior can limit SD-card access. Use the app’s folder or mount-point picker, grant access through Android’s system folder selector, confirm that the card is mounted and writable, and test a specific folder instead of assuming the entire card is available.
The Bottom Line
Bottom line: WiFi FTP Server is the best Android FTP server app for most local phone-to-PC transfers because its setup and conventional FTP/FTPS features are accessible. Choose Primitive FTPd when SFTP or open-source software matters more than simplicity, and choose FTP Tool when browser-based HTTP sharing is the priority. Whichever app you use, expose the smallest necessary folder, disable anonymous access, avoid casual internet exposure, and stop the server after transferring files.
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