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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteDoes “100% local AI” mean your audio never leaves your device? Only if the claim covers the entire feature workflow—not just speech recognition—and excludes sending audio, transcripts, summaries, or related request content to a remote service. A local transcription step does not establish that later summarization, assistant responses, storage, or syncing also stay on your device.
What “100% local” should mean
A precise claim identifies the feature and says that the relevant audio and the data derived from it are processed on your device, with none of that content sent to a remote service. The scope matters: a product might recognize speech locally but use a server to generate a response or sync a transcript.
Check each stage separately: microphone capture, speech recognition, transcription, summarization, response generation, storage, backup, sync, and third-party integrations. A “local AI” label that covers only one stage should say so; it is not evidence that the whole workflow is local.
How audio features can mix local and cloud processing
Apple: local processing with a cloud path
Apple describes Apple Intelligence as combining on-device processing with Private Cloud Compute. Its privacy page says the device indicates whether relevant speech is processed on-device, while its wording—audio is processed on-device “whenever possible”—does not promise that every request stays local. Apple also says Apple Intelligence may decide that a request needs Private Cloud Compute. A feature with that cloud path is not “100% local.” Apple’s Apple Intelligence privacy information explains the distinction.
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For Siri and Dictation, Apple’s notice says that when speech is not processed on-device, audio may be sent to Apple servers. The notice also discusses contextual information and request history, and explains that third-party app terms apply when Siri interacts with those services. That is why checking only whether raw audio is transmitted can miss other relevant data. See Apple’s Siri, Dictation & Privacy notice for the feature-specific details.
Google: a setting with a defined scope
Google’s help page describes personalized speech recognition for Pixel 7 and Pixel 7 Pro. It also warns that the setting does not control other data controls. Treat this as documentation for that feature and those devices, not as a general statement about every Pixel, Google service, or audio workflow. Google Assistant Help outlines the feature and its limits.
Rank #2
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Developer controls do not certify an entire app
Apple’s Speech framework includes a requiresOnDeviceRecognition option for a particular speech-recognition request. That API setting can be evidence about how that request is configured; it does not establish that an app’s summaries, storage, backups, or other functions also stay local. See the Apple developer documentation.
What to check before trusting the claim
- Pin down the scope. Identify the app, device, operating-system version, feature, and mode the “100% local” statement covers.
- Trace the full data path. Check whether audio, transcripts, summaries, request history, contextual details, or personalization data are transmitted during processing or later through sync, backups, telemetry, or integrations.
- Check setup and offline behavior. Find out whether models must be downloaded and whether the feature works offline after setup. Offline operation is useful evidence for that operation, but it does not prove that all data flows or background behavior are local.
- Read the feature-level privacy notice and settings. Look for explicit information about audio and derived text, retention, optional cloud processing, and any program that shares data to improve a service.
- Separate a promise from verification. A company’s policy or an on-device setting documents its stated behavior or a specific control; neither is, by itself, an independent technical audit.
This is a practical evaluation checklist, not a formal privacy standard. When comparing products, use the same questions for each: which stages run on-device, what content is transmitted, whether cloud processing is optional or automatic, what works offline, how local and server-side retention and syncing work, and how specifically the behavior is documented or independently verified.
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How to read “on-device” wording
“Processed on-device when available” is narrower than “always processed on-device.” Apple’s public materials illustrate why: they describe local processing where possible and a Private Cloud Compute path for requests that need it. Read the qualification alongside the promise, and check what the device indicates for the particular feature. Apple’s privacy page describes that distinction.
On-device processing can reduce the need to send sensitive audio to a server. In a 2021 developer presentation, Apple presenter Lauren said, “The main benefit of on-device processing is that you can build amazing features using sensitive data, without sending it to your server.” That explains the privacy rationale, but it is a historical developer presentation—not a guarantee about every current feature. The WWDC21 presentation provides that context.
Quick Recap
Best Value
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- CHAT WITH YOUR RECORDINGS USING "ASK Plaud": Unlock deeper insights with this interactive AI. Ask questions, extract key points, draft emails, and get next-step suggestions—all grounded in your original audio for reliable, ready-to-use answers
- INTELLIGENT RECORDING WITH AI DIRECTIONAL AUDIO: Enjoy seamless, intelligent recording with Plaud Note Pro. Its AI automatically switches between call and meeting modes while recording, while directional audio and real-time spatial awareness minimize noise to capture voices with crystal clarity
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