Head-to-head · WhatsApp Alternatives
Viber vs Delta Chat
Viber leads on 0 checks, Delta Chat on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreViber · 8.8/10
- Free planboth
- Most featuresDelta Chat · 2 of 5
Viber scores higher on our rubric for whatsapp alternatives: 8.8 against 8.7 out of 10; our editors rank them #4 and #5.
Viber is the better fit for people who want free messaging, calls and group chats. Delta Chat is the better fit for people who want encrypted chats on mobile and desktop.
- Viber fits best
People who want free messaging, calls and group chats
- Delta Chat fits best
People who want encrypted chats on mobile and desktop
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.
Side by side
| Feature | Viber 8.8/10 Visit ↗ | Delta Chat 8.7/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.8 | 8.7 |
| Ranking | #4 in WhatsApp Alternatives | #5 in WhatsApp Alternatives |
| Best for | People who want free messaging, calls and group chats | People who want encrypted chats on mobile and desktop |
| Pricing model | Free plan + paid | Free |
| Starting price | Free plan | Free plan |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop, Mobile | Desktop, Mobile |
| Platforms | Windows, macOS, Linux, iOS, Android | Windows, macOS, Linux, iOS, Android |
| Support | Docs, Tickets, Live chat · 24/7 | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Viber 1/5 · Delta Chat 2/5 | ||
| Default E2E encryption | Not checked yet | Not checked yet |
| Desktop apps | ✓ (best) | Not checked yet |
| Multi-device support | Not checked yet | Not checked yet |
| Voice and video calls | Not checked yet | ✓ (best) |
| Open source | Not checked yet | ✓ (best) |
| Specs | ||
| Max group size | 250 members | Not checked yet |
| Our review | ||
| Pros |
|
|
| Cons |
|
|
| Our verdict | Viber brings messaging and calling together across mobile and desktop, with one-to-one chats, group conversations, voice and video calls, and communities and channels. It suits people who want a familiar messenger for personal… Read the review → |
Delta Chat is a free, open-source messaging app for people who want private conversations across desktop and mobile devices. It supports private group chats, one-to-one audio and video calls, channels for one-to-many broadcasting, and… Read the review → |
Strengths and trade-offs
Viber — where it wins
- Free messaging and calls between Viber users
- End-to-end encryption for one-to-one and group chats
- Apps for Windows, macOS, Linux, iOS and Android
Where it doesn't
- An account requires a phone number
- Group chats are limited to 250 members
- Backups are not encrypted
Delta Chat — where it wins
- End-to-end encryption is enabled by default.
- Supports groups, channels, calls, and disappearing messages.
- Runs on Windows, macOS, Linux, iOS, and Android.
Where it doesn't
- Exported backups are documented as unencrypted in a 2020 assessment.
- Uses chatmail relays or classic email servers for message transport.
- Support channels are community and documentation.
- Viber8.8/10 · Free plan
A free messenger with calls, group chats and synced desktop and mobile apps.
Visit ViberFull verdict → - Delta Chat8.7/10 · Free plan
A free messaging app with default end-to-end encryption across devices.
Visit Delta ChatFull verdict →
More comparisons
- Signal vs Viber
- Telegram vs Viber
- Telegram vs Delta Chat
- Element vs Viber
- Viber vs SimpleX Chat
- Viber vs Threema
- Viber vs BiP
- Delta Chat vs Threema
All WhatsApp alternatives comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update