OnSIP vs Blink WebRTC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnSIP
This app extends your business phone system to your mobile device, enabling HD voice and video calls, contact monitoring, and voicemail management. Stay connected with clients and colleagues from anywhere, without needing extra hardware.
- HD voice and video calls
- Voicemail management
- Contact availability monitoring
- Call history
- Remote work connectivity
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OnSIP brings your business phone to you, whether you're at the office, at a client's site, or working remotely. Connect with customers, partners, vendors, and coworkers from your OnSIP account on your iPhone. With OnSIP, you can take advantage of standard business phone features without the additional hardware. Make and receive HD voice and video calls, monitor contact availability, check recent call history, and manage your voicemail in one simple interface.
Blink WebRTC
This app provides secure audio and video calls, messaging, and file transfers using the SIP protocol. It supports multiple devices, call recording, and end-to-end encryption for all communications.
- Audio and video calls
- SIP messaging
- Audio call recording
- Advanced file transfers
- End-to-end encryption
- Multiparty conferencing
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Open, federated SIP messaging * 1-to-1 audio and video calls * Receive calls from web browsers * Multiparty conferencing for all media * Telephony features * Rich messaging (remote deletion, editing, replies, reactions) * File sharing to and from other mobile applications * End-to-end encryption for all media (zRTP and PGP) * Location sharing (meet-me, caregiver tracking) * Screen sharing with remote pointer support * Support for phones and tablets in landscape and portrait modes * Synchronization between multiple devices (media and contacts) * History management and data export
Screenshots
Verdict
The clearest difference is review sentiment: Blink WebRTC at 100% against OnSIP's 8%. Blink WebRTC also leads on rating (5.0 vs 2.3) and update cadence (every 2 days vs every 2 months). OnSIP's advantage is ratings volume (71 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Blink WebRTC holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: OnSIP has 71 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 8% of OnSIP's written reviews are positive against 100% of Blink WebRTC's.
OnSIP ships an update every 2 months, Blink WebRTC every 2 days. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.
| Parameter | OnSIP | Blink WebRTC |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (71 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 7.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 71 — better | 2 |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 26 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | OnSIP | AG Projects |
Customer experience
OnSIP
Blink WebRTC
In-app purchases
OnSIP
No in-app purchases
Blink WebRTC
No in-app purchases
