Reliable PBX vs VoxSun Ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Reliable PBX
Manage your business communications on the go with this mobile app. Place and receive calls, send SMS, and access voicemails from your dedicated business number. Features include call transfer, internal messaging, and contact management.
- Place and receive calls from business number
- Send and receive SMS
- Voicemail management
- Call transfer
- Internal messaging
- Business contacts
- User status indicator (BLF)
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Reliable PBX app is a mobile app for your business communications. Sign up for a free trial and start using your business phone number right away. Features: Place and receive calls from your business number Send and receive SMS Transfer calls Call log Voicemails (Listen, Download, Share, Delete) Advance search Separate Business Contacts BLF (You can see whether another user is on the phone) Internal messaging Call forwarding
VoxSun Ai
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Download the VoxSun App and start making unlimited calls from anywhere to anywhere at any time. The VoxSun app allows you to easily make and receive phones calls and check your voicemail as if you were in the office. Stay productive even while you're on the go... You need to have an account with VoxSun Telecom to use this VoxSun App. Use the VoxSun app on your iPhone to: - Make unlimited calls - Show your office number as your caller ID when you make calls from your smartphone, wherever you are or get a second dedicated phone number - Receive alerts for received messages GET YOUR BUSINESS PHONE SYSTEM IN THE CLOUD Unlimited Calling HD Voice Quality All business features included Auto Receptionist (IVR) Voice Recognition Phone Extensions Voicemail to Email Call Transfers Call Recording Second Line Virtual Fax Find Me – Follow Me SMS Text Messaging Chat VoxSun is constantly improving its services. If you have found any bugs or have a suggestion, please send us an email at support@voxsun.com. IMPORTANT: To use this app, you must have an active paid account with VoxSun Telecom.
Screenshots
Verdict
The clearest difference is update cadence: Reliable PBX at monthly against VoxSun Ai's every 3 months. On price, ads, in-app purchases and device support 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.
Reliable PBX ships an update monthly, VoxSun Ai every 3 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | Reliable PBX | VoxSun Ai |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17 — better |
| Further details — not scored | ||
| Size | 114 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | ReliablePBX | VoxSun Telecom |
In-app purchases
Reliable PBX
No in-app purchases
VoxSun Ai
No in-app purchases






