# BT OnePhone Mobile Application vs Thirdfort

The clearest difference is rating: Thirdfort at 4.5 against BT OnePhone Mobile Application's 4.0. Thirdfort also leads on ratings volume (707 vs 1) and update cadence (every 3 weeks vs every 2 months). BT OnePhone Mobile Application's advantage is review sentiment (30% vs 16%) and iOS requirement (14.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Thirdfort holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Thirdfort has 707 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 30% of BT OnePhone Mobile Application's written reviews are positive against 16% of Thirdfort's, so the app with the better star average is not the one people write more warmly about.

BT OnePhone Mobile Application ships an update every 2 months, Thirdfort every 3 weeks. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | BT OnePhone Mobile Application | Thirdfort |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/bt-onephone-mobile-application/id903053398/reviews) | **[4.5 (707 ratings)](https://appshunter.io/ios/app/thirdfort/id1517893677/reviews)** |
| Number of ratings | 1 | **707** |
| Positive reviews | **30.0% of reviews** | 16.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 124 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BT OnePhone Ltd](https://appshunter.io/developer/903053401) | [Thirdfort](https://appshunter.io/developer/1451178083) |

## What reviewers say

### BT OnePhone Mobile Application

[App page](https://appshunter.io/ios/app/bt-onephone-mobile-application/id903053398)

This app unifies your fixed lines, mobile phones, and phone system into a single hosted service. It allows customers to reach you on your mobile via your office number and provides control over your service on the go. Manage your presence, voicemails, and call history.

**Highlights:** Unified fixed and mobile communication, Call redirection ('Follow-me'), Presence status management, Voicemail access, Company directory with offline access, Local directory sync for contacts

**Features:** macOS Compatibility

**In-app purchases:** none


### Thirdfort

[App page](https://appshunter.io/ios/app/thirdfort/id1517893677)

Securely verify your identity and share necessary documents without the need for printing, posting, or in-person visits. This app offers bank-grade encryption and is GDPR compliant, making it a trusted solution for regulated businesses and individuals.

**Highlights:** Identity verification, Document sharing, Bank-grade encryption, GDPR compliant, ICO registered, Live chat support

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick verification process
- 🔒 Secure ID verification

**What reviewers complain about**

- 🐛 Buggy and unreliable
- 🤯 Overly complicated and confusing
- 🤔 Intrusive and requests too much personal information
- 💤 Slow and unresponsive
- 🙄 Poor customer support

**Reported bugs**

- Inability to scan passport chip
- Inconsistent photo capture requirements
- App crashes and freezes
- Connectivity issues

**Requested features**

- Clearer instructions and guidance
- More user-friendly interface
- Ability to save progress and return later
- Support for more document types and formats


## Frequently asked questions

### Is BT OnePhone Mobile Application free?

BT OnePhone Mobile Application is free to download, with no in-app purchases.

### Is Thirdfort free?

Thirdfort is free to download, with no in-app purchases.

### Which has better reviews, BT OnePhone Mobile Application or Thirdfort?

Thirdfort is rated higher. BT OnePhone Mobile Application averages 4.0 out of 5 from 1 ratings, while Thirdfort averages 4.5 from 707 ratings.

### Do BT OnePhone Mobile Application or Thirdfort have ads?

Neither BT OnePhone Mobile Application nor Thirdfort shows ads.

### Which is updated more often, BT OnePhone Mobile Application or Thirdfort?

BT OnePhone Mobile Application ships an update every 2 months, and Thirdfort every 3 weeks. Most recently, BT OnePhone Mobile Application was updated on October 4, 2026 and Thirdfort on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*