BT OnePhone Mobile Application vs Thirdfort
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BT OnePhone Mobile Application
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.
- Unified fixed and mobile communication
- Call redirection ('Follow-me')
- Presence status management
- Voicemail access
- Company directory with offline access
- Local directory sync for contacts
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BT One Phone brings your fixed lines, mobile phones and phone system together, into a single hosted service that has flexibility at its heart. That means your customers can call your office or mobile number and get through to you on your mobile phone. The BT One Phone Application allows you to control your BT One Phone service when and where you want. My Status shows you your current presence status, number of new and saved voicemail messages, your last 3 calls and other useful information depending on the privileges for your user account. Presence status can be updated while on the move The company directory can be viewed and used to automatically call colleagues and see their presence status, or whether they are busy on another call. The company directory in the app is available also in an off-line mode. Local directory sync downloads the company directory into a separate contact group locally in your mobile phone. This makes it easy to call colleagues from your contacts and incoming calls also show the name of the colleague calling you. “Follow-me” lets you easily redirect all your incoming calls to a different number
Thirdfort
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.
- Identity verification
- Document sharing
- Bank-grade encryption
- GDPR compliant
- ICO registered
- Live chat support
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More than 1.5 million people have used Thirdfort to verify their identity and share required documentation. No more printing, posting or time consuming office visits, you can do it all quickly and safely with Thirdfort. Our technology is trusted by hundreds of law firms, estate agencies and other regulated businesses across the United Kingdom. Encryption like the big banks Thirdfort uses the same high-grade security measures as all the big banks to encrypt your data. GDPR compliant We ensure that all data is collected, processed, stored and deleted in a manner that is compliant with GDPR regulations. Registered with the Information Commissioner’s Officer (ICO) We are registered with the ICO in relation to the protection of personal data. Our registration number is ZA292762. Need help? The quickest and easiest way to get help is to chat with our UK-based support team via our in app Live Chat. You can also find resources, how to guides and helpful videos online at http://help.thirdfort.com/
Screenshots
Verdict
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.
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.
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 17, 2026 respectively.
| Parameter | BT OnePhone Mobile Application | Thirdfort |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 4.5 (707 ratings) — better |
| Positive reviews | 30.0% of reviews — better | 16.5% of reviews |
| Number of ratings | 1 | 707 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | BT OnePhone Ltd | Thirdfort |
Customer experience
BT OnePhone Mobile Application
Thirdfort
Bugs and requests
BT OnePhone Mobile Application
Not enough reviews yet to summarise bugs or requests.
Thirdfort
Reported bugs
4 issues- Inability to scan passport chip
- Inconsistent photo capture requirements
- App crashes and freezes
- Connectivity issues
Requested features
4 requests- Clearer instructions and guidance
- More user-friendly interface
- Ability to save progress and return later
- Support for more document types and formats
In-app purchases
BT OnePhone Mobile Application
No in-app purchases
Thirdfort
No in-app purchases
