Thirdfort
Secure ID & funds verification
Only for iPhone
Free
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/
more Task: On the Right to Rent identity check, the "Are you sure you don’t have a passport?" screen now shows its options as radio buttons
Task: Buttons and links that begin a task on a check now read "Start" instead of "Begin"
4.11 5 days ago
Fix: On the Enhanced NFC ID check, the camera for the back of the passport opens with no instruction screen first, so the signature page is missed and a random page is photographed instead
Task: On the certified Right to Rent check, a tenant who declared a British or Irish passport now goes straight to the passport camera instead of choosing a document type and issuing country
Task: Text boxes on check task screens are now a consistent height and shape, with updated border and error colours
Task: Task intro and completion screens now show the full-size designed artwork, and Right to Rent has a designed icon rather than a plain green circle
Task: The empty transactions screen now talks about checks rather than transactions
Task: The document scanner used for passport and ID checks has been updated to the supplier's latest available release
4.10.0 28 Sept
Fix: On Personal details, tapping Next now explains what's missing instead of doing nothing
4.9.1 11 Sept
Task list redesign — designed per-task icons, clearer card states and wording, and simpler one-page task intros.
New right-to-rent evidence task for UK and Irish nationals who did not photograph a UK or Irish passport during their ID check.
Dates are now typed into a single DD / MM / YYYY field instead of opening a calendar picker.
Form screens gained a keyboard toolbar, and the keyboard no longer drops away as you move between fields.
Address and date questions now say why "Next" is blocked instead of doing nothing.
"Transactions" is now called "Checks".
Fixed a crash when starting the ID document chip scan on iOS 27, and header and button styling on iOS 26 and later.
Now requires iOS 18 or later.
4.9.0 8 Sept
General bug fixes and interface improvements.
4.8.0 22 Jul
General bug fixes
4.7.6 16 Jun
Fix: Address search not returning results for South African users
Fix: Document uploads failing on slower mobile connections (10s → 120s timeout)
Fix: Long document-type labels overflowing the upload buttons
Fix: Keyboard hiding the bottom field on the Personal Details form
Fix: Headers rendering with the wrong bold weight in Lora
Fix: Form inputs not appearing above the keyboard when focused
4.7.5 26 May
- More reliable document uploads on patchy mobile networks (with retries and chunked transfer)
- Fixed cursor jumping in currency fields while typing
- Fixed reCAPTCHA v2 fallback during sign-in
- Fixed font weights rendering incorrectly in some screens
- Updated to React Native 0.85 with various stability improvements
4.7.4 29 Apr
Feat: Migrated to React Native New Architecture
Fix: Infinite loading screen during NFC ID journey (ReadID)
4.6.0 7 Apr
Fix: Country Selector UX
Fix: DOB validation
Fix: Descriptive Firebase Errors
Fix: Better errors for Document Upload
Fix: Zendesk Input Box Disappearing
Fix: DateField early validation
Chore: Added more conversation tags to the Zendesk SDK
4.5.8 20 Mar
Fix: ios printing error message
Fix: don't focus previous data input on clear
Fix: remove mortgage arranging section from intro
Feat: easier phone number entry
Fix: no validation in manual bank statements
Fix: combine multiple images into single PDF per document type
Feat: Evidence Later
4.5.6 6 Mar
Task: passport signature page upload
Task: add back navigation to giftor flow
Fix: combine sale of property status screens with conditional fields
Fix: remove redundant description from account selection
Fix: fix source review back navigation to return to source tally
Fix: fix double-subheading in account selection
Fix: Sale of Property back navigation not remembering values
Fix: reset document upload state when adding new entry
Fix: remove pence from whole currency amounts on review screens
Fix: add dedicated GIFTOR_RECIPIENT_REVIEW step type
Fix: include street in address display for manual entries
Fix: add back navigation to SoF skip confirmation screen
Fix: enable document editing from mortgage and sale of property review screens
Fix: default address search to UK
Fix: invalidate sources when transaction amount increases
Fix: fix SoF back navigation and task completion timing
Fix: remove mortgage offer as an evidence option
Fix: Gift details Edit from SoF review now opens review screen
Fix: save changes when editing "other" relationship in giftor flow
4.5.3 30 Jan
Chore: SDK upgrades (ReadID 4.121.0, Zendesk iOS 2.36.0, Onfido iOS 32.6.2, iProov 13.1.0/11.1.0) - includes iOS 26 compatibility fixes
Fix: Early validation on forms
Fix: SoF Sources Tally - empty white bar at the bottom when there are no sources
4.3.9 03/12/2025
Fix: First-time users unable to view transactions due to a Keychain race condition
Fix: Identity checks not opening after login
Fix: crash when navigating back to transactions list on iOS 26.1
4.3.6 25/11/2025
Feature: Optional Document Upload
Fix: Issue uploading PDFS with special characters in the name
Fix: bank list fixes and improvements.
Maintenance: Updates ZenDesk SDK to latest version
Fix: updated the app warning copy for data deletion
4.3.0 05/11/2025
Fixed document upload button being hidden after selecting a photo for address verification.
Fixed keychain race condition causing blank transaction lists after login - a frequently reported support issue.
4.2.0 29/10/2025
General performance enhancements and small fixes for a smoother experience.
4.1.0 09/10/2025
We've been working on under the cover improvements to support new features alongside fixing some bugs that prevented some users from being able to progress past specific points in some ID checks without closing and reopening the app.
4.0.0 02/10/2025
- Implemented some custom behaviour for specific partners
- Fixed some minor bugs
3.7.10 03/07/2025
Minor updates and bug fixes.
3.7.9 02/06/2025
Minor updates and bug fixes.
3.7.8 15/04/2025
Minor updates and bug fixes
3.7.7 11/02/2025
Minor updates and bug fixes
3.7.6 05/02/2025
Minor updates and bug fixes
3.7.5 24/01/2025
Minor updates and bug fixes
3.7.4 13/01/2025
Task: On the Right to Rent identity check, the "Are you sure you don’t have a passport?" screen now shows its options as radio buttons
Task: Buttons and links that begin a task on a check now read "Start" instead of "Begin"
more Version 4.11 5 days ago
Data Linked to You The following data may be collected and linked to your identity:
Data Not Linked to You The following data may be collected but it is not linked to your identity:
Supported Features
VoiceOver
Larger Text
Dark Interface