STA Volunteers vs UnDoubt
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
STA Volunteers
Read full descriptionHide full description
The easiest way to find volunteering opportunities and get involved in the Scottish Tech Army, using your tech talents for good. You can find charity projects across the UK - search by role, tech stack or the kind of cause you want to support. Put yourself forward for a project when you're ready.
UnDoubt
Read full descriptionHide full description
UnDoubt is a simple, person-first verification app built on secure cryptography. It helps you confirm who youβre really communicating with by verifying requests in real time, before risky actions are taken. Real-time Verification β¨Instantly authenticate who you are interacting with across voice, video, email or text. UnDoubt is your first line of defence against voice spoofing, AI impersonation, and online scams. Verify Before You Act β¨Verify requests in real time before sharing information, sending money, clicking a link, or granting access. Simple and Intuitive Designed for real people, not security experts. Setup takes minutes, verification takes seconds, and the app stays out of your way until you need it. Privacy First β¨Your personal information isnβt shared. Verifications happen privately without tracking or data harvesting. Grow Your Trusted Network See which contacts already use UnDoubt and verify them instantly. Invite others via a link when you need certainty, not assumptions. Free to Use UnDoubt is free to help protect you and the people who matter most. Optional premium features may be introduced later, but the core experience will always remain free. Terms of use: https://undoubt.co.uk/terms/ Privacy policy: https://undoubt.co.uk/privacy/
Screenshots
Verdict
The clearest difference is update cadence: UnDoubt at every 3 weeks against STA Volunteers's every 10 months. STA Volunteers's advantage is iOS requirement (13.4 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
STA Volunteers ships an update every 10 months, UnDoubt every 3 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | STA Volunteers | UnDoubt |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 months | Every 3 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 13.4 β better | 15.1 |
| Further details β not scored | ||
| Size | 29 MB | 85 MB |
| Age rating | 17+ | 4+ |
| Developer | Scottish Tech Army | LastingAsset LIMITED |
In-app purchases
STA Volunteers
No in-app purchases
UnDoubt
No in-app purchases
Questions
Is STA Volunteers free?
Is UnDoubt free?
Do STA Volunteers or UnDoubt have ads?
Which is updated more often, STA Volunteers or UnDoubt?
Other comparisons















