promi$er vs First Thingy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
promi$er
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PROMI$ER: BE A PRO AT KEEPING PROMISES transform your commitments with this innovative todo app that harnesses the power of loss aversion - our natural tendency to fear losses more than we value gains. while the satisfaction of completing a task fades quickly, the prospect of losing something tangible keeps us laser-focused on our goals. HOW IT WORKS • set meaningful tasks and assign them monetary value • complete tasks on time and earn your achievements • only if you miss a deadline, you'll pay fine that you've set • build a proven track record of reliability the science is clear: we're twice as motivated to avoid losses as we are to achieve gains. promi$er uses this psychological principle to help you follow through on your promises. by attaching real value to each commitment, you'll think more carefully about what you promise and feel a stronger drive to achieve it. so... DO NOT PAY! be miser; own your promises. there are things money cannot buy. WHY YOU'LL SUCCEED • transform vague intentions into concrete commitments • stay accountable through meaningful stakes • build lasting self-trust and discipline • experience the satisfaction of consistent achievement • you will start to take your word seriously your promises have real value. promi$er helps you discover it by making each commitment count. start making promises you'll keep, stay motivated, and become the reliable achiever you've always wanted to be. remember: when you make a promise, you don't owe anybody anything - you only owe it to yourself. download now and experience the power of loss aversion working for you, not against you.
First Thingy
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Most productivity apps give you more ways to make longer lists. One Thing gives you one task. Set the one thing that matters most right now. Work on it. When you're done, mark it complete. If you give up, you have to say why — in your own words, saved permanently. That's it. Why only one task? Because you can only do one thing at a time anyway. The list is the lie. One Thing removes the lie. Why must you explain yourself? Because excuses are easy when no one is watching. One Thing is watching. Not to judge — to help you see the patterns you hide from yourself. The Honest Record Every task you've set, completed, or abandoned lives here. No editing. No deleting. Just the truth about how you spend your time and attention. Features: • Set one active task at a time — enforced • Abandoning requires a written explanation • Permanent honest record of all your tasks • Daily reminder at a time you choose • Light and dark mode • No account needed, no cloud sync, no tracking Your data stays on your device. Always.
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Verdict
The clearest difference is in-app purchases: First Thingy at none against promi$er's 5. First Thingy also leads on iOS requirement (15.1 vs 17.0). On price, ads 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. promi$er sells 5 one-off in-app purchases. First Thingy asks for nothing beyond the download.
| Parameter | promi$er | First Thingy |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Dongha Lee | ANTON KENT GUNNAR KARLSSON |
In-app purchases
promi$er
- very low fine$0.29
- low fine$0.99
- medium fine$7.99
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- high fine$29.99
- very high fine$99.99
First Thingy
No in-app purchases









