Comparison

One Thing vs First Thingy

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

One Thing

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Make measurable progress every day by focusing on just one thing. β€’ Reduce overwhelm and finish what matters β€” one meaningful task a day moves you forward. β€’ Build unstoppable momentum β€” small daily wins add up into real change. β€’ Clear your mind β€” remove distractions and decision-fatigue so you can focus. β€’ Keep it private β€” what you add stays on your device, no syncing or sharing. How it works Set exactly one task for today. Commit to it, complete it, and mark it done β€” that's progress. One Thing tracks your streaks and weekly consistency so you can see momentum without clutter or complexity. Access it directly from home screen, no need to open the app and find the correct place. Who it’s for For entrepreneurs, creatives, minimalists, and anyone tired of endless to-do lists who wants a simple, reliable way to get meaningful work done daily. Start small. Finish big. Download One Thing and begin today. 100% privacy. What is added to the app, stays in the app. No content is ever synced or exported in any way. Development in Germany Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://alluring-caribou-3e8.notion.site/Privacy-Policy-316a0c6a3d8f8087912fecd13583d2b6

About

First Thingy

Features
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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 β€” 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 β€” 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: β€’ Set one active task at a time β€” enforced β€’ Abandoning requires a written explanation β€’ Permanent honest record of all your tasks β€’ Daily reminder at a time you choose β€’ Light and dark mode β€’ No account needed, no cloud sync, no tracking Your data stays on your device. Always.

Screenshots

One Thing4 screens
First Thingy4 screens

Verdict

The call

The clearest difference is in-app purchases: First Thingy at none against One Thing's 2. First Thingy also leads on iOS requirement (15.1 vs 26.2). On price, ads 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. One Thing sells 2 in-app purchases, starting at $0.99 per year. First Thingy asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
One Thing versus First Thingy: the parameters behind the verdict, then further details
ParameterOne ThingFirst Thingy
PriceFreeFree
Update frequencyEvery 5 weeksβ€”
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPod β€” better
Requires iOS26.215.1 β€” better
Further details β€” not scored
Size6 MB36 MB
Age rating4+4+
DeveloperStefan MattisANTON KENT GUNNAR KARLSSON

In-app purchases

2 purchases

One Thing

Subscriptions1
  • Yearly$0.991 Year
One-time1
  • Forever Pro$2.99
None

First Thingy

No in-app purchases

Questions

Is One Thing free?
One Thing is free to download, with in-app purchases available.
Is First Thingy free?
First Thingy is free to download, with no in-app purchases.
Do One Thing or First Thingy have ads?
Neither One Thing nor First Thingy shows ads.

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