Comparison

This One Thing vs OneTask ADHD Focus Timer

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

Head to head
About

This One Thing

Features
Read full description

The productivity problem you've never heard of: Every todo app shows you everything. Your brain sees the list and freezes. Psychologists call it "choice paralysis." We call it Tuesday. This One Thing: Single Task; ADHD Focus Todo Productivity solves the opposite problem: not how to organize your tasks, but how to hide them. Here's how it works: Add unlimited tasks (your brain needs to capture everything) See exactly ONE task at a time (your eyes need to focus on THIS ONE THING) Complete it to reveal the next (no peeking, no planning, no paralysis) Skip if you must (but it goes to the back of the line) What you won't find here: Priority levels (everything's a priority, which means nothing is) Due dates (artificial urgency is still anxiety) Categories (organizing is procrastinating with extra steps) Collaboration (focus is a solo sport) Gamification (you're not a rat in a maze) What you will find: One task. One screen. One decision. A timer that shows focus time (what you measure, you value) Statistics that matter (streak days, completion count) Design that looks expensive (because restraint is luxury) The behavioral economics: Rory Sutherland, vice chairman of Ogilvy, says the best solutions solve the problem backwards. Instead of "how do I get more done?" ask "what stops me from starting?" The answer: seeing everything stops you from doing anything. THIS ONE THING makes the limitation into the feature. You can't see task #2 until task #1 is done. Not because we're mean, but because your brain works better that way. Who this is for: People with 50+ tasks who complete zero Anyone who reorganizes their todo list instead of doing it Humans who overthink, overplan, and underexecute Those who know that "just start" works but can't make themselves start Who this isn't for: People who need to see the big picture (this app deliberately hides it) Teams (there's no sharing, no sync, no collaboration) Planners (there's no calendar, no projects, no someday/maybe) This app makes your life harder in exactly one way: you can't avoid the next task by looking at other tasks. No escaping into "planning." No comfort of "I'll do that other thing first." Just you and THIS. Every time. Most apps try to make work easier. This one makes avoidance harder. That's worth $4.99. Privacy: Your tasks live on your device. No account, no cloud, no tracking. We don't know what you're doing, and we don't want to. RESOURCES: โ€ข Privacy Policy: https://pragmathema.com/#this โ€ข Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OneTask ADHD Focus Timer

Features
Read full description

Stop juggling. Start finishing. OneTask is for ADHD brains with 47 tabs open and nothing done. No folders. No tags. No priority matrix. Just one task, a timer, and the satisfaction of actually getting something done. BRAIN DUMP - Get everything out of your head Type out every task weighing on you. No judgment, no organizing. Then pick ONE and start the timer. BUILT FOR ADHD MINDS - One task visible at a time (no overwhelming lists) - Timer that makes time feel real (time blindness? solved) - Streak tracking for dopamine hits - Brain dump to beat task paralysis - Mascot (Bit) cheers you on FREE FOREVER - 1 focus session per day, always free - 7-day full Pro trial, no payment needed PRO UNLOCKS - Unlimited sessions - Full history & insights - Streak freeze protection - Unlimited brain dumps Finally finish something today. You don't need another planner. You need to finish one thing today. OneTask is for people who are done planning and ready to execute. One task at a time. Subscription Pricing: - $4.99 / month - $29.99 / year Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of Use: https://www.apptodesign.com/onetask/terms/ Privacy Policy: https://www.apptodesign.com/onetask/privacy/ PRIVACY Your tasks stay on your device and in your iCloud. No ads. No tracking. No data selling. PHILOSOPHY Do less. Finish more.

Screenshots

This One Thing4 screens
OneTask ADHD Focus Timer4 screens

Verdict

The call

The clearest difference is price: OneTask ADHD Focus Timer at Free against This One Thing's $4.99. OneTask ADHD Focus Timer also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (18.6 vs 26.0). This One Thing's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

OneTask ADHD Focus Timer is free to download; This One Thing costs $4.99 up front. OneTask ADHD Focus Timer sells 2 in-app purchases, starting at $4.99 per month. This One Thing asks for nothing beyond the download.

UpkeepUpdate frequency

This One Thing ships an update every 6 weeks, OneTask ADHD Focus Timer weekly. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

Scorecard4 real differences ยท 2 level
This One Thing versus OneTask ADHD Focus Timer: the parameters behind the verdict, then further details
ParameterThis One ThingOneTask ADHD Focus Timer
Price$4.99Free โ€” better
Update frequencyEvery 6 weeksWeekly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS26.018.6 โ€” better
Further details โ€” not scored
Size1 MB15 MB
Age rating4+4+
DeveloperNikola KnezevicQUANTUMPARADOX STUDIO PRIVATE LIMITED

In-app purchases

None

This One Thing

No in-app purchases

2 purchases

OneTask ADHD Focus Timer

Subscriptions2
  • Monthly Focus ยท Gentle Focus Plan$4.991 Month
  • Yearly Focus ยท Gentle Focus Plan$29.991 Year

Questions

Is This One Thing free?
This One Thing costs $4.99, with no in-app purchases.
Is OneTask ADHD Focus Timer free?
OneTask ADHD Focus Timer is free to download, with in-app purchases available.
Do This One Thing or OneTask ADHD Focus Timer have ads?
Neither This One Thing nor OneTask ADHD Focus Timer shows ads.
Which is updated more often, This One Thing or OneTask ADHD Focus Timer?
This One Thing ships an update every 6 weeks, and OneTask ADHD Focus Timer weekly. Most recently, This One Thing was updated on October 1, 2026 and OneTask ADHD Focus Timer on October 2, 2026.

Other comparisons