Comparison

3 Things a Day vs SubAtomic

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

Head to head
About

3 Things a Day

Features
Read full description

Your to-do list is making you anxious. The modern task manager is a trap. It is an infinite scroll of guilt. You add 20 items, you complete 5, and you go to bed feeling like a failure. You aren't productive; you are just busy. 3 Things is not a place to dump your brain. It is a tool to sharpen it. We built this app on a simple, brutal truth: You cannot do everything. But you can do the 3 most important things. This is your daily contract with yourself. THE PHILOSOPHY This app is based on the Ivy Lee Method and the principles of Essentialism. It forces you to make a choice. If everything is a priority, nothing is. By limiting your day to just 3 slots, you are forced to separate the "busy work" from your "life's work." HOW IT WORKS โ€ข Plan: Every morning, define your 3 non-negotiables. โ€ข Focus:Work on these tasks single-mindedly. โ€ข Execute: Check them off to get the dopamine hit. โ€ข Repeat: Build a streak of days where you actually finish. WHY "LIMITS" ARE A FEATURE Today shows three slots. There is no fourth slot. For a new set of three, finish these three and start a new day, or reset today. This is not a bug; it is the point. Limitations create freedom. By blocking the noise, we help you focus on the signal. STOP MANAGING. START FINISHING. Ditch the complex tools. Stop hoarding tasks you will never do. Download 3 Things. Choose your focus. Win the day. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SubAtomic

Features
Read full description

SubAtomic is a habit tracker that provides delightful animations that let you celebrate building habits in your own style It features a beautiful well designed interface, with ability to add unlimited habits, and customize the animations and color of each of them. You can also rearrange in order to prioritize the most important habits up top. After some time, you can look at your year, and see the progression you have gained, all in a fun circular calendar dial. One payment unlocks all six animations, every app color, and sync across your devices. We hope you enjoy the experience, and build habits that enrich your life. Terms of use: https://www.sinasamaki.com/subatomic-terms-of-use/ Privacy policy: https://www.sinasamaki.com/subatomic-privacy/

Screenshots

3 Things a Day4 screens
SubAtomic4 screens

Verdict

The call

The clearest difference is update cadence: SubAtomic at every 3 days against 3 Things a Day's weekly. 3 Things a Day's advantage is iOS requirement (15.0 vs 18.2). On price, ads, in-app purchases 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

Both are free to download. 3 Things a Day sells 2 in-app purchases, starting at $4.99 per month and SubAtomic sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

3 Things a Day ships an update weekly, SubAtomic every 3 days. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard2 real differences ยท 4 level
3 Things a Day versus SubAtomic: the parameters behind the verdict, then further details
Parameter3 Things a DaySubAtomic
PriceFreeFree
Update frequencyWeeklyEvery 3 days โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 โ€” better18.2
Further details โ€” not scored
Size92 MB74 MB
Age rating4+4+
DeveloperCWTI Ltdsinasamaki

In-app purchases

2 purchases

3 Things a Day

Subscriptions2
  • Monthly7 Days trial$4.991 Month
  • Yearly7 Days trial$24.991 Year
3 purchases

SubAtomic

Subscriptions2
  • SubAtomic Pro$1.991 Month
  • SubAtomic Pro - Yearly$19.991 Year
One-time1
  • SubAtomic Pro: One-time purchase$8.99

Questions

Is 3 Things a Day free?
3 Things a Day is free to download, with in-app purchases available.
Is SubAtomic free?
SubAtomic is free to download, with in-app purchases available.
Do 3 Things a Day or SubAtomic have ads?
Neither 3 Things a Day nor SubAtomic shows ads.
Which is updated more often, 3 Things a Day or SubAtomic?
3 Things a Day ships an update weekly, and SubAtomic every 3 days. Most recently, 3 Things a Day was updated on October 20, 2026 and SubAtomic on October 24, 2026.

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