Comparison

Pomodoro Study vs Kairos

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

Head to head
About

Pomodoro Study

Features
Read full description

A calmer take on the pomodoro technique: real blocks, real breaks โ€” and the next block is always your choice. Calibrate is built for the moment before you begin. The task is big, the hour is open, and starting is the hard part. So you don't start with 25 minutes. You start with three. JUST START Swipe any to-do and you're in โ€” three minutes with it, that's the whole deal. At the checkpoint, you decide: another block, a break, or stop here. Stopping counts. You started. REAL BLOCKS, REAL BREAKS Work in blocks that end with one honest question โ€” how did it go? Breaks get their own clock, and coming back is a choice too. Nothing auto-starts. Nothing runs you. YOUR LOCK SCREEN DOES THE WORK The whole session lives on your Lock Screen and Apple Watch โ€” the countdown, the check-ins, the next-block choice. Your phone stays locked. You never have to open the app. EMPTY YOUR HEAD FIRST Brain-dump every loose thing into one list for today. Spaces keep work, home and health apart, so today stays short. Every to-do gets a day โ€” or waits, without nagging you. AN HONEST WEEK, NOT A SCORE The weekly recap shows what actually happened โ€” facts, never grades. No streaks, no scores. Miss a day, nothing breaks. WHO IT'S FOR Students in long study sessions. ADHD brains โ€” the app never punishes a wandered mind, it just asks kindly. Anyone who's tried blockers and streak apps and wants something gentler. Calibrate helps you notice. It never notices for you. Focus sessions, to-dos, spaces, lists and keeping track are free โ€” all of it, unlimited. Calibrate Plus adds the long view: your weekly recap, your sharpest hours, and every day you turned up. Monthly, or one purchase that's yours for good. Privacy policy: https://usecalibrate.app/privacy.html Terms of use: https://usecalibrate.app/terms.html

About

Kairos

Features
Read full description

A minimalist focus timer that turns your work sessions into something you can see. Pick your goal, set a timer, and start. Every focus session becomes a colored ball that floats and bounces around your screen โ€” sized by how long you worked, colored by what you worked on. Your week, at a glance. FEATURES โ€ข Focus Timer โ€” Set your session duration and hit Start Focus. Simple, distraction-free. โ€ข Session Visualization โ€” Physics-based balls fill your screen as you build momentum through the week. Tilt your phone to watch them move. โ€ข Calendar View โ€” See every session laid out by time of day on a weekly calendar. Spot patterns, find gaps. (Pro) โ€ข Statistics โ€” Track today's focus, this week's total, your current streak, and your daily average. โ€ข Peak Hours โ€” Discover when you focus best throughout the day. โ€ข Weekly Summary โ€” A full breakdown of your week's effort. โ€ข Habit Tracking โ€” Assign colors to each habit or project so your sessions are easy to tell apart. โ€ข Dark Mode โ€” Works beautifully in light and dark. โ€ข Widget Support โ€” Check your stats right from your home screen. โ€ข Haptic Feedback โ€” Feel every ball collision when sessions overlap. KAIROS PRO Unlock Calendar View, Peak Hours, Weekly Summary, and more with a Kairos Pro subscription. See your full focus history and understand your patterns deeply. Focus isn't about grinding harder โ€” it's about knowing yourself. Kairos helps you do that. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Pomodoro Study4 screens
Kairos4 screens

Verdict

The call

The clearest difference is update cadence: Pomodoro Study at every 8 days against Kairos's every 2 weeks. 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. Pomodoro Study sells 3 in-app purchases, starting at $9.99 per month and Kairos sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pomodoro Study ships an update every 8 days, Kairos every 2 weeks. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.

Scorecard1 real difference ยท 5 level
Pomodoro Study versus Kairos: the parameters behind the verdict, then further details
ParameterPomodoro StudyKairos
PriceFreeFree
Update frequencyEvery 8 days โ€” betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.017
Further details โ€” not scored
Size41 MB73 MB
Age rating9+4+
DeveloperMujaheth MohammadCyrus Canape

In-app purchases

3 purchases

Pomodoro Study

Subscriptions2
  • Calibrate Plus Monthly$9.991 Month
  • Calibrate Plus Yearly$39.991 Year
One-time1
  • Lifetime Access$79.99
2 purchases

Kairos

Subscriptions2
  • Kairos Pro Monthly3 Days trial$5.991 Month
  • Kairos Pro Annual7 Days trial$59.991 Year

Questions

Is Pomodoro Study free?
Pomodoro Study is free to download, with in-app purchases available.
Is Kairos free?
Kairos is free to download, with in-app purchases available.
Do Pomodoro Study or Kairos have ads?
Neither Pomodoro Study nor Kairos shows ads.
Which is updated more often, Pomodoro Study or Kairos?
Pomodoro Study ships an update every 8 days, and Kairos every 2 weeks. Most recently, Pomodoro Study was updated on October 12, 2026 and Kairos on October 19, 2026.

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