Comparison

Main Arc vs Cat's Study

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

Head to head
About

Main Arc

Features
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Your main character era starts today. Main Arc turns the Winter Arc trend into a plan you can actually keep: pick 3 daily rules, keep them every day until New Year (or for 30, 66 or 100 days), and watch every kept day light up your arc. HOW IT WORKS โ€ข Pick an arc: Winter Arc, Glow-Up, Gym Arc, Monk Mode, Study Arc, Sober Arc, Money Arc, Morning Arc, Diet Arc โ€” or write your own โ€ข Start with ready-made rules and change them any way you like โ€ข Tick today's rules โ€” when all are done, the day counts โ€ข Forgot to tick? Fix yesterday until midnight โ€ข Shields save your streak when life happens โ€” earn one every 7 kept days โ€ข 7 ranks you keep for good: Rookie, Committed, Focused, Unstoppable, Elite, Main Character, Legend ALWAYS IN VIEW โ€ข Lock Screen countdown to midnight โ€” tick rules without opening the app โ€ข Home Screen widgets with tick buttons, your arc and every day of it โ€ข One evening nudge, only if today isn't done SHOW YOUR PROGRESS โ€ข Story cards for Instagram and TikTok โ€ข Recap video: your arc filling up, day by day โ€ข A progress photo a day, turned into a before-and-after time-lapse MAIN ARC PRO Free includes an arc with up to 3 rules, widgets, the Lock Screen countdown, shields, ranks and story cards. Pro adds up to 5 rules, rules that tick themselves from Apple Health (steps, workouts, sleep and mindful minutes), progress photos with a time-lapse and the recap video โ€” as a monthly plan or a one-time purchase. The monthly plan renews automatically unless cancelled at least 24 hours before the end of the period; manage it in your Apple ID settings. Prices may vary by region. PRIVATE BY DESIGN No account, no ads, no tracking. Rules sync through your private iCloud; Apple Health data and progress photos never leave your iPhone. HabitMint is now Main Arc โ€” your habits, history and Pro came with you. Privacy Policy: https://ios.service-lab.site/mainarc/privacy Terms of Use: https://ios.service-lab.site/mainarc/terms

About

Cat's Study

Features
Read full description

Cat's Study is a study timer where you focus alongside a cat. Start a task and the cat in the room opens its book too. It rests when you rest and dozes off when you're done. Homework, exams, deep work or reading: it all feels a little less lonely with company. FOCUS TIMER - Stopwatch or Pomodoro, with focus and break lengths set to the minute. - Get notified when it's time to focus or take a break. - Leave the screen alone while you focus and the room dims, with only the timer showing. Handy on a desk stand. TASK PLANNER - Tap โ–ถ next to any of today's tasks to start right away. - Sort tasks into categories like Study or Work, and set daily ones to repeat. - Can't decide? Tap "Just start" and the cat comes up with a task for you. STUDY TRACKER - Daily, weekly and monthly focus time, broken down by category. - Focus 5+ minutes in one go each day to build a streak. - Share your records as an image. ROOM AND SOUNDS - Play rain sounds, thunder, library ambience or lofi music on the turntable, even with the screen off. - Eight room themes, including Cafรฉ in the Rain, Cherry Blossom Study and Spaceship Study. - Earn coins from check-ins, focus sessions and streaks to dress up your cat and its room. NO PRESSURE - Start without signing in, or sign in to keep your records on any device. - Every feature is free, with no in-app purchases. No ads while you focus. - Dark mode supported.

Screenshots

Main Arc4 screens
Cat's Study4 screens

Verdict

The call

The clearest difference is in-app purchases: Cat's Study at none against Main Arc's 3. Main Arc's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Main Arc sells 3 in-app purchases, starting at $3.99 per 7 days. Cat's Study asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Main Arc versus Cat's Study: the parameters behind the verdict, then further details
ParameterMain ArcCat's Study
PriceFreeFree
Update frequencyEvery 4 daysโ€”
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.016.6 โ€” better
Further details โ€” not scored
Size10 MB140 MB
Age rating4+4+
DeveloperDenys KhomenkoLo-Fi Labs Inc.

In-app purchases

3 purchases

Main Arc

Subscriptions2
  • HabitMint Pro Weekly$3.997 Days
  • HabitMint Pro Yearly3 Days trial$24.991 Year
One-time1
  • HabitMint Pro Lifetime$49.99
None

Cat's Study

No in-app purchases

Questions

Is Main Arc free?
Main Arc is free to download, with in-app purchases available.
Is Cat's Study free?
Cat's Study is free to download, with no in-app purchases.
Do Main Arc or Cat's Study have ads?
Cat's Study shows ads; Main Arc does not.

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