Comparison

Jeolmi 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

Jeolmi

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Jeolmi is a focus timer and to-do list with a small paper seal that copies whatever you write. Type "read chapter 4" and the seal picks up a book. Type "pay rent" and it brings a wallet (empty, it apologizes). Tap start, lock your phone, and the seal is on your Lock Screen and in the Dynamic Island, holding the prop next to your task while the timer runs. Every real 25 minutes of focus inks one grape on today's bunch. Checked-off tasks add grapes too, drawn dotted so you can tell them apart. Fill the day's grape slots and the seal sits up and claps. Once a day. What the seal does ยท Copies your task with a paper prop, live as you type. There are 32 props to find, and the ones you find stay on your prop shelf. ยท Stays on your Lock Screen and in the Dynamic Island while you focus. Done, Pause and +5 work without opening the app. ยท Says one dry line per state. It never coaches and never guilts. ยท Wears what you give it: outfits, body colors, a four-slot desk. Outfits, desk items and two of the body colors cost Jelly, which you earn by focusing and finishing tasks. Nothing is random. ยท Goes for a swim once today's grapes are filled and comes back with one line. If you take a few days off, it folds you a paper crane. It never counts the days you missed. Everything below is free ยท Timer: count up with no cap, a 25-minute countdown, or any length from 5 to 240 minutes. Keeps running if the app is closed ยท Tasks: tap to check one off, or make it timed and see today's minutes on it. Today, tomorrow, weekday routines, subjects with colors ยท D-day: finals, SAT, ACT, custom dates, D+ after the day ยท Widgets: Home Screen and Lock Screen, with today's tasks, grapes and your D-day. Check tasks off right on the widget ยท Live Activity with the seal and your task, also in the Dynamic Island on iPhones that have one ยท Stats: a month of grapes, hours per subject, days showed up, lifetime hours Share, if you want A card of today's grapes, a mirror card with your task and the prop, a transparent sticker of your seal for notes apps and Stories, and a three-second clip of the flop or the clap. Nothing is posted anywhere by itself. Quiet by design One note a day at most, in the seal's voice, at a time you pick (8 p.m. unless you change it). A heads-up when a countdown ends. Quiet Mode is one tap. Days showed up are counted, never used against you: two freezes refill on their own, and no message ever says something is at risk. Stays on your phone Everything stays on your phone. There is no sign-up and no email, and your tasks and records never leave the device unless you share a card yourself. The app sends only anonymous usage statistics, never what you write, to help improve it. Your records are part of your iPhone's own backup (iCloud Backup or a computer backup), so restoring or moving to a new iPhone brings them along. In English, Korean and Japanese: it follows your iPhone, and you can switch any time in Settings โ†’ Language. Jeolmi is a spotted seal pup named after injeolmi, the Korean rice cake it resembles. It insists it is a seal, not a sea lion. This matters to it.

About

Cat's Study

Enhance your focus with a charming virtual cat companion. This app offers customizable Pomodoro timers, task planning, and progress tracking. Personalize your study space with various themes and ambient sounds, and connect with friends for shared focus sessions.

Highlights
  • Customizable Pomodoro and stopwatch timers
  • Task planning and scheduling
  • Focus time tracking and streaks
  • Ambient soundscapes and room themes
  • Virtual cat companion
  • Social focus crews
Features
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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. - Ten 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. FRIENDS AND CREWS - Visit a friend's room and see how long they've focused today. - Start a crew and everyone's cats gather in one room, showing who's focusing now and this week's check-ins. Focus together, no chat needed. - Sign in to use friends and crews. NO PRESSURE - Start without signing in, or sign in to keep your records on any device. - Dark mode supported. Terms of Service: https://catsstudy.com/en/terms/ Privacy Policy: https://catsstudy.com/en/privacy/

Screenshots

Jeolmi4 screens
Cat's Study4 screens

Verdict

The call

The clearest difference is in-app purchases: Jeolmi at none against Cat's Study's 6. Jeolmi also leads on ads (none vs shown). Cat's Study's advantage is iOS requirement (16.6 vs 26.0). On price, update cadence 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. Cat's Study sells 6 in-app purchases, starting at $2.49 per month. Jeolmi asks for nothing beyond the download.

UpkeepUpdate frequency

Jeolmi ships an update weekly, Cat's Study every 4 days. The most recent releases landed on October 29, 2026 and November 6, 2026 respectively.

Scorecard3 real differences ยท 5 level
Jeolmi versus Cat's Study: the parameters behind the verdict, then further details
ParameterJeolmiCat's Study
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyWeeklyEvery 4 days โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
Monetizationโ€”Free with in-app purchases
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS26.016.6 โ€” better
Further details โ€” not scored
Size37 MB199 MB
Age rating4+4+
DeveloperJaewook JungLo-Fi Labs Inc.

In-app purchases

None

Jeolmi

No in-app purchases

6 purchases

Cat's Study

Subscriptions2
  • Cat's Study Pro Monthly$2.491 Month
  • Cat's Study Pro Annual7 Days trial$14.491 Year
One-time4
  • 100 Coins$1.49
  • 500 Coins$6.49
  • 1,000 Coins$9.99
Show 1 more
  • Cat's Study Pro Lifetime$33.49

Questions

Is Jeolmi free?
Jeolmi is free to download, with no in-app purchases.
Is Cat's Study free?
Cat's Study is free to download, with in-app purchases available.
Do Jeolmi or Cat's Study have ads?
Cat's Study shows ads; Jeolmi does not.
Which is updated more often, Jeolmi or Cat's Study?
Jeolmi ships an update weekly, and Cat's Study every 4 days. Most recently, Jeolmi was updated on October 29, 2026 and Cat's Study on November 6, 2026.

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