Comparison

Jeolmi vs Cat's Study

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

Head to head
About

Jeolmi

Read full description

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 · 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. · Stays on your Lock Screen and in the Dynamic Island while you focus. Done, Pause and +5 work without opening the app. · Says one dry line per state. It never coaches and never guilts. · 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. · 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 · 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 · Tasks: tap to check one off, or make it timed and see today's minutes on it. Today, tomorrow, weekday routines, subjects with colors · D-day: finals, SAT, ACT, custom dates, D+ after the day · Widgets: Home Screen and Lock Screen, with today's tasks, grapes and your D-day. Check tasks off right on the widget · Live Activity with the seal and your task, also in the Dynamic Island on iPhones that have one · 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 → 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

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 ▶ 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 Café 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

Jeolmi4 screens
Cat's Study4 screens

Verdict

The call

The clearest difference is ads: Jeolmi at none against Cat's Study's shown. Cat's Study's advantage is iOS requirement (16.6 vs 26.0). On price, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 4 level
Jeolmi versus Cat's Study: the parameters behind the verdict, then further details
ParameterJeolmiCat's Study
PriceFreeFree
Update frequencyEvery 6 days—
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS26.016.6 — better
Further details — not scored
Size37 MB140 MB
Age rating4+4+
DeveloperJaewook JungLo-Fi Labs Inc.

In-app purchases

None

Jeolmi

No in-app purchases

None

Cat's Study

No in-app purchases

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 no in-app purchases.
Do Jeolmi or Cat's Study have ads?
Cat's Study shows ads; Jeolmi does not.

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