공책 vs Mallangi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
공책
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Write a diary every day, and your teacher writes back in red pen.Remember those short notes your teacher used to leave in your childhood diary?Gongchaek brings that warm experience back to life as a picture diary app. Record your day in words and drawings, and the next morning, your teacher's reply will be waiting for you.Key Features Daily Diary — Capture your day with writing and hand-drawn sketches Teacher's Reply — A red-pen response arrives every morning at 10 AM Mood & Weather — Log how you felt and what the weather was like Calendar View — See all your diary entries at a glance Easy Sharing — Share your favorite entries as images Write each night, read your teacher's reply each morning. Small habits become precious memories.
Mallangi
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Mallangi is a soft digital touch toy for small quiet moments. Tap, drag, stretch, and customize a playful Mallangi character with simple colors and types. The app is designed to be lightweight and easy to use whenever you want a tiny tactile pause on your phone. Features: • Touch and stretch a soft Mallangi character • Choose different Mallangi types • Customize colors and keep them for each type • Simple sound and haptic feedback • No accounts, ads, or cross-app tracking
Screenshots
Verdict
The clearest difference is update cadence: 공책 at every 10 days against Mallangi's monthly. 공책 also leads on iOS requirement (15.1 vs 18.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
공책 ships an update every 10 days, Mallangi monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | 공책 | Mallangi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 79 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | SAHWI KIM | Doyoon Lee |
In-app purchases
공책
No in-app purchases
Mallangi
No in-app purchases









