OTL vs GriDot
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
OTL
Easily search for all courses, view your daily schedule at a glance, and get notified about important academic dates. Organize your next semester's timetable, compare various metrics, and read and rate course reviews.
- Course search and filtering
- Daily schedule overview
- Academic event notifications
- Timetable creation and comparison
- Course review reading and rating
- Personalized academic information
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1. ํ - ๋ชจ๋ ๊ณผ๋ชฉ์ ๋ฐ๋ก ๊ฒ์ํ์ธ์. - ์ค๋ ๋์ ์๊ฐํ๋ฅผ ํ ๋์ ํ์ธํ์ธ์. - ์๊ฐ์ ์ฒญ, ์๊ฐ๋ณ๊ฒฝ, ๊ฐ๊ฐ, ์ข ๊ฐ ๋ฑ ์ฃผ์ ์ผ์ ์ ์๋ ค๋๋ฆฝ๋๋ค. 2. ์๊ฐํ - ์ด๋ฒ ํ๊ธฐ ๋์ ์๊ฐํ๋ฅผ ํ์ธํ๊ณ ์ฌ์ง์ผ๋ก ์ ์ฅํ์ธ์. - ์ผ๋ฐ, ์ํ, ์ง๋์ 3๊ฐ์ง ๋ชจ๋๋ก ์๊ฐํ๋ฅผ ํ์ธํ์ธ์. - ๋ค์ ํ๊ธฐ ์๊ฐํ๋ฅผ ๊ตฌ์ฑํด ๋ณด๊ณ ํ์ , AU, ์ฑ์ , ๋๋, ๊ฐ์ ๋ฑ ๋ค์ํ ์งํ๋ฅผ ๋น๊ตํ์ธ์. 3. ๊ณผ๋ชฉ์ฌ์ - KAIST์ ๋ชจ๋ ๊ณผ๋ชฉ์ ๊ฒ์ํ์ธ์. - ํ๊ณผ, ๊ตฌ๋ถ, ํ๋ , ๊ธฐ๊ฐ์ผ๋ก ์์ฝ๊ฒ ํํฐ๋งํ์ธ์. 4. ๊ณผ๋ชฉํ๊ธฐ - ์ต๊ทผ ์์ฑ๋ ๋ฐ๋๋ฐ๋ํ ๊ณผ๋ชฉํ๊ธฐ๋ฅผ ์ฝ์ด๋ณด์ธ์. - ๋ช ์์ ์ ๋น์ ์ค๋ฅธ ๊ณผ๋ชฉํ๊ธฐ๋ค์ ํ๊ธฐ๋ณ๋ก ํ์ธํด ๋ณด์ธ์. - ์ ์ฉํ๊ณ ์ฌ๋ฏธ์๋ ๊ณผ๋ชฉํ๊ธฐ์ ์ข์์๋ฅผ ๋๋ฌ์ฃผ์ธ์. ๋ด ์ ๋ณด์์ ํ๊ธฐ๋ณ ์๊ฐํ ๊ณผ๋ชฉ, ์ข์์๋ฅผ ๋๋ฅธ ํ๊ธฐ๋ค ๋ฑ์ ํ์ธํ ์ ์์ต๋๋ค. ๋ฌธ์์ฌํญ & ํผ๋๋ฐฑ otlplus@sparcs.org
GriDot
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App features: โข paper style > choose from grid, horizontal line, vertical line, dotted or none. โข customisable paper size. โข customisable paper colour. โข customisable paper padding. โข customisable cell size. โข customisable border colour. โข customisable border colour. โข light theme / dark theme. โข left mode / right mode. โข re-create the file using history. โข ready made template Supported languages (language is based on the your IPad's language setting): โข Chinese โข Englishย โข Japaneseย โข Korean For terms of use, please refer to Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: OTL at Free against GriDot's $2.99. OTL also leads on in-app purchases (none vs 2) and device support (3 vs 1). GriDot's advantage is iOS requirement (13.0 vs 15.0). On update cadence and ads 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
OTL is free to download; GriDot costs $2.99 up front. GriDot sells 2 in-app purchases, starting at $0.99 per month. OTL asks for nothing beyond the download.
OTL ships an update every 5 weeks, GriDot monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | OTL | GriDot |
|---|---|---|
| Price | Free โ better | $2.99 |
| Positive reviews | 92.9% of reviews | โ |
| Update frequency | Every 5 weeks | Monthly โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod โ better | iPad |
| Requires iOS | 15.0 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 115 MB | 13 MB |
| Age rating | 9+ | 4+ |
| Developer | SPARCS | Ming Rong Ng |
In-app purchases
OTL
No in-app purchases
GriDot
- Monthly Subscription$0.991 Month
- Yearly$4.491 Year









