TeXmemo vs Calculus Gacha！
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TeXmemo
This simple note-taking app allows users to beautifully tweet text containing mathematical formulas. It automatically adds margins for clear visibility of equations on timelines.
- Tweet text with math formulas
- Automatic margin addition
- Clear equation display on timelines
- Simple note-taking interface
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数式の入った文章を綺麗にツイートできる、シンプルなメモアプリです。 ツイートするときに自動的に余白が追加されるので、タイムライン上でも見やすい数式のツイートができます。
Calculus Gacha！
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● Fun, Gacha-Style Learning Tackle randomly selected questions and instantly check explanations and formulas as you go. ●AI Tutor Stuck on a problem? Ask the built-in AI tutor for a hint, a solving strategy, just the first step, or an explanation using a simpler similar problem — all tailored to the question you're working on. ● Learn by Topic Integration, limits, factorization, indeterminate equations, recurrence relations, differential equations, and more. Each topic is organized into categories so you can focus on exactly what you want to study. ● Helpful Support Features Hints, scratch paper, a timer, and other tools make learning smoother and more efficient. ● Automatic Study Tracking All solved questions are saved on your device, allowing you to review your progress and understanding anytime. ● Smart Question Selection Based on your learning history, the app prioritizes topics you struggle with, helping you learn more efficiently. --------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.notion.so/calculus-gacha-joy-math-27ae4f0afd3b80cb9754ce138cbc80ca?source=copy_link
Screenshots
Verdict
The clearest difference is in-app purchases: TeXmemo at none against Calculus Gacha！'s 4. TeXmemo also leads on update cadence (daily vs every 3 days). Calculus Gacha！'s advantage is ads (none vs shown). On price, device support and iOS requirement 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. Calculus Gacha！ sells 4 one-off in-app purchases. TeXmemo asks for nothing beyond the download.
TeXmemo ships an update daily, Calculus Gacha！ every 3 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | TeXmemo | Calculus Gacha！ |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Daily — better | Every 3 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Joonha Kwon | Shunsuke Nakamura |
In-app purchases
TeXmemo
No in-app purchases
Calculus Gacha！
- 不定方程式ガチャ利用オプション$0.99
- AI Tutor Pass$2.99
- AI Tutor Plus(500)$2.99
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- 履歴管理機能オプション$2.99
