点字学習Lite vs Derivon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
点字学習Lite
Learn braille characters for Japanese kana, numbers, and special sounds. Features include audio playback and randomized quizzes to test your knowledge. Designed for educational purposes.
- Learn kana braille
- Learn numbers braille
- Learn special sound braille
- Audio playback
- Randomized quizzes
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かな50音、数字、特殊音の点字を学習できます 音声読上げ機能つきです ランダムに問題を出題することもできます
Derivon
Master calculus concepts like derivatives and integrals through daily, intuitive practice. Earn rewards, collect planets, and build streaks as you progress through challenges. Designed for quick, effective learning sessions.
- Daily calculus problem practice
- Earn Star Sand rewards
- Collect planets in Gallery
- Build and maintain daily streaks
- Rank-Up Challenges
- Shooting mode for breaks
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Master calculus through daily practice. Solve derivatives and integrals by intuition — no overthinking, just repetition. • Swipe through problems and build your skills • Earn Star Sand with every correct answer • Spin the Gacha to collect planets in your Gallery • Build a daily streak — never break the chain • Take Rank-Up Challenges as you progress • Play Shooting mode for a quick break • Track your streak, level up, and earn rewards Whether you're preparing for AP Calculus, university exams, or just sharpening your math skills, Derivon makes practice feel like a space adventure. 3 minutes a day. That's all it takes. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: 点字学習Lite at 38% against Derivon's 0%. 点字学習Lite also leads on in-app purchases (none vs 3) and iOS requirement (11.0 vs 26.0). Derivon's advantage is update cadence (every 2 days vs every 3 months). On price, ads 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. Derivon sells 3 one-off in-app purchases. 点字学習Lite asks for nothing beyond the download.
点字学習Lite ships an update every 3 months, Derivon every 2 days. The most recent releases landed on September 18, 2026 and September 19, 2026 respectively.
| Parameter | 点字学習Lite | Derivon |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Positive reviews | 37.5% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 13 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Kawakami | RYOMA MIZUTANI |
Customer experience
点字学習Lite
Derivon
In-app purchases
点字学習Lite
No in-app purchases
Derivon
- 5 Star Fragments$0.99
- 12 Star Fragments$1.99
- 32 Star Fragments$3.99
