BoostUp vs Chaipang Subtraction
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BoostUp
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Boost Up is a comprehensive six-level English course that motivates learners to enhance their English proficiency with engaging CLIL-based learning content. Boost Up’s extensive lessons are carefully and systematically designed for young learners to develop 21st century skills and become successful global citizens in today’s world. The Boost Up app includes free audio tracks, videos and games in every unit.
Chaipang Subtraction
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1. Features and composition ▶ Increase the speed and accuracy of calculations “Chaipang Subtraction” is a game-based calculation learning app designed to improve children’s ‘subtraction’ skills. ▶ Increase the immersion level of children. “Chaipang Subtraction” is set in kindergarten and is played in the form of card games with friends so that children can feel immersed. ▶ Motivation to improve calculation skills All 50 characters you play with have different calculation skills. Your ranking changes according to the result of the game with each character. 2. How to enjoy Chaipang Subtraction with Chaipang friends! ① Let’s play subtraction games with card games! ② If you answer the correct answer first, you can get a star-shaped block! ③ The more blocks you have, the higher your ranking will be. ④ If you have the highest score, you can wear a crown! 3. Contact us If you have any questions, please contact us at the address below. Tel. +82-2-508-0710 Email. support@wecref.com Developer : wecref.dev@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: BoostUp at none against Chaipang Subtraction's 1. On price, update cadence, 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. Chaipang Subtraction sells 1 one-off in-app purchase. BoostUp asks for nothing beyond the download.
BoostUp ships an update every 4 months, Chaipang Subtraction every 3 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.
| Parameter | BoostUp | Chaipang Subtraction |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.2 — better | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 136 MB |
| Age rating | 4+ | 4+ |
| Developer | Epublic CO.,LTD | Wecref Co., Ltd. |
In-app purchases
BoostUp
No in-app purchases
Chaipang Subtraction
- 차이팡 뺄셈 광고제거$2.99
Questions
Is BoostUp free?
Is Chaipang Subtraction free?
Do BoostUp or Chaipang Subtraction have ads?
Which is updated more often, BoostUp or Chaipang Subtraction?
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