protostar vs K3學中文 (寫字認字)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
protostar
This educational app is designed for students aged 7-12, offering a platform for watching learning videos and playing interactive games. It is exclusively for users of the protostar education company and is available on iPad.
- Learning videos
- Educational games
- Preview content
- Review content
- Designed for ages 7-12
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1. Applicable to students aged 7-12 to use the app 2. This application is only for protostar education company 3. The application is only for ipad 4. The application is suitable for IPv6 5. This is an application that allows children to watch learning videos online, play learning games, and wait for preview and review
K3學中文 (寫字認字)
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This learning App is divided into two parts, a learning chapter and a game chapter. There are 24 categories for learning, including face, body, family, color, shape, occupation, food, transportation, animals, nature, fruits, insects, stationery, clothing, places, sports, festivals, environmental protection, etc. Children learn the strokes, writing and pronunciation of related words. The game section tests the children’s ability to recognize words.
Screenshots
Verdict
The clearest difference is price: protostar at Free against K3學中文 (寫字認字)'s $7.99. protostar also leads on update cadence (every 3 weeks vs every 9 months). K3學中文 (寫字認字)'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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
protostar is free to download; K3學中文 (寫字認字) costs $7.99 up front. protostar sells 1 one-off in-app purchase. K3學中文 (寫字認字) asks for nothing beyond the download.
protostar ships an update every 3 weeks, K3學中文 (寫字認字) every 9 months. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.
| Parameter | protostar | K3學中文 (寫字認字) |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks — better | Every 9 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 10 | 9.0 — better |
| Further details — not scored | ||
| Size | 155 MB | 362 MB |
| Age rating | 4+ | 4+ |
| Developer | Longzhe Education Technology (Shanghai) Co., Ltd. | Yiu Ying Ching |
In-app purchases
protostar
- Protostar English Course$299.99
K3學中文 (寫字認字)
No in-app purchases
