키우미 vs gemgem400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
키우미
Get personalized child development guidance and advice based on expert knowledge and real consultation data. Ask questions anytime to receive tailored solutions, play ideas, and parenting tips for your child's specific needs.
- Personalized development guidance
- Expert-based advice
- Real consultation data
- On-demand Q&A
- Play and parenting tips
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키우미는 서울대 아동학과 기반 전문 지식과 실제 상담 데이터를 바탕으로, 개인별 맞춤형 발달 가이드 및 상담을 제공합니다. 궁금한 순간마다 바로 질문하고 우리 아이에게 맞는 해결 방법과 놀이·양육 팁을 받아보세요.
gemgem400
Engaging rehabilitation games designed to help individuals with limited movement on one side of the body or those needing fine motor skill improvement. The app encourages daily voluntary movements to promote neuroplasticity and build confidence through playful activities.
- Playful rehabilitation games
- Fine motor skill improvement
- Encourages voluntary movements
- Promotes neuroplasticity
- Builds self-confidence
- Regularly updated content
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Enjoy Fun and Engaging Rehab Games at Home with Gemgem 400! ■ Who is it for? Our game is designed for individuals with limited movement on one side of the body or those who need fine motor rehabilitation. ■ Why “400”? Because performing 400 voluntary movements a day helps activate neuroplasticity in the brain, encouraging the formation of new neural pathways. ■ How effective is it? The key is quantity and autonomy! In other words, encouraging people to move more, on their own, is what really matters. In fact, both caregivers and developers were amazed at the changes experienced by users who consistently played GemGem 400. ■ What kinds of games are included? Jump, run, pop! We offer a variety of adventures that everyone can enjoy — with new content being added regularly. With the valuable feedback of caregivers, our service continues to improve every day. ■ Our goals are to: 1. Grow with joy through gaming 2. Build self-confidence 3. Support each person’s dreams for the future Gemgem 400 cheers on everyone who is reaching toward new possibilities! End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 키우미 at none against gemgem400's 5. 키우미 also leads on update cadence (every 3 days vs every 3 weeks). On price, rating, review sentiment and ratings volume 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. gemgem400 sells 5 in-app purchases, starting at $79.99 per month. 키우미 asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for 키우미 against 5.0 for gemgem400. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
키우미 ships an update every 3 days, gemgem400 every 3 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | 키우미 | gemgem400 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 89 MB | 276 MB |
| Age rating | 4+ | 4+ |
| Developer | 주식회사 솔리브벤처스(SOLIVE VENTURES) | Gemgem therapeutics Inc. |
Customer experience
키우미
gemgem400
In-app purchases
키우미
No in-app purchases
gemgem400
- 잼잼400 정기 구독(Silver)$79.991 Month
- 잼잼400 정기 구독(Gold)$99.991 Month
- 잼잼400 정기 구독 - BASIC$149.991 Month
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- 잼잼400 정기 구독 - SILVER$199.991 Month
- 잼잼400 정기 구독 - GOLD$389.991 Month
