Review · Casual · Android · iOS
4=10
Reviewed: 01 Jun 2026
Android · iOS
Sveinn Steinarsson · 2022
Ludograph rating
Growth (BDS)
31
Risk (RIS)
0
Daily limit
120min
Age guidance
10+
Developmental benefits
| B1 | Cognitive | 0.58 | |
| B2 | Social-emotional | 0.00 | |
| B3 | Motor | 0.10 | |
4=10 is an excellent educational puzzle game that significantly enhances cognitive skills, particularly problem-solving, critical thinking, and mathematical proficiency. Its adaptive difficulty ensures continuous learning and challenge, making it suitable for all ages. The game's calming design promotes a relaxed learning environment.
Design risks
| R1 | Compulsion-loop pressure | 0.00 | |
| R2 | Monetization | 0.00 | |
| R3 | Social risk | 0.00 | |
This game presents virtually no risks. It lacks any manipulative design mechanics, monetization pressures, or social risks. Content is entirely benign, focusing purely on numerical puzzles.
Content (not in risk score)
| R4.1 | Violence Level | 0.00 | |
| R4.2 | Sexual Content | 0.00 | |
| R4.3 | Language | 0.00 | |
| R4.4 | Substance References | 0.00 | |
| R4.5 | Fear / Horror | 0.00 | |
Content risk is displayed separately and does not affect the time recommendation.
Regulatory design checks · DSA — Assessed: meets criteria·GDPR-K — Assessed: meets criteria·ODDS — Assessed: meets criteria
- DSA:What Ludograph checks: whether the game's design gives minors the transparency the EU Digital Services Act expects: plain terms, honest defaults, and clear reporting routes.: Estimated from review data. No dark pattern or child-targeting concerns found.
- GDPR-K:What Ludograph checks: whether age assurance and consent flows are designed for under-16s, in the spirit of GDPR Article 8.: Estimated from review data. No privacy or child-targeting concerns found.
- ODDS:What Ludograph checks: whether paid random-reward drop rates are disclosed, as required in China, Japan and South Korea.: Estimated from review data. No paid random-reward mechanics found, so drop-rate disclosure requirements do not apply.
These reflect Ludograph's assessment of the game's design practices against each framework's criteria, not a legal compliance determination.