Review · Educational · Web
HarryRabby Elementary Math - Adding and Subtracting Four Numbers
Reviewed: 10 May 2026
Web
fingertainment · 2019
Ludograph rating
D
Caution
44 /100
HarryRabby Elementary Math - Adding and Subtracting Four Numbers is an educational game that helps children develop foundational math skills and problem solving.
Growth (BDS)
28
Risk (RIS)
0
Daily limit
120min
Age guidance
–
Developmental benefits
| B1 | Cognitive | 0.38 | |
| B2 | Social-emotional | 0.00 | |
| B3 | Motor | 0.45 | |
HarryRabby Elementary Math helps children develop foundational math skills (addition and subtraction) through engaging and accessible gameplay. The adaptive challenge and various accessibility options ensure that a wide range of learners can benefit, particularly those new to digital games or with low vision. It reinforces memory and attention through quick problem-solving.
Design risks
| R1 | Compulsion-loop pressure | 0.00 | |
| R2 | Monetization | 0.00 | |
| R3 | Social risk | 0.00 | |
This game presents minimal risks. Its focus on educational content and lack of monetization or social features means there are no significant concerns regarding compulsion-loop design, financial exploitation, or social harms. The content is benign.
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.