AppMarketSpy › Utilities › Chess Rating Calculator: Elo
—average rating
0ratings
+0new ratings, last 7 days
—not in top charts now
🔒 Rating history23 days of daily rating and rating countGet Pro access
App info
- Developer
- YUSUF OCAL
- Category
- Utilities, Sports
- Released
- Sep 7, 2026
- Version
- 1.0 (Sep 8, 2026)
- Price
- Free
- Size
- 10.8 MB
- Requires
- iOS 17.0
- Age rating
- 4+
- Languages
- English, Albanian, Arabic, Basque, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, Galician, German, Greek,…
In-app purchases
| Chess Rating Pro Lifetime | $19.99 |
| Chess Rating Pro Weekly | $3.99 |
| Chess Rating Pro Monthly | $7.99 |
| Chess Rating Pro Yearly | $14.99 |
Current prices, App Store US.
🔒 Price history2 snapshots: when prices changed and new plans appearedGet Pro access
About Chess Rating Calculator: Elo
Your rating is a number you only ever hear about second-hand — weeks after the tournament, when the list is finally published. This app gives it to you the moment the game ends, and it answers the question that actually matters: what will the next tournament do to it? You enter the opponent's rating and the result. That is the whole input. There is no board, no engine, no account and no server — just the published Elo mathematics, run on your own results, offline. HOW IT WORKS • Expected score E = 1 / (1 + 10^((Rb − Ra) / 400)), rating change ΔR = K × (S − E) — the two lines every federation formula starts from. • Choose your rule set: tiered K (40 / 20 / 10 by rating and games played), a simplified formula with a bonus threshold, or a fixed K of 10 to 40 for club ladders and online leagues. • The 400-point rule can be switched on or off. • Tournament mode is round by round: the total…
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