Comparison

Stockfish Chess Analysis vs Challenge World

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Stockfish Chess Analysis

Analyze chess positions from a photo or by inputting moves. Get AI-powered best move suggestions, learn tactics, and play against the engine with live tips. Ideal for players of all levels looking to improve their game.

Highlights
  • Scan chessboards from photos
  • AI-powered best move suggestions
  • Learn new chess tactics
  • Play against Stockfish engine
  • Live help and tips during play
  • Multiple difficulty levels
Features
Read full description

Chess Engine Analyzer is an easy app to help you get better at chess using the powerful Stockfish engine. What You Can Do Scan Any Board: Take a picture of a 2D chessboard and the app shows the exact position for analysis. Get Best Moves: See the smartest moves and learn new tactics. Challenge Stockfish: Play against the computer with live help and tips. Top Features Fast camera scanning Real-time move suggestions Play chess at different difficulty levels Simple, modern design Needs internet for scanning and analysis Who Is It For? Chess beginners and students Tournament players Coaches and teachers Anyone who wants to get better at chess Download Chess Engine Analyzer and make your chess learning simple! Terms of Use: https://rigorous-flamingo-539.notion.site/Chess-Engine-Analyzer-ToS-21d80b4a5c4d801ead9afbef0149c0ba Privacy Policy: https://rigorous-flamingo-539.notion.site/Chess-Engine-Analyzer-Privacy-Policy-21c80b4a5c4d801381acd6bc0f3f49bc

About

Challenge World

Read full description

Challenge World is a cognitive gauntlet built to find your limits. 310 levels. 50+ challenge types. Every session different. You'll face memory grids, rhythm tests, spatial logic, pattern locks, voice challenges, estimation games, reflex traps, and dozens of mechanics you won't see coming. The game shuffles daily the same level plays differently every time. 6 TIERS. RISING DIFFICULTY. Foundation is free. Prove you belong before you touch Synapse, Cortex, Nexus, Zenith, or Apex. Most players don't clear the third tier. A handful reach the top. YOUR IQ MOVES. Every level you pass raises your IQ score. Every fail costs you. Hints carry a penalty. The leaderboard is honest no grinding past it. HEAD-TO-HEAD MODE Challenge real players to 1v1 duels. Pick a topic, pick your opponent, prove it live. GAUNTLETS & BOSS LEVELS Every tier ends with a gauntlet 10 challenges, zero resets, zero mercy. One wrong answer sends you back to 1. Boss levels pull from your entire tier history. You don't skip them. Available in English and French.

Screenshots

Stockfish Chess Analysis4 screens
Challenge World4 screens

Verdict

The call

The clearest difference is update cadence: Challenge World at every 5 days against Stockfish Chess Analysis's fortnightly. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stockfish Chess Analysis sells 3 in-app purchases, starting at $8.99 per 7 days and Challenge World sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Stockfish Chess Analysis ships an update fortnightly, Challenge World every 5 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Stockfish Chess Analysis versus Challenge World: the parameters behind the verdict, then further details
ParameterStockfish Chess AnalysisChallenge World
PriceFreeFree
Rating4.4 (81 ratings) — better—
Positive reviews14.3% of reviews—
Number of ratings81 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size30 MB88 MB
Age rating4+12+
DeveloperKrishna Sangeeth KSEric Martial Kameni

In-app purchases

3 purchases

Stockfish Chess Analysis

Subscriptions3
  • Weekly Subscription$8.997 Days
  • Monthly Subscription$17.991 Month
  • Yearly Subscription$69.991 Year
6 purchases

Challenge World

One-time6
  • Synapse Tier$0.99
  • Cortex Tier$0.99
  • Nexus Tier$0.99
Show 3 more
  • Zenith Tier$0.99
  • Apex Tier$0.99
  • Head-to-Head Mode$0.99

Questions

Is Stockfish Chess Analysis free?
Stockfish Chess Analysis is free to download, with in-app purchases available.
Is Challenge World free?
Challenge World is free to download, with in-app purchases available.
Do Stockfish Chess Analysis or Challenge World have ads?
Neither Stockfish Chess Analysis nor Challenge World shows ads.
Which is updated more often, Stockfish Chess Analysis or Challenge World?
Stockfish Chess Analysis ships an update fortnightly, and Challenge World every 5 days. Most recently, Stockfish Chess Analysis was updated on October 30, 2026 and Challenge World on October 28, 2026.

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