Comparison

Calvin Chess Trainer vs Chess Notation Fluency

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

Head to head
About

Calvin Chess Trainer

Features
Read full description

Master the chessboard from the ground up! Calvin Chess Trainer turns board fundamentals into engaging, hands-on drills designed for young learners. Chess Notation Trainer Learn files, ranks, and square names by tapping the board. Three modes let you progress at your own pace: Explore to discover, Practice to build confidence, and Speed Round to test your skills under a 30-second timer. Hear every square spoken aloud as you tap, reinforcing coordinate recognition through sight and sound. Move Trainer Read standard chess notation and find the correct move on an interactive board. Drag and drop pieces to solve 500 curated puzzles from the Lichess database. Incorrect? An arrow shows you where the piece should have gone so you learn from every attempt. Chess Vision Drills Build board visualization skills with four unique drills: Forks & Skewers — find the square where a piece attacks two targets at once Knight Sight — locate all squares a knight can reach in one jump Knight Flight — navigate a knight to a target in the fewest moves Pawn Attack — guide a piece through a field of enemy pawns to the other side Built for Kids Audio feedback on every tap — files, ranks, and piece names spoken clearly Streak counter with milestone celebrations at 5, 10, 15, and 20 Personal best tracking across every drill, mode, and difficulty Hard Mode flips the board to black's perspective for an extra challenge 25+ board themes and 28 piece sets to make it your own No ads. No in-app purchases. Just chess. Whether your child is just learning the names of the squares or sharpening their tactical vision, Calvin Chess Trainer makes every drill feel like a game. From Internut Education.

About

Chess Notation Fluency

Master chess notation with interactive exercises. Practice reading and writing Standard Algebraic Notation (SAN) using real game sequences. Track your progress and learn from detailed results.

Highlights
  • Read and write Standard Algebraic Notation (SAN)
  • Practice with real game sequences
  • Train notation in both directions
  • Customizable practice modes
  • Detailed performance tracking
  • Offline practice available
  • No personal data collection
Features
Read full description

Make chess notation feel natural. Chess Notation Fluency helps you read and write Standard Algebraic Notation (SAN) through focused practice with real game sequences. TRAIN IN BOTH DIRECTIONS • Watch a move on the board, then enter its notation. • Read a notation prompt, then play the move. • Use Mixed practice to alternate naturally between the two skills. PRACTICE YOUR WAY Choose White or Black, type answers or use multiple choice, begin in the opening, middlegame, or endgame, and select a quick session or a complete game. Exercises retain the surrounding moves so you practice notation in context—not as isolated flash cards. LEARN FROM YOUR RESULTS Track first-try accuracy, attempts, response time, revealed answers, notation features, mistake patterns, and recent sessions. START FREE. EXPAND ONCE. Every practice mode works with two included starter games. An optional one-time Full Game Library purchase unlocks 5,000 curated games for offline practice and lets you import your own PGN games. One purchase unlocks the library on iPhone, iPad, and Mac and supports Family Sharing. There are no subscriptions or ads. PRIVATE AND AVAILABLE Practice history and imported games stay in app-managed storage and synchronize through your private iCloud storage when available. Downloaded content works offline. Chess Notation Fluency has no developer account system and collects no personal data. Available on iPhone, iPad, and Mac.

Screenshots

Calvin Chess Trainer4 screens
Chess Notation Fluency4 screens

Verdict

The call

The clearest difference is in-app purchases: Calvin Chess Trainer at none against Chess Notation Fluency's 1. Calvin Chess Trainer also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads 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. Chess Notation Fluency sells 1 one-off in-app purchase. Calvin Chess Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

Calvin Chess Trainer ships an update every 5 days, Chess Notation Fluency every 3 days. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 7 level
Calvin Chess Trainer versus Chess Notation Fluency: the parameters behind the verdict, then further details
ParameterCalvin Chess TrainerChess Notation Fluency
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better26.0
Further details — not scored
Size215 MB42 MB
Age rating4+4+
DeveloperDAVID MARKLEMark Harris

In-app purchases

None

Calvin Chess Trainer

No in-app purchases

1 purchases

Chess Notation Fluency

One-time1
  • Full Game Library$4.99

Questions

Is Calvin Chess Trainer free?
Calvin Chess Trainer is free to download, with no in-app purchases.
Is Chess Notation Fluency free?
Chess Notation Fluency is free to download, with in-app purchases available.
Do Calvin Chess Trainer or Chess Notation Fluency have ads?
Neither Calvin Chess Trainer nor Chess Notation Fluency shows ads.
Which is updated more often, Calvin Chess Trainer or Chess Notation Fluency?
Calvin Chess Trainer ships an update every 5 days, and Chess Notation Fluency every 3 days. Most recently, Calvin Chess Trainer was updated on October 3, 2026 and Chess Notation Fluency on October 13, 2026.

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