Comparison

Openit vs Calvin Chess Trainer

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

Head to head
About

Openit

Learn chess openings through interactive play and guided lessons. This app offers a gamified approach to understanding and memorizing opening moves, with modes for learning and practice. Sharpen your chess strategy from the first move.

Highlights
  • Interactive opening library
  • Coach-guided explanations
  • Gamified progression with streaks
  • Practice mode for reinforcement
  • Learn popular chess openings
Features
Read full description

Openit makes learning chess openings fun, fast, and effective. Forget rote memorization. With Openit, you play, interact, and truly understand openings step by step, guided by a friendly in-app coach. Learn Mode • Choose from a growing library of openings • Explore interactive lines directly on the board • Get clear, simple explanations for every move • Keep your daily streak Practice Mode • Train without hints by playing the correct responses • Strengthen memory and pattern recognition Whether you’re rated 600 or 2000 Elo, Openit provides structured, gamified training to sharpen your play from move one. Key Features • Popular openings like the Vienna Gambit, French Defense, Italian Game, and more • Gamified progression with streaks • Coach-guided learning with simple, practical tips • Practice mode to test and reinforce your knowledge Spend just 5 minutes a day, turn your openings into a weapon, and start winning games earlier. Terms of Service: https://www.louisraffin.com/openit/terms-of-service Privacy Policy: https://www.louisraffin.com/openit/privacy-policy

About

Calvin Chess Trainer

Features
Read full description

Calvin Chess Trainer drills the skills that puzzles take for granted: seeing the whole board, and reading and finding squares and moves without thinking. Daily warm-up Five quick timed drills, about five minutes: find the checks, spot the loose pieces, find the forks, name squares from Black's side, then a mate in one. Vision • Find Checks: every check in a real game position • Find Captures: every capture on the board • Hanging Pieces: every undefended piece • Forks & Skewers: the squares that hit two targets • Knight Sight: every square a knight reaches • Knight Flight: the fewest moves to the target • Pawn Attack: slip past a wall of pawns • Mate in 1: 400 positions, one move to mate Notation • Squares: find the square, fast, from White's side or Black's • Files & Ranks: name every file and rank • Read Moves: read a move, then play it • Piece Letters: K, Q, R, B and N at a glance • Piece Values: which side comes out ahead? Opening Explorer Play through the openings with book moves, Stockfish hints and an evaluation bar. Practice your way • Practice at your own pace, or race the clock in timed rounds • Every drill remembers its setup, and Continue picks up where you left off • Results show the answers you missed • Personal bests, saved on your device • Squares and pieces spoken aloud as you play • Works offline No ads, no in-app purchases and no account. From Internut Education.

Screenshots

Openit4 screens
Calvin Chess Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Calvin Chess Trainer at none against Openit's 2. Calvin Chess Trainer also leads on iOS requirement (15.0 vs 17.0). 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. Openit sells 2 in-app purchases, starting at $3.99 per month. Calvin Chess Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

Openit ships an update every 10 days, Calvin Chess Trainer every 5 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Openit versus Calvin Chess Trainer: the parameters behind the verdict, then further details
ParameterOpenitCalvin Chess Trainer
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 10 daysEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size102 MB170 MB
Age rating4+4+
DeveloperLouis RaffinDAVID MARKLE

In-app purchases

2 purchases

Openit

Subscriptions2
  • Openit Pro Monthly$3.991 Month
  • Openit Pro Annual7 Days trial$24.991 Year
None

Calvin Chess Trainer

No in-app purchases

Questions

Is Openit free?
Openit is free to download, with in-app purchases available.
Is Calvin Chess Trainer free?
Calvin Chess Trainer is free to download, with no in-app purchases.
Do Openit or Calvin Chess Trainer have ads?
Neither Openit nor Calvin Chess Trainer shows ads.
Which is updated more often, Openit or Calvin Chess Trainer?
Openit ships an update every 10 days, and Calvin Chess Trainer every 5 days. Most recently, Openit was updated on October 30, 2026 and Calvin Chess Trainer on October 25, 2026.

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