Comparison

OpenChess vs Ajedrez Caïssa chess

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

Head to head
About

OpenChess

Master chess openings by playing against a specialized AI. Explore specific defenses or move sequences, and gain insights into positional advantages and piece values. Improve your game from the very first moves.

Highlights
  • Learn specific chess openings
  • Play against AI focused on opening lines
  • Analyze positional advantages
  • Evaluate piece values and mobility
  • Understand pawn structure
  • Track defended and attacked pieces
Read full description

Learn chess openings with OpenChess: An Opening Explorer. Play against the computer, or play as both sides, and be shown the lines that are within any opening that you are interested in learning. Want to learn the Sicilian Defense or the Queen’s Gambit? Choose that category and play against that a computer that only follows lines within that opening category. Wany to focus on learning all of the openings that start with a specific move, such as pawn to “e4”? This category can also be selected, and you can play against a computer that only plays lines that start with “e4”. The chess engine in this app is not Stockfish, and it does not look very far ahead. It is meant to provide a decent base evaluation and allow the majority of the reason behind the evaluation of the current position to be shown to the user. The following information can be shown to the user: • Positional advantages for each piece type (pawn, knight, bishop, rook, queen and king) • Piece value advantages for each color • Mobility scores for each piece where mobility plays a big role (bishop, rook, queen, king) • Pawn advantages and disadvantages (passed pawns, isolated pawns, backwards pawns, doubled pawns) • Total value of pieces attacked by each color as well as total value of pieces defended by each color A lot of chess games are won and lost within the opening moves, this app was designed to help players learn solid openings that either help them gain a winning advantage out of the opening, or at the very least help them not lose due to the opening moves played. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ajedrez Caïssa chess

Features
Read full description

Ajedrez Caïssa Chess is the ultimate chess game for iOS. Inspired by Caïssa, the mythological goddess of chess, this app combines the magic of the classic game with modern technology. KEY FEATURES: PLAY AGAINST THE AI – Take on an artificial intelligence with multiple difficulty levels, from beginner to expert. Perfect for learning and improving your game. REAL-TIME ONLINE MULTIPLAYER – Challenge your friends by generating a unique link. Share it and start a match instantly, with no sign-up required. ELEGANT BOARD – A clean, modern design that makes every match a pleasing visual experience. COMPLETE CHESS RULES – Castling, en passant, pawn promotion, and all the official rules implemented. FREE WITH ADS – Download and play for free. The app includes ads that allow us to keep the game free for everyone. Why Caïssa Chess? Caïssa is the muse of chess. With this app, we honor that age-old tradition by bringing classic chess to the digital world with a smooth, responsive, and easy-to-use experience. Ideal for players of all levels: from those learning the basic rules to enthusiasts looking to practice and improve continuously. Download Caïssa Chess today and discover why chess remains the most fascinating strategy game in the world.

Screenshots

OpenChess4 screens
Ajedrez Caïssa chess3 screens

Verdict

The call

The clearest difference is ads: OpenChess at none against Ajedrez Caïssa chess's shown. On price, update cadence, 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. OpenChess sells 10 one-off in-app purchases and Ajedrez Caïssa chess sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OpenChess ships an update fortnightly, Ajedrez Caïssa chess every 9 days. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 8 level
OpenChess versus Ajedrez Caïssa chess: the parameters behind the verdict, then further details
ParameterOpenChessAjedrez Caïssa chess
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyFortnightlyEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size57 MB52 MB
Age rating4+17+
DeveloperDavid BryantDAMIAN HERNAN SINAY

In-app purchases

10 purchases

OpenChess

One-time10
  • Tarrasch Defense Opening$0.99
  • Trompowsky Attack Opening$0.99
  • Scandinavian Defense Opening$0.99
Show 7 more
  • Three Knights Opening$0.99
  • Zukertort Opening$0.99
  • Van't Kruijs Opening$0.99
  • Vienna Game Opening$0.99
  • Ware Opening$0.99
  • Opening Explorer$4.99
  • OpenChess Premium$19.99
1 purchases

Ajedrez Caïssa chess

One-time1
  • Quitar anuncios$3.99

Questions

Is OpenChess free?
OpenChess is free to download, with in-app purchases available.
Is Ajedrez Caïssa chess free?
Ajedrez Caïssa chess is free to download, with in-app purchases available.
Do OpenChess or Ajedrez Caïssa chess have ads?
Ajedrez Caïssa chess shows ads; OpenChess does not.
Which is updated more often, OpenChess or Ajedrez Caïssa chess?
OpenChess ships an update fortnightly, and Ajedrez Caïssa chess every 9 days. Most recently, OpenChess was updated on October 15, 2026 and Ajedrez Caïssa chess on October 28, 2026.

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