Comparison

Pulsar Chess Engine vs Chessimo 2.0

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

Head to head
About

Pulsar Chess Engine

Play chess and six popular variants with adjustable AI difficulty levels. Review logged games, access master game collections, and utilize Crafty engine analysis for standard chess and Chess960. Offers accessibility features for blind users.

Highlights
  • Plays 7 chess variants
  • Adjustable AI difficulty levels
  • Game logging and review
  • Master game collections
  • Crafty engine analysis
  • VoiceOver accessibility
Features
Currently charting
Read full description

The Pulsar Chess Engine plays Chess and six variants all with multiple levels. The variants are Chess960, Crazyhouse, Loser's, Atomic, Three Checks and Giveaway. Rules included in-app. In addition, there is also a review mode to look at the user's log file with analysis available for non variants. 10 game collections of classic and modern master games are included to look at including Kasparov, Fischer, Carlsen, Capablanca and Morphy 1858 collections. These collections and the log file are searchable. Pulsar values mobility and active positions. In app there is an article with more on its playing style and how to train against it. With the variants, each has its own style. Chess960, Three Checks and Crazyhouse are the more chess like variants and adoptable to learn to play for anyone with interest. The rules of all games are in app. Pulsar has levels of play from beginner too advanced. Games with a time control are the hardest though Pulsar doesn't call the player's time. The time is more to handicap Pulsar's strength, but users will have a clock and can see if it's gone negative if they want to play the time control. The game button - configure game menu item, lets the user control the variant and difficulty. It defaults to Chess at Easy(lowest level) but remembers the current settings when the App restarts. There are choices of pieces and board color schemes. The Pulsar program was originally developed by me for computers starting in 1998 and came to mobile for the first time in 2014. Pulsar's board is accessible to the blind using Voice Over, a screen reader. Tap on a square and it will say whats on it and double tap to move or choose from three move methods. A screen reader can normally read anything with text like a button, but a board is a collection of images. To make it accessible, text must be returned to Voice Over when a tap is in the area of a square. Pulsar began as a chess program and later learned variants. It ran extensively on two servers for many years both at chess and variants. The ratings on the board reflect strength I saw in rated play on handicapped bots. They are not 100% exact but generalizations I made from the various bots I ran at different settings. If in the new game selector, Play vs. Computer is unchecked the user can move for both sides. This is to allow two people at same location to use the App as a board for a game and have the app enforce move legality and results for whatever variant is selected.

About

Chessimo 2.0

Master the game of chess with unlimited free games, over 150,000 tactics puzzles, interactive lessons, and a strong computer opponent. This app offers a unique end-to-end training experience, allowing you to practice puzzles and then immediately apply your skills against AI. Improve your rating and unlock your potential as a chess player.

Highlights
  • 150,000+ tactics puzzles
  • Interactive lessons and videos
  • Play against computer opponent
  • Game analysis
  • Opening explorer
  • Performance stats
Features
Read full description

Play chess for free on one of the best chess app in the world! Enjoy free unlimited chess games and improve your chess rating with 150,000+ tactics puzzles, interactive lessons and videos, and a powerful computer opponent. Unlock your inner chess master today! We are the only app in the market that allows you finish a puzzle and continue playing the exercise against the computer! This will allow to have an end to end training experience, starting with the puzzle, and when it is solved, continue playing against the computer! THE FULL EXPERIENCE IS HERE! CHESS TACTICS & CHESS PUZZLES: - Enjoy 150,000+ unique puzzles - Rated mode automatically adjusts to your skill level to help you improve - Race the clock to beat your high score in game - Practice puzzles with specific themes in learning mode CHESS TRAINING LESSONS: - Hundreds of quality chess lessons and chess videos made by masters - Interactive tutorials and trainings with tips and recommendations and how to improve your game - Learn all the chess rules and strategies in a step-by-step lesson plan & trainings PLAY CHESS AGAINST THE COMPUTER: - Train with the different modules in the app - Choose the level of computer opponent you want to play - Analyze your chess games to see where you went wrong and how you can improve - See how high you can go! PLAY CHESS FOR FREE: - Play chess completely free with your friends - Play daily correspondence chess for low-pressure games on your own schedule - Try exciting chess 960 variant  ... and MUCH MORE: - Strategies by the best authors, coaches, and trainers - Develop an unbeatable opening repertoire with the opening explorer - Get in-depth performance stats about your games, Puzzles and Lessons

Screenshots

Pulsar Chess Engine4 screens
Chessimo 2.03 screens

Verdict

The call

The clearest difference is price: Chessimo 2.0 at Free against Pulsar Chess Engine's $1.99. Chessimo 2.0 also leads on ratings volume (57 vs 12) and iOS requirement (11.0 vs 15.6). Pulsar Chess Engine's advantage is in-app purchases (none vs 6) and review sentiment (70% vs 44%). On rating, 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

Chessimo 2.0 is free to download; Pulsar Chess Engine costs $1.99 up front. Chessimo 2.0 sells 6 one-off in-app purchases. Pulsar Chess Engine asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Pulsar Chess Engine against 4.2 for Chessimo 2.0. Both are backed by a comparable volume of ratings — 12 and 57 respectively. Written reviews are what separate them: 70% of Pulsar Chess Engine's written reviews are positive against 44% of Chessimo 2.0's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

Scorecard7 real differences · 4 level
Pulsar Chess Engine versus Chessimo 2.0: the parameters behind the verdict, then further details
ParameterPulsar Chess EngineChessimo 2.0
Price$1.99Free — better
Rating4.3 (12 ratings) — better4.2 (57 ratings)
Positive reviews70.0% of reviews — better43.6% of reviews
Number of ratings1257 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#200 — better—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size11 MB122 MB
Age rating4+4+
DeveloperMichael Adams8 x 8 Media AG

Customer experience

Pulsar Chess Engine

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews30 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

Chessimo 2.0

All ratings57 ratings
Positive80.7%
Neutral3.5%
Negative15.8%
Written reviews78 reviews
Positive43.6%
Neutral6.4%
Negative50.0%

In-app purchases

None

Pulsar Chess Engine

No in-app purchases

6 purchases

Chessimo 2.0

One-time6
  • Activation of all Tactics Units$2.99
  • Activation of all Strategy Units$2.99
  • Activation of all Endgame Units$2.99
Show 3 more
  • Activation of all opening variations$2.99
  • Activation of all Commented Engame-Units$2.99
  • Activate all Train exercises$14.99

Questions

Is Pulsar Chess Engine free?
Pulsar Chess Engine costs $1.99, with no in-app purchases.
Is Chessimo 2.0 free?
Chessimo 2.0 is free to download, with in-app purchases available.
Which has better reviews, Pulsar Chess Engine or Chessimo 2.0?
Pulsar Chess Engine is rated higher. Pulsar Chess Engine averages 4.3 out of 5 from 12 ratings, while Chessimo 2.0 averages 4.2 from 57 ratings.
Do Pulsar Chess Engine or Chessimo 2.0 have ads?
Neither Pulsar Chess Engine nor Chessimo 2.0 shows ads.
Which is updated more often, Pulsar Chess Engine or Chessimo 2.0?
Pulsar Chess Engine ships an update every 2 months, and Chessimo 2.0 every 2 months. Most recently, Pulsar Chess Engine was updated on October 10, 2026 and Chessimo 2.0 on September 28, 2026.

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