Comparison

Pulsar Chess Engine vs FlipSight

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
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

FlipSight

Engage in strategic Othello/Reversi gameplay with AI analysis and online multiplayer. Sharpen your skills with a vast collection of puzzles and an extensive opening library. Compete daily on leaderboards and enjoy the game in 15 languages.

Highlights
  • AI game analysis
  • Online real-time matches
  • Extensive puzzle collection
  • Opening library with AI evaluations
  • Daily challenges and leaderboards
  • Available in 15 languages
Features
Read full description

FlipSight is an app for playing and analyzing Othello / Reversi. ▪ AI Analysis — Analyze your games with a fast and powerful AI. Get move-quality statistics such as Book, Brilliant, and Blunder, plus Key Moments analysis. ▪ Online Matches — Play real-time games with players worldwide, complete with ratings and rankings. Play against bots of various personalities and skill levels ▪ The Largest Puzzle Collection — XOT openings, midgame, and endgame puzzles to sharpen your skills ▪ The Largest Opening Library — Animated GIFs with AI evaluations for every opening ▪ Daily Challenges & Leaderboards — Compete for top records refreshed every day ▪ Available in 16 languages Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://othelloclub.com/flipsight/privacy.php?lang=en

Screenshots

Pulsar Chess Engine4 screens
FlipSight4 screens

Verdict

The call

The clearest difference is price: FlipSight at Free against Pulsar Chess Engine's $1.99. FlipSight also leads on rating (5.0 vs 4.3) and review sentiment (100% vs 67%). Pulsar Chess Engine's advantage is ratings volume (12 vs 1). On ads, in-app purchases, device support and iOS requirement 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

FlipSight is free to download; Pulsar Chess Engine costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

FlipSight holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Pulsar Chess Engine has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Pulsar Chess Engine's written reviews are positive against 100% of FlipSight's.

UpkeepUpdate frequency

Pulsar Chess Engine ships an update every 2 months, FlipSight every 3 days. The most recent releases landed on September 22, 2026 and September 12, 2026 respectively.

Scorecard6 real differences · 4 level
Pulsar Chess Engine versus FlipSight: the parameters behind the verdict, then further details
ParameterPulsar Chess EngineFlipSight
Price$1.99Free — better
Rating4.3 (12 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings12 — better1
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size11 MB31 MB
Age rating4+4+
DeveloperMichael AdamsTaejoon Chung

Customer experience

Pulsar Chess Engine

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews27 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

FlipSight

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pulsar Chess Engine

No in-app purchases

None

FlipSight

No in-app purchases

Questions

Is Pulsar Chess Engine free?
Pulsar Chess Engine costs $1.99, with no in-app purchases.
Is FlipSight free?
FlipSight is free to download, with no in-app purchases.
Which has better reviews, Pulsar Chess Engine or FlipSight?
FlipSight is rated higher. Pulsar Chess Engine averages 4.3 out of 5 from 12 ratings, while FlipSight averages 5.0 from 1 ratings.
Do Pulsar Chess Engine or FlipSight have ads?
Neither Pulsar Chess Engine nor FlipSight shows ads.
Which is updated more often, Pulsar Chess Engine or FlipSight?
Pulsar Chess Engine ships an update every 2 months, and FlipSight every 3 days. Most recently, Pulsar Chess Engine was updated on September 22, 2026 and FlipSight on September 12, 2026.

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