iPhone Screenshots


Shredder, the most successful chess program ever, is now also available for the iPhone. You can play against Shredder, analyze with him and solve chess puzzles. It offers the usual Shredder standard for your pocket.

In addition to the outstanding playing strength of the 12 times computer chess world champion, Shredder is also able to mimic the play of a human chess player with any playing strength. He even deliberately makes typical human mistakes in those levels.

Solve 1000 built in chess puzzles. Shredder keeps track of your performance and offers advice if needed.

You can adjust Shredder’s playing strength from beginner to master level. If you like, Shredder automatically adjusts his strength to yours. He even calculates an Elo rating for you. This is how the playing strength of chess players is typically measured.

During the game a coach is watching your moves and warns you if you are about to make a mistake.

See how you are getting better and better the more games you play and the more chess puzzles you solve.

* Adjustable playing strength
* Intuitive and very easy to operate
* 1000 built in chess puzzles
* See your rating in a diagram
* Outstanding playing strength on the iPhone
* Analyse your games with Shredder, find your mistakes and improve your play
* Coach shows your mistakes
* Different playing styles from passive to aggressive
* Great variety: opening book with more than one million moves
* Enter and analyze any position you like
* Load and save games (incl. names, date, etc.)
* Send games via email
* Different chess boards and pieces
* Support for VoiceOver / Accessibility
* Improve your play whenever and wherever you like

Also check out our highly refined version for iPad.

What’s New

Version 1.10.0

We improved the performance and fixed small bugs.

Ratings and Reviews

4.3 out of 5
54 Ratings

54 Ratings

Bosbillk ,

Rating bug

Great chess game I’ve been using for years. Suddenly there’s a bug where after a game the computer says it will increase its rating to the maximum (2600) difficulty, even if I lose. It used to work well and increment based on performance and it was my favorite feature.

kulsayogi ,

Shedder RULES!

I absolutely LOVE this app!

Shredder is by FAR the best chess app I’ve ever used.

It’s breathtakingly FAST!

Using it in “aggressive mode” is how I like to use it, because it makes every game FUN!

Beyond the excitement of each game played that way, I find that taking additional time to study the record of each game solidifies my understanding of what the hell happened 🤔 🤣

A summary of all my experience doing battle with Shredder:
among all the best living players I’ve ever gone up against — even the most accommodating, patient, informative, and generous of opponents — none has taught me as much in such an amazingly short time as has Shredder.

In aggressive mode, even though I realize it’s thinking far, far ahead and referring to a huge database of games played by grand masters to prepare itself for each potential move (modifying both its strategy and its tactics along the way), it makes each move so ridiculously quickly that I just pretend I’m facing a truly awesome competitor who will still gladly teach me how to weigh the options in any given situation and to think ahead the way he does. It’s wonderful! ♥️


I’ve enthusiastically recommended Shredder to every chess lover I’ve ever known, and each of them has wound up doing exactly the same.

Pass it on!

Player12335223451234512345 ,

Not Realistic

I’m getting sick and tired of this app. I’m a class A player (1800+) and like to play on the app on the rides home. No matter what setting I choose I get demolished at 1800. At the 1700 its too easy. I play live over the board tournaments all the time and rarely (never) do you see 1800 players attack wildly before they even develop. The app gets away with it because it has perfect calculation within a number of plays. If I wanted to play a harder level I would choose 2100+ in the settings. Please calibrate this app. If I wanted to play against a titled caliber player I would not choose the 1800 setting at normal. Other than that the app works fine.


Eiko Bleicher
31.7 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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