SmallFish Chess for Stockfish 4+

Stockfish Chess

Ted Wong

Designed for iPad

    • 4.8 • 3.2K Ratings
    • Free



SmallFish is a project based on the Stockfish chess engine. It uses the latest Stockfish chess engine (Stockfish 16.0 SFNNv6 neural networks), rated about Elo 3600+ and is the strongest chess app on the App Store.

SmallFish offers you three distinct ways to improve your game. You can review your game with comments, or study how Stockfish thinks, or track your progress. No in-app purchase, no ads, no data tracking, it's totally free!

SmallFish is simply amazing. It's small but powerful, you'll be surprised.


- Blunder checking
- Multiple line analysis
- Graphical evaluation of your game
- Game previews
- Dark mode support
- Endgame tablebase
- Opening books

It's free. Why not just download and try it yourself?

What’s New

Version 16.16.20

Fixed move-list for all iOS devices

Ratings and Reviews

4.8 out of 5
3.2K Ratings

3.2K Ratings

meta732 ,

One of the best!

As good as if not better than almost everything out there regardless of platform. I use this to analyze all of my games whether OTB or online. I love that it shows multiple lines with each move. Trust me when I say that it's hard to find anything as robust and user-friendly on PC (eg, Lucas Chess can run Stockfish but I haven't been able to configure the settings to display multiple lines during analysis). And hats off for an exceptional (and appropriate) privacy policy! This app is a gem and must-have for chess enthusiasts of every level. Not convinced by my endorsement? SmallFish is recommended by the Stockfish team via the official website. -14 Pro Max on iOS 16.1.x

Developer Response ,

Thanks for your support! SmallFish is always free and the best chess playing app!

AjedrezSobrio ,

Outstanding Tool

This thing is simply amazing! A must-have for any serious or aspiring Chess player. It used to be, in my experience, that a phone app couldn't match up to a program on a computer. I have this app on my lap(tablet)top and on my phone and it performs just the same. Extremely strong! You can see several lines simultaneously. Truest a great study/strengthening tool. The fact that it's free, well, it's just outstanding...!

Fprwsl ,

Opponent always runs out of time.

No matter what I do in the options, I always win because my opponent runs out of time. The game continues, however, even though the clock is 0.00 so that’s a good thing. This issue starts immediately: playing white pieces, I play 1. d4, black always immediately plays either d5 or f6; I play 2. c4 . . . . black “thinks” 20-40 seconds before making a second move, usually c5. Really? As long as 40 seconds to make the second move. And that “thinking” exists throughout the game. For instance, black offers a queen trade: I accept. Then black deliberates 20, 30, etc. seconds whether or not to capture my queen when there is obvious nothing to deliberate. Hardly a realistic or enjoyable scenario.

App Privacy

The developer, Ted Wong, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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