Katflux Studio An independent app studio in South Africa

Katflux Studio: we make apps for the web, Android and iOS.

We design, build and run our own SaaS products for the browser and mobile apps for Android and iPhone. Idea, design, code, launch and every update after that, all done in-house.

See our apps or say hello
CipherChess in the browser, reviewing a game with an evaluation graph and move-by-move accuracy
CipherChess, on the web
Nightboard on a phone: picking a blindfold opponent called Wren
Nightboard, Android & iOS
A CipherChess puzzle on a phone: mate in two
CipherChess, on your phone

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What we've made

Our apps

Apps we design, build and run ourselves. One is live on the web, one is nearly ready for your phone, and more are on the way.

  • Live on the web
  • Android & iOS coming soon

CipherChess

Chess study platform · Web app

Where serious chess players prepare. Ten million games, opening repertoires you can drill, and game reviews that tell you the truth. All in the browser, nothing to install.

What it does

  • Search 10M+ games by position, player or opening
  • Build opening repertoires and drill them
  • Review any game move by move with the engine
  • Daily puzzles, free to start
Visit cipherchess.com
The CipherChess board reviewing Carlsen against Firouzja: an evaluation graph across the game, 96.8% and 87% accuracy, move 16 Bxg6 marked best on the board, and a move quality breakdown from great to mistake
Opponent prep on the CipherChess board: after 1.e4, every reply Magnus Carlsen has faced is drawn as an arrow, with games played and a white, draw and black bar for each
Prep against Carlsen: every reply he's faced after 1.e4
The CipherChess game database on a phone, searching more than ten million games
10M games, in your pocket
  • Coming soon
  • Android & iOS

Nightboard

Blindfold chess trainer · Mobile app

Short nightly sessions build a picture of the board you can hold in your head. Then you put it to work in puzzles and full games, played without ever seeing the board.

What's inside

  • 36 guided lessons, from coordinates to full blindfold games
  • 260 blind puzzles across 11 chapters
  • Six opponents, each with their own style
  • A vision rating that tracks speed and accuracy
Tell me when it launches
  1. A Nightboard drill: arrows on the board show the line to memorise before the lights go out

    Watch the line, then play it in the dark

  2. Choosing a blindfold opponent in Nightboard, from Pebble the beginner to tougher characters

    Opponents with a personality each

  3. The Nightboard training hub with a heatmap of how sharply you know each square

    A heatmap of every square you know

  4. A Nightboard game won by checkmate, played entirely blindfold

    Checkmate, without ever seeing the board

More apps are on the way

The studio

How we work

We're Katflux Studio, a small, independent app studio in South Africa. We dream up our own web apps and mobile apps, build every part of them ourselves, and keep making them better long after launch.

  1. End to end

    Design, code, servers and support all happen here. Nothing gets lost in a handover.

  2. Fast on any phone

    We test on budget phones and patchy connections, not only on the latest flagship.

  3. Honest by default

    Clear pricing, no dark patterns, and we never sell your data.

  4. In it for the long run

    Every app is maintained, improved and shaped by the people who use it.

Contact

Say hello

Partnerships, press, questions about our apps or support. Write to us and a real person will read it.

Open in your mail app App support: support@katflux.com