Welcome to a taste of early 1980s home computing.

This app focuses on the Sinclair ZX81 experience and is loaded with example software. Please note that the system is completely self contained and this means you cannot remotely add code, more games etc.


In 1980 the British company Science of Cambridge (later renamed Sinclair Research) released the Sinclair ZX80 home computer. The computer was developed with another technology company, Nine Tiles, and manufactured in a Timex Corporation factory in Dundee, Scotland. Followed in March 1981 by the even more popular successor, the Sinclair ZX81, both models had a profound impact on home and hobbyist computing in the UK and many other countries. Timex Corporation and Sinclair Research continued their joint venture and released the Timex Sinclair 1000 (TS1000) and 1500 (TS1500) variants of the ZX81 for the US market in July 1982 and July 1983 respectively.

Meanwhile, another iconic British home computer, the Sinclair ZX Spectrum, was under development and hit the market in April 1982... but that's another story.

Special thanks to Nine Tiles for granting permission to include the ROM code, to which they retain the intellectual property rights after all these years.

Additionally, many thanks to all the developers of the loaded ZX81 software who have all granted permission to include their titles in the app. We hope this list of software will continue to grow in future updates.

What's New

Version 1.3.4

• Improvements for iPhone X landscape layout
• Added CMD key shortcuts for external keyboards
• Added new Donkeysoft game: Bounce Redux
• Added new Dr Beep game: Long Jump
• Added Jim Bagley’s game: Jim Bagley’s ZX81 Racing

Ratings and Reviews



I can't believe the quality and care this app's creator put into it. This doesn't just memorialize the ZX81 -- which I bought and built in 1981, amazing memory -- it actually improves it. This thing is more usable in my phone than the old Z ever was in person hooked up to my portable black and white TV.

Respect and appreciation to the maker. You are an artist, this is just lovely.

Developer Response

Thank you so much for the kind words in your review. Hope you enjoy the improvements in the more recent versions. Respect from this developer too for the love in the ZX80/81 users’ community and the permissions that have been granted for this app to be possible. Standing on the shoulders of giants.

Wonderful little app


Nostalgia-inducing. Highly recommended.


Kevin Palser
30.5 MB
Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch.
English, German
Age Rating
Rated 9+ for the following:
Infrequent/Mild Horror/Fear Themes
Infrequent/Mild Cartoon or Fantasy Violence
© Palser 2017
In-App Purchases
  1. FORTY NINER $0.99
  2. ROCKET MAN $0.99
  3. Z-XTRICATOR $0.99


  • Family Sharing

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

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