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Screenshots

  • Jupiter ACE screenshot 1
  • Jupiter ACE screenshot 2
  • Jupiter ACE screenshot 3

About Jupiter ACE

Go back in time and learn to program Forth with this Jupiter ACE on your iPad. The Jupiter ACE was a home computer released back in 1982. While all other home computers at the time used BASIC as the built in programming language, the Jupiter ACE used Forth. This emulator is built with freely available documents and source code. Project files are available on github. Jupiter ACE is trademark of Andrews UK Ltd.

Ratings & reviews

4.0

8 ratings

5 ★ 50% 4 ★ 25% 3 ★ 13% 2 ★ 0% 1 ★ 13%

What’s new

Version 2.0 · Updated September 24, 2026

iACE has been rebuilt from the ground up, and now runs on iPhones as well as iPad: • sound on every device • .TAP tape import and export, and a tape browser • volume control • sharper graphics on every iPad size Your saved tapes and settings from iACE 1.x are kept.

App privacy

The developer, Memention Holding AB, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to Jupiter ACE

Looking for apps like Jupiter ACE? Here are 6 similar apps on the App Store. The highest rated is iAltairHD (5.0/5), and 5 of the 6 are free to download.

Jupiter ACE vs. alternatives
App Rating Price Last updated Compare
Jupiter ACE 4.0 / 5 (8 ratings) Free September 24, 2026
pocketFORTH – Free Jul 16, 2026 Compare
Kenbak-1 – Free Oct 14, 2026 Compare
iAltairHD 5.0 / 5 (8) 5.99 USD Jan 7, 2026 Compare
Blumoto – Free Dec 16, 2025 Compare
learnFORTH 5.0 / 5 (5) Free Sep 15, 2026 Compare
(LispLab) 5.0 / 5 (2) Free Sep 1, 2026 Compare

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