Jupiter ACE vs Kenbak
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jupiter ACE
Explore the history of computing by learning the Forth programming language on a simulated 1982 home computer. This educational tool provides an authentic experience for aspiring programmers interested in retro technology.
- Forth programming language simulation
- 1982 home computer emulation
- Educational retro computing experience
- Freely available source code
- iPad compatible
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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.
Kenbak
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Discover the history of computing with the Kenbak-1 Emulator! This emulator is not just a copy, but a carefully recreated digital version of the Kenbak-1, one of the first personal computers, released in 1971. Key Features: • Full Processor Emulation: Authentic emulation of all original Kenbak-1 instructions. • Interactive Front Panel: Replica of the control panel with working switches and LEDs. • Easy-to-use command input panel: Allows you to choose the specific processor instruction from the command panel and immediately store it in memory. • Memory Dump: Visual display of the contents of each memory location for debugging and analysis. • Save and Load Programs: Create, save, and load your own programs written for the Kenbak-1. • Documentation: Complete set of original Kenbak-1 documentation. • Settings: Option to adjust emulation speed and other parameters. The Kenbak-1 Emulator is the perfect tool for learning the fundamentals of computing, experimenting with machine code, and delving into computer history. It's a great way to understand how the first computers worked and how the foundations of the modern digital revolution were laid.
Screenshots
Verdict
The clearest difference is update cadence: Kenbak at every 3 weeks against Jupiter ACE's every 63 months. Jupiter ACE's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Jupiter ACE ships an update every 63 months, Kenbak every 3 weeks. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | Jupiter ACE | Kenbak |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (8 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 63 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 35 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Memention Holding AB | Takhir Zakirov |
In-app purchases
Jupiter ACE
No in-app purchases
Kenbak
No in-app purchases








