Comparison

Jupiter ACE vs Kenbak

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Forth programming language simulation
  • 1982 home computer emulation
  • Educational retro computing experience
  • Freely available source code
  • iPad compatible
Features
Read full description

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.

About

Kenbak

Features
Read full description

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

Jupiter ACE3 screens
Kenbak3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Jupiter ACE versus Kenbak: the parameters behind the verdict, then further details
ParameterJupiter ACEKenbak
PriceFreeFree
Rating4.0 (8 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings8 — better—
Update frequencyEvery 63 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size35 MB26 MB
Age rating4+4+
DeveloperMemention Holding ABTakhir Zakirov

In-app purchases

None

Jupiter ACE

No in-app purchases

None

Kenbak

No in-app purchases

Questions

Is Jupiter ACE free?
Jupiter ACE is free to download, with no in-app purchases.
Is Kenbak free?
Kenbak is free to download, with no in-app purchases.
Do Jupiter ACE or Kenbak have ads?
Neither Jupiter ACE nor Kenbak shows ads.
Which is updated more often, Jupiter ACE or Kenbak?
Jupiter ACE ships an update every 63 months, and Kenbak every 3 weeks. Most recently, Jupiter ACE was updated on October 2, 2026 and Kenbak on October 11, 2026.

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