# Jupiter ACE vs Kenbak

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.

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.

## The numbers

| Metric | Jupiter ACE | Kenbak |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/jupiter-ace/id590389822/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 63 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 35 MB | 26 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Memention Holding AB](https://appshunter.io/developer/286367873) | [Takhir Zakirov](https://appshunter.io/developer/1717448184) |

## What reviewers say

### Jupiter ACE

[App page](https://appshunter.io/ios/app/jupiter-ace/id590389822)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Kenbak

[App page](https://appshunter.io/ios/app/kenbak-1/id6744865263)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*