# Jupiter ACE vs AP Computer Science Quiz

The clearest difference is price: Jupiter ACE at Free against AP Computer Science Quiz's $1.99. AP Computer Science Quiz's advantage is iOS requirement (11.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Jupiter ACE is free to download; AP Computer Science Quiz costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Jupiter ACE ships an update every 63 months, AP Computer Science Quiz every 42 months. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Jupiter ACE | AP Computer Science Quiz |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| 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 42 months** |
| Monetization | Free | — |
| Size | 35 MB | 11 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Memention Holding AB](https://appshunter.io/developer/286367873) | [Nurten PIRLI](https://appshunter.io/developer/1495958705) |

## 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


### AP Computer Science Quiz

[App page](https://appshunter.io/ios/app/ap-computer-science-quiz/id1666488425)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Jupiter ACE free?

Jupiter ACE is free to download, with no in-app purchases.

### Is AP Computer Science Quiz free?

AP Computer Science Quiz costs $1.99, with no in-app purchases.

### Do Jupiter ACE or AP Computer Science Quiz have ads?

Neither Jupiter ACE nor AP Computer Science Quiz shows ads.

### Which is updated more often, Jupiter ACE or AP Computer Science Quiz?

Jupiter ACE ships an update every 63 months, and AP Computer Science Quiz every 42 months. Most recently, Jupiter ACE was updated on October 2, 2026 and AP Computer Science Quiz on October 15, 2026.

---

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