# Jupiter ACE vs (LispLab)

The clearest difference is rating: (LispLab) at 5.0 against Jupiter ACE's 4.0. (LispLab) also leads on review sentiment (100% vs 67%) and update cadence (every 2 months vs every 63 months). Jupiter ACE's advantage is in-app purchases (none vs 1) and ratings volume (8 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. (LispLab) sells 1 one-off in-app purchase. Jupiter ACE asks for nothing beyond the download.

(LispLab) holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Jupiter ACE has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Jupiter ACE's written reviews are positive against 100% of (LispLab)'s.

Jupiter ACE ships an update every 63 months, (LispLab) every 2 months. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Jupiter ACE | (LispLab) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (8 ratings)](https://appshunter.io/ios/app/jupiter-ace/id590389822/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lisplab/id6760487669/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 63 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 35 MB | 4 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Memention Holding AB](https://appshunter.io/developer/286367873) | [John Kennedy](https://appshunter.io/developer/284943103) |

## 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


### (LispLab)

[App page](https://appshunter.io/ios/app/lisplab/id6760487669)

Master the Scheme programming language with structured lessons, a built-in interpreter, and interactive exercises. Track your progress and explore functional programming concepts, including a new module for the beginner-friendly Logo language.

**Highlights:** 90 guided Scheme lessons, Built-in REPL and interpreter, Exercises with hints, Progress tracking, Logo module included, Light/dark themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |


## Frequently asked questions

### Is Jupiter ACE free?

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

### Is (LispLab) free?

(LispLab) is free to download, with in-app purchases available.

### Which has better reviews, Jupiter ACE or (LispLab)?

(LispLab) is rated higher. Jupiter ACE averages 4.0 out of 5 from 8 ratings, while (LispLab) averages 5.0 from 1 ratings.

### Do Jupiter ACE or (LispLab) have ads?

Neither Jupiter ACE nor (LispLab) shows ads.

### Which is updated more often, Jupiter ACE or (LispLab)?

Jupiter ACE ships an update every 63 months, and (LispLab) every 2 months. Most recently, Jupiter ACE was updated on October 2, 2026 and (LispLab) on October 7, 2026.

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