# Jupiter ACE vs Notespawn

The clearest difference is update cadence: Notespawn at every 2 months against Jupiter ACE's every 63 months. On price, ads, in-app purchases and device support 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, Notespawn every 2 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Jupiter ACE | Notespawn |
| --- | --- | --- |
| 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 2 months** |
| Monetization | Free | — |
| Size | 35 MB | 2 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Memention Holding AB](https://appshunter.io/developer/286367873) | [Thaddeus Arndt](https://appshunter.io/developer/6781474491) |

## 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


### Notespawn

[App page](https://appshunter.io/ios/app/notespawn-sight-reading/id6781856461)

**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 Notespawn free?

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

### Do Jupiter ACE or Notespawn have ads?

Neither Jupiter ACE nor Notespawn shows ads.

### Which is updated more often, Jupiter ACE or Notespawn?

Jupiter ACE ships an update every 63 months, and Notespawn every 2 months. Most recently, Jupiter ACE was updated on October 24, 2026 and Notespawn on October 9, 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.*