# iAltairHD vs CloudLabs Solubility

The clearest difference is price: CloudLabs Solubility at Free against iAltairHD's $5.99. CloudLabs Solubility also leads on device support (3 vs 1) and iOS requirement (9.0 vs 15.4). iAltairHD's advantage is update cadence (every 8 months vs every 29 months). On ads and in-app purchases there is nothing between them.

CloudLabs Solubility is free to download; iAltairHD costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iAltairHD ships an update every 8 months, CloudLabs Solubility every 29 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | iAltairHD | CloudLabs Solubility |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/ialtairhd/id413875670/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 29 months |
| Monetization | Paid | — |
| Size | 26 MB | 77 MB |
| Requires iOS | 15.4 | **9.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Schorn](https://appshunter.io/developer/291182088) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### iAltairHD

[App page](https://appshunter.io/ios/app/ialtairhd/id413875670)

Experience vintage computing with a simulated MITS Altair 8800. Explore classic operating systems like CP/M and MS-DOS, and run beloved software such as WordStar and Zork. This self-contained system offers a nostalgic look at early computing.

**Highlights:** MITS Altair 8800 simulation, CP/M 2, CP/M 3, CP/M 86, and MS-DOS 1.25 support, Includes WordStar, Zork, Eliza, and Basic, VT100 terminal emulation, Dropbox integration for backups, Multiple CPU support (8080, Z80, 8086)

**In-app purchases:** none


### CloudLabs Solubility

[App page](https://appshunter.io/ios/app/cloudlabs-solubility/id1596359210)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iAltairHD free?

iAltairHD costs $5.99, with no in-app purchases.

### Is CloudLabs Solubility free?

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

### Do iAltairHD or CloudLabs Solubility have ads?

Neither iAltairHD nor CloudLabs Solubility shows ads.

### Which is updated more often, iAltairHD or CloudLabs Solubility?

iAltairHD ships an update every 8 months, and CloudLabs Solubility every 29 months. Most recently, iAltairHD was updated on October 23, 2026 and CloudLabs Solubility on October 27, 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.*