iAltairHD vs CloudLabs Solubility
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iAltairHD
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.
- 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)
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iAltairHD pretends to be a MITS Altair 8800 computer and gives you a glimpse how old operating systems like CP/M 2 have felt. It is fully loaded with software but please note that the system is completely self contained and this means that you cannot remotely add any code. If you want to play a classic text based adventure game such as Zork, talk to Eliza, play Startrek, do a little bit of WordStar or create a little program in Basic or TurboPascal, iAltairHD is for you. The iAltairHD computer supports - 8080, Z80 and 8086 CPU - Basic VT100 terminal emulation for full screen editors and games - CPU speed throttling for classic terminal games - Dropbox integration for disk backup The following software is included: - Altair Basic (4k and 8k) and Altair DOS - CP/M 2 with Basic, Pascal MT+, Prolog, TurboPascal, WordStar, VEDIT screen editor, Multiplan, dBASE II, a collection of classic Basic games and text based adventures - CP/M 3 with the possibility to exchange data between CP/M 2 and CP/M 3 - CP/M 86 with VEDIT and Pascal MT+ 86 - MS-DOS 1.25 with Basic-86 and Perfect Writer
CloudLabs Solubility
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In this practice, a solution must be prepared based on the solubility of potassium nitrate, and the maximum amount that can be added to a tank must be determined, so that the solution is saturated. The simulator recreates a chemistry laboratory with a volumetric balloon, a pot with potassium nitrate, an Erlenmeyer flask, a watch glass, a filter funnel, a thermometer, and a lighter, among other necessary elements.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 14, 2026 respectively.
| Parameter | iAltairHD | CloudLabs Solubility |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 8 months — better | Every 29 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.4 | 9.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Schorn | Jiovany Orozco |
In-app purchases
iAltairHD
No in-app purchases
CloudLabs Solubility
No in-app purchases
Questions
Is iAltairHD free?
Is CloudLabs Solubility free?
Do iAltairHD or CloudLabs Solubility have ads?
Which is updated more often, iAltairHD or CloudLabs Solubility?
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