Comparison

iAltairHD vs CloudLabs Solubility

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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)
Read full description

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

About

CloudLabs Solubility

Features
Read full description

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

CloudLabs Solubility1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
iAltairHD versus CloudLabs Solubility: the parameters behind the verdict, then further details
ParameteriAltairHDCloudLabs Solubility
Price$5.99Free — better
Rating5.0 (8 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 8 months — betterEvery 29 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS15.49.0 — better
Further details — not scored
Size26 MB77 MB
Age rating4+4+
DeveloperPeter SchornJiovany Orozco

In-app purchases

None

iAltairHD

No in-app purchases

None

CloudLabs Solubility

No in-app purchases

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 14, 2026.

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