# GrandS vs Chemlab

The clearest difference is update cadence: GrandS at every 8 days against Chemlab's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. GrandS sells 2 one-off in-app purchases and Chemlab sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

GrandS ships an update every 8 days, Chemlab monthly. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | GrandS | Chemlab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Monthly |
| Size | 108 MB | 9 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Revaz Chkheidze](https://appshunter.io/developer/1895383564) | [Volodumur Kolosovskiy](https://appshunter.io/developer/6791622341) |

## What reviewers say

### GrandS

[App page](https://appshunter.io/ios/app/grands/id6763577462)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Royalblue | $1.99 | one-time |
| Premium Theme Imperialblack | $1.99 | one-time |


### Chemlab

[App page](https://appshunter.io/ios/app/chemlab/id6791622339)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Chemist Unlimited | $1.99 | one-time |
| Experiments Pack | $1.99 | one-time |


## Frequently asked questions

### Is GrandS free?

GrandS is free to download, with in-app purchases available.

### Is Chemlab free?

Chemlab is free to download, with in-app purchases available.

### Do GrandS or Chemlab have ads?

Neither GrandS nor Chemlab shows ads.

### Which is updated more often, GrandS or Chemlab?

GrandS ships an update every 8 days, and Chemlab monthly. Most recently, GrandS was updated on October 1, 2026 and Chemlab on October 11, 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.*