# MarkChem vs CERA StarMason

The clearest difference is update cadence: MarkChem at every 3 weeks against CERA StarMason's every 4 months. CERA StarMason's advantage is iOS requirement (13.0 vs 15.6). 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.

MarkChem ships an update every 3 weeks, CERA StarMason every 4 months. The most recent releases landed on September 8, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | MarkChem | CERA StarMason |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 36 MB | 38 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shobhit Gupta](https://appshunter.io/developer/1532902469) | [EVOLVE BRANDS PRIVATE LIMITED](https://appshunter.io/developer/1678666095) |

## What reviewers say

### MarkChem

[App page](https://appshunter.io/ios/app/markchem/id1532902467)

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

**In-app purchases:** none


### CERA StarMason

[App page](https://appshunter.io/ios/app/cera-starmason/id6502587740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MarkChem free?

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

### Is CERA StarMason free?

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

### Do MarkChem or CERA StarMason have ads?

Neither MarkChem nor CERA StarMason shows ads.

### Which is updated more often, MarkChem or CERA StarMason?

MarkChem ships an update every 3 weeks, and CERA StarMason every 4 months. Most recently, MarkChem was updated on September 8, 2026 and CERA StarMason on September 23, 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.*