# Atom Structure vs DOST SIMATAR

The clearest difference is price: DOST SIMATAR at Free against Atom Structure's $1.99. DOST SIMATAR also leads on update cadence (weekly vs every 41 months). Atom Structure's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

DOST SIMATAR is free to download; Atom Structure costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Atom Structure ships an update every 41 months, DOST SIMATAR weekly. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Atom Structure | DOST SIMATAR |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Weekly** |
| Size | 232 MB | 289 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Atom Structure

[App page](https://appshunter.io/ios/app/atom-structure-edutech-era/id1637054844)

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

**In-app purchases:** none


### DOST SIMATAR

[App page](https://appshunter.io/ios/app/dost-simatar-matter/id6745665601)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Atom Structure free?

Atom Structure costs $1.99, with no in-app purchases.

### Is DOST SIMATAR free?

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

### Do Atom Structure or DOST SIMATAR have ads?

Neither Atom Structure nor DOST SIMATAR shows ads.

### Which is updated more often, Atom Structure or DOST SIMATAR?

Atom Structure ships an update every 41 months, and DOST SIMATAR weekly. Most recently, Atom Structure was updated on October 3, 2026 and DOST SIMATAR on October 10, 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.*