# Quark vs OBAdm

The clearest difference is ads: OBAdm at none against Quark's shown. OBAdm also leads on update cadence (every 2 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Quark ships an update every 5 weeks, OBAdm every 2 days. Both last shipped on September 10, 2026.

## The numbers

| Metric | Quark | OBAdm |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | — | Free |
| Size | 39 MB | 195 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [HAPPEN DESENVOLVIMENTO DE SOFTWARE TREINAMENTO E CURSOS LTDA](https://appshunter.io/developer/1610958566) | [MOBTEX DESENVOLVIMENTO DE SOFTWARE EIRELI](https://appshunter.io/developer/1532814117) |

## What reviewers say

### Quark

[App page](https://appshunter.io/ios/app/quark/id1610958564)

**Features:** macOS Compatibility

**In-app purchases:** none


### OBAdm

[App page](https://appshunter.io/ios/app/obadm/id6503164155)

This app provides online tests and an e-book for students and schools participating in OBAdm. It also features the 'Jogo Floresta Bela' game.

**Highlights:** Online tests, Jogo Floresta Bela game, E-book access, Exclusive for OBAdm participants

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

**In-app purchases:** none


## Frequently asked questions

### Is Quark free?

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

### Is OBAdm free?

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

### Do Quark or OBAdm have ads?

Quark shows ads; OBAdm does not.

### Which is updated more often, Quark or OBAdm?

Quark ships an update every 5 weeks, and OBAdm every 2 days. Most recently, Quark was updated on September 10, 2026 and OBAdm on September 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.*