# Quarked! Mass Matters vs Owlet

The clearest difference is update cadence: Owlet at every 5 months against Quarked! Mass Matters's every 49 months. Quarked! Mass Matters's advantage is iOS requirement (10.0 vs 12.0). 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.

Quarked! Mass Matters ships an update every 49 months, Owlet every 5 months. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Quarked! Mass Matters | Owlet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quarked-mass-matters/id1224737112/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 73 MB | 123 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [The University of Kansas](https://appshunter.io/developer/726307325) | [BirdBrain Technologies LLC](https://appshunter.io/developer/1012525349) |

## What reviewers say

### Quarked! Mass Matters

[App page](https://appshunter.io/ios/app/quarked-mass-matters/id1224737112)

Engage in a physics-based adventure to discover particle mass by shooting them through the Higgs field. Then, explore underwater challenges involving density, time limits, and avoiding sea creatures.

**Highlights:** Particle mass determination, Higgs field interaction, Underwater density challenges, Time-based gameplay, Sea creature avoidance

**Features:** macOS Compatibility

**In-app purchases:** none


### Owlet

[App page](https://appshunter.io/ios/app/owlet-cube6/id1540127271)

**In-app purchases:** none


## Frequently asked questions

### Is Quarked! Mass Matters free?

Quarked! Mass Matters is free to download, with no in-app purchases.

### Is Owlet free?

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

### Do Quarked! Mass Matters or Owlet have ads?

Neither Quarked! Mass Matters nor Owlet shows ads.

### Which is updated more often, Quarked! Mass Matters or Owlet?

Quarked! Mass Matters ships an update every 49 months, and Owlet every 5 months. Most recently, Quarked! Mass Matters was updated on October 23, 2026 and Owlet on October 6, 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.*