# Readius vs Physics Labs

The clearest difference is ads: Readius at none against Physics Labs's shown. Physics Labs's advantage is update cadence (every 2 weeks vs every 2 months). 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.

Readius ships an update every 2 months, Physics Labs every 2 weeks. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Readius | Physics Labs |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 418 MB | 32 MB |
| Requires iOS | **14** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [Huseyin Aykut Uludag](https://appshunter.io/developer/1469165629) |

## What reviewers say

### Readius

[App page](https://appshunter.io/ios/app/readius/id6443592437)

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

**In-app purchases:** none


### Physics Labs

[App page](https://appshunter.io/ios/app/physics-labs/id6472849584)

This app uses your device's sensors to measure various physical quantities like acceleration, magnetic fields, and sound levels. View data in coordinates or scalar magnitude, and export it to Excel for analysis. It's a digital lab for your phone.

**Highlights:** Measure acceleration, magnetic fields, and sound levels, View data in X, Y, Z coordinates or scalar magnitude, Export sensor data to Excel for analysis, Eliminate gravity from acceleration measurements, Measure atmospheric pressure

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Readius free?

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

### Is Physics Labs free?

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

### Do Readius or Physics Labs have ads?

Physics Labs shows ads; Readius does not.

### Which is updated more often, Readius or Physics Labs?

Readius ships an update every 2 months, and Physics Labs every 2 weeks. Most recently, Readius was updated on October 14, 2026 and Physics Labs on October 16, 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.*