# WatchNotes Lite vs Physics Labs

The clearest difference is ads: WatchNotes Lite at none against Physics Labs's shown. WatchNotes Lite also leads on monetization model (free vs ad-supported) and iOS requirement (10.0 vs 15.6). Physics Labs's advantage is update cadence (every 2 weeks vs every 31 months). On price, review sentiment, 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.

WatchNotes Lite ships an update every 31 months, Physics Labs every 2 weeks. The most recent releases landed on October 6, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | WatchNotes Lite | Physics Labs |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 31 months | **Every 2 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 32 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Scott](https://appshunter.io/developer/1542422467) | [Huseyin Aykut Uludag](https://appshunter.io/developer/1469165629) |

## What reviewers say

### WatchNotes Lite

[App page](https://appshunter.io/ios/app/watchnotes-lite/id1575147576)

A simple utility for creating and organizing notes directly on your smartwatch. Easily reorder your entries with drag-and-drop functionality. This streamlined version allows for up to three notes.

**Highlights:** Standalone watch notes, Drag-and-drop reordering, Limited to 3 notes, Supports watch, iPhone, and iPod

**Features:** Apple Watch app

**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 WatchNotes Lite free?

WatchNotes Lite 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 WatchNotes Lite or Physics Labs have ads?

Physics Labs shows ads; WatchNotes Lite does not.

### Which is updated more often, WatchNotes Lite or Physics Labs?

WatchNotes Lite ships an update every 31 months, and Physics Labs every 2 weeks. Most recently, WatchNotes Lite was updated on October 6, 2026 and Physics Labs on September 18, 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.*