# WatchWatcher vs Oscillo

The clearest difference is price: Oscillo at Free against WatchWatcher's $1.99. Oscillo also leads on update cadence (weekly vs every 9 months). WatchWatcher's advantage is in-app purchases (none vs 4) and iOS requirement (18.2 vs 26.0). On ads and device support there is nothing between them.

Oscillo is free to download; WatchWatcher costs $1.99 up front. Oscillo sells 4 in-app purchases, starting at $6.99 per month. WatchWatcher asks for nothing beyond the download.

WatchWatcher ships an update every 9 months, Oscillo weekly. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WatchWatcher | Oscillo |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.8 (25 ratings)](https://appshunter.io/ios/app/oscillo-watch-accuracy-meter/id6759264433/reviews)** |
| Number of ratings | — | **25** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 63 MB |
| Requires iOS | **18.2** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [silas slack](https://appshunter.io/developer/410593289) | [Attila Halasz](https://appshunter.io/developer/790905891) |

## What reviewers say

### WatchWatcher

[App page](https://appshunter.io/ios/app/watchwatcher-accuracy-tracker/id6742189328)

**In-app purchases:** none


### Oscillo

[App page](https://appshunter.io/ios/app/oscillo-watch-accuracy-meter/id6759264433)

This app uses your iPhone's microphone to measure the rate, beat error, and amplitude of mechanical watches. It also identifies watch models, manages your collection with AI-generated portraits, and tracks performance over time. Get detailed reports and reminders to maintain your timepieces.

**Highlights:** Measure watch rate, beat error, and amplitude, AI watch identification and model detection, AI-generated watch portraits for collection, Collection management and organization, Detailed measurement history and trends, Precision tracking and multi-day cycles, Weekly watch reports and profile insights

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oscillo Pro Monthly | $6.99 | per month |
| Oscillo Pro Annual | $29.99 | per year |
| Founder's Lifetime | $49.99 | one-time |
| Oscillo Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is WatchWatcher free?

WatchWatcher costs $1.99, with no in-app purchases.

### Is Oscillo free?

Oscillo is free to download, with in-app purchases available.

### Do WatchWatcher or Oscillo have ads?

Neither WatchWatcher nor Oscillo shows ads.

### Which is updated more often, WatchWatcher or Oscillo?

WatchWatcher ships an update every 9 months, and Oscillo weekly. Most recently, WatchWatcher was updated on October 9, 2026 and Oscillo on October 11, 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.*