# Watch Spring vs Oscillo

The clearest difference is price: Oscillo at Free against Watch Spring's $3.99. Oscillo also leads on ratings volume (25 vs 3) and update cadence (weekly vs fortnightly). Watch Spring's advantage is in-app purchases (none vs 4) and rating (5.0 vs 4.8). On ads, device support and iOS requirement there is nothing between them.

Oscillo is free to download; Watch Spring costs $3.99 up front. Oscillo sells 4 in-app purchases, starting at $6.99 per month. Watch Spring asks for nothing beyond the download.

Watch Spring holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Oscillo has 25 ratings behind it against 3, so its average is the more settled of the two.

Watch Spring ships an update fortnightly, Oscillo weekly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Watch Spring | Oscillo |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/watch-spring/id1617113233/reviews)** | [4.8 (25 ratings)](https://appshunter.io/ios/app/oscillo-watch-accuracy-meter/id6759264433/reviews) |
| Number of ratings | 3 | **25** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 63 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | +4 | +4 |
| Developer | [Simon Greig](https://appshunter.io/developer/562988756) | [Attila Halasz](https://appshunter.io/developer/790905891) |

## What reviewers say

### Watch Spring

[App page](https://appshunter.io/ios/app/watch-spring/id1617113233)

Track the accuracy and wear of your mechanical watches. Analyze trends with charts, log service history, and keep notes on watch details. See how your collection performs over time and manage your ownership history.

**Highlights:** Accuracy tracking and trend charts, Wear calendar and statistics, Watch collection summary cards, Service and repair logging, Ownership history timeline, Time-setting clock, CSV import/export

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

**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 Watch Spring free?

Watch Spring costs $3.99, with no in-app purchases.

### Is Oscillo free?

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

### Which has better reviews, Watch Spring or Oscillo?

Watch Spring is rated higher. Watch Spring averages 5.0 out of 5 from 3 ratings, while Oscillo averages 4.8 from 25 ratings.

### Do Watch Spring or Oscillo have ads?

Neither Watch Spring nor Oscillo shows ads.

### Which is updated more often, Watch Spring or Oscillo?

Watch Spring ships an update fortnightly, and Oscillo weekly. Most recently, Watch Spring was updated on October 14, 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.*