# Mercopig vs Oscillo

The clearest difference is in-app purchases: Mercopig at none against Oscillo's 5. Mercopig also leads on iOS requirement (13.0 vs 26.0). Oscillo's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Oscillo sells 5 in-app purchases, starting at $6.99 per month. Mercopig asks for nothing beyond the download.

Mercopig ships an update every 5 weeks, Oscillo weekly. The most recent releases landed on October 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mercopig | Oscillo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (27 ratings)](https://appshunter.io/ios/app/oscillo-watch-accuracy-meter/id6759264433/reviews)** |
| Number of ratings | — | **27** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 75 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [BINEFAR COMERCIO ELECTRONICO S.L.](https://appshunter.io/developer/911061630) | [Attila Halasz](https://appshunter.io/developer/790905891) |

## What reviewers say

### Mercopig

[App page](https://appshunter.io/ios/app/mercopig/id1573608054)

**Features:** macOS Compatibility

**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 (5)**

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


## Frequently asked questions

### Is Mercopig free?

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

### Is Oscillo free?

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

### Do Mercopig or Oscillo have ads?

Neither Mercopig nor Oscillo shows ads.

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

Mercopig ships an update every 5 weeks, and Oscillo weekly. Most recently, Mercopig was updated on October 7, 2026 and Oscillo on October 31, 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.*