# tejouri vs Oscillo

The clearest difference is update cadence: Oscillo at weekly against tejouri's monthly. tejouri's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. tejouri sells 8 one-off in-app purchases and Oscillo sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

tejouri ships an update monthly, Oscillo weekly. The most recent releases landed on August 26, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | tejouri | Oscillo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (22 ratings)](https://appshunter.io/ios/app/oscillo-watch-accuracy-meter/id6759264433/reviews)** |
| Number of ratings | — | **22** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 59 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | +4 |
| Developer | [DIFC Courts](https://appshunter.io/developer/1405001531) | [Attila Halasz](https://appshunter.io/developer/790905891) |

## What reviewers say

### tejouri

[App page](https://appshunter.io/ios/app/tejouri/id6473512657)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Testator Search 1 | $11.99 | one-time |
| Testator Search 2 | $22.99 | one-time |
| Testator Search 3 | $34.99 | one-time |
| Testator Search 4 | $45.99 | one-time |
| Testator Search 5 | $57.99 | one-time |
| Silver Plan | $176.99 | one-time |
| Gold Plan | $294.99 | one-time |
| Platinum Plan | $589.00 | one-time |


### 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 tejouri free?

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

### Is Oscillo free?

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

### Do tejouri or Oscillo have ads?

Neither tejouri nor Oscillo shows ads.

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

tejouri ships an update monthly, and Oscillo weekly. Most recently, tejouri was updated on August 26, 2026 and Oscillo on September 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.*