# Reader vs ChronoLog

The clearest difference is in-app purchases: Reader at none against ChronoLog's 2. ChronoLog's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. ChronoLog sells 2 one-off in-app purchases. Reader asks for nothing beyond the download.

## The numbers

| Metric | Reader | ChronoLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (204 ratings)](https://appshunter.io/ios/app/chronolog-watch-accuracy/id6452083510/reviews)** |
| Number of ratings | — | **204** |
| Positive reviews | — | 84.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Paid |
| Size | 2 MB | 49 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [小康 刘](https://appshunter.io/developer/438044743) | [tyler wood](https://appshunter.io/developer/1698739777) |

## What reviewers say

### Reader

[App page](https://appshunter.io/ios/app/reader-plain-text-ereader/id1021086856)

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

**In-app purchases:** none


### ChronoLog

[App page](https://appshunter.io/ios/app/chronolog-watch-accuracy/id6452083510)

This app provides professional-grade tools to track the accuracy of mechanical watches. It offers audio timegraphing, photo offset measurement, and tap timing, along with detailed analytics and atomic time synchronization for collectors and enthusiasts.

**Highlights:** Audio timegrapher for rate, beat error, and amplitude, Photo offset measurement against atomic time, Tap timing for quick offset logging, Track accuracy trends over time, Atomic time synchronization, Detailed performance graphs and analytics, Manage and organize watch collection

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $5.99 | one-time |
| Premium | $6.99 | one-time |


## Frequently asked questions

### Is Reader free?

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

### Is ChronoLog free?

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

### Do Reader or ChronoLog have ads?

Neither Reader nor ChronoLog shows ads.

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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.*