# Twelve O'clock vs PurgeShot

The clearest difference is in-app purchases: PurgeShot at none against Twelve O'clock's 1. Twelve O'clock's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Twelve O'clock sells 1 one-off in-app purchase. PurgeShot asks for nothing beyond the download.

Twelve O'clock ships an update every 3 weeks, PurgeShot every 3 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Twelve O'clock | PurgeShot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (83 ratings)](https://appshunter.io/ios/app/twelve-oclock/id1570977980/reviews)** | — |
| Number of ratings | **83** | — |
| Positive reviews | 91.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 19 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hieu Pham](https://appshunter.io/developer/1570977982) | [WEB REGISTER Ltd.](https://appshunter.io/developer/1896744097) |

## What reviewers say

### Twelve O'clock

[App page](https://appshunter.io/ios/app/twelve-oclock/id1570977980)

Easily track the accuracy of your mechanical watches over time. Manually log checkpoints to calculate seconds per day and visualize performance with charts. Manage your watch collection with photos and learn more about horology.

**Highlights:** Manage watch collection, Add/edit/remove watches, Include watch photos, Track watch accuracy, Calculate seconds per day, View accuracy charts, Horology content

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Twelve Plus | $1.99 | one-time |

**What reviewers like**

- 👍 Intuitive and simple user interface
- 💰 Excellent value at $0.99 one-time purchase
- 🎯 Accurate watch accuracy tracking
- ⏱️ Flexible checkpoint timing (0, 15, 30, 45 seconds)
- 📊 Clear data visualization and graphs

**What reviewers complain about**

- 🐛 App freezes and crashes frequently
- 💾 Data loss after updates
- ⚠️ Free version severely limited (5 checkpoints only)
- 🔔 Silent mode prevents beeping sounds
- 🎯 Requires learning curve for some users

**Reported bugs**

- App freezes at loading requiring phone restart
- Data deletion after app updates
- Data loss on app crash
- Graph display glitches after checkpoints
- Photo checkpoint feature returns 'old photo not supported' error

**Requested features**

- iCloud/cloud synchronization across devices
- Notifications or reminders for checkpoints
- Current time button on checkpoint screen
- Larger buttons for 15/30/45 second marks
- Power reserve tracking


### PurgeShot

[App page](https://appshunter.io/ios/app/purgeshot/id6778731035)

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

**In-app purchases:** none


## Frequently asked questions

### Is Twelve O'clock free?

Twelve O'clock is free to download, with in-app purchases available.

### Is PurgeShot free?

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

### Do Twelve O'clock or PurgeShot have ads?

Neither Twelve O'clock nor PurgeShot shows ads.

### Which is updated more often, Twelve O'clock or PurgeShot?

Twelve O'clock ships an update every 3 weeks, and PurgeShot every 3 months. Most recently, Twelve O'clock was updated on November 3, 2026 and PurgeShot on November 5, 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.*