# Clock Wave vs Twelve O'clock

The clearest difference is price: Twelve O'clock at Free against Clock Wave's $1.99. Twelve O'clock also leads on update cadence (every 3 weeks vs every 2 months). Clock Wave's advantage is in-app purchases (none vs 1) and rating (4.7 vs 4.4). On review sentiment, ads and device support there is nothing between them.

Twelve O'clock is free to download; Clock Wave costs $1.99 up front. Twelve O'clock sells 1 one-off in-app purchase. Clock Wave asks for nothing beyond the download.

Clock Wave holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 248 and 82 respectively. Written reviews split almost evenly too, at 92% and 91% positive.

Clock Wave ships an update every 2 months, Twelve O'clock every 3 weeks. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Clock Wave | Twelve O'clock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (248 ratings)](https://appshunter.io/ios/app/clock-wave/id1073576068/reviews)** | [4.4 (82 ratings)](https://appshunter.io/ios/app/twelve-oclock/id1570977980/reviews) |
| Number of ratings | **248** | 82 |
| Positive reviews | **91.6% of reviews** | 91.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#84** | — |
| Size | 2 MB | 46 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [震 任](https://appshunter.io/developer/1073576067) | [Hieu Pham](https://appshunter.io/developer/1570977982) |

## What reviewers say

### Clock Wave

[App page](https://appshunter.io/ios/app/clock-wave/id1073576068)

**Currently charting:** #84 Top Paid · Utilities (US App Store)

Calibrate your radio-controlled watch or clock using your iPhone or iPad. Simply tap 'Transmit' and place your device near your watch to automatically sync the accurate time.

**Highlights:** Calibrate radio-controlled watches/clocks, Transmit accurate time automatically, Supports 5 major global time signal stations, Manual station selection for compatibility, Automatic time signal transmission

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works as advertised
- 👍 Easy to use
- 🚀 Syncs watches quickly
- 💡 Clever solution for remote areas
- 👍 Reliable and consistent

**What reviewers complain about**

- 🐛 Doesn't work for some watches
- 🐛 Inconsistent performance
- 🐛 Occasional crashes or failures

**Reported bugs**

- Incompatibility with certain iOS versions
- Incorrect time zone adjustments

**Requested features**

- Ability to transmit signal automatically
- Support for more watch brands/models
- Improved volume/signal strength control


### 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


## Frequently asked questions

### Is Clock Wave free?

Clock Wave costs $1.99, with no in-app purchases.

### Is Twelve O'clock free?

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

### Which has better reviews, Clock Wave or Twelve O'clock?

Clock Wave is rated higher. Clock Wave averages 4.7 out of 5 from 248 ratings, while Twelve O'clock averages 4.4 from 82 ratings.

### Do Clock Wave or Twelve O'clock have ads?

Neither Clock Wave nor Twelve O'clock shows ads.

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

Clock Wave ships an update every 2 months, and Twelve O'clock every 3 weeks. Most recently, Clock Wave was updated on September 29, 2026 and Twelve O'clock on September 26, 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.*