# Atomic Clock PRO vs AOD Clock

The clearest difference is review sentiment: Atomic Clock PRO at 73% against AOD Clock's 9%. Atomic Clock PRO also leads on rating (4.7 vs 2.4) and ratings volume (10K vs 32). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month and AOD Clock sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Atomic Clock PRO holds the better App Store score, 4.7 against 2.4. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 32, so its average is the more settled of the two. Written reviews point the same way: 73% of Atomic Clock PRO's written reviews are positive against 9% of AOD Clock's.

Atomic Clock PRO ships an update every 3 months, AOD Clock every 2 months. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Atomic Clock PRO | AOD Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** | [2.4 (32 ratings)](https://appshunter.io/ios/app/aod-clock-always-on-display/id1519935762/reviews) |
| Number of ratings | **10K** | 32 |
| Positive reviews | **73.0% of reviews** | 9.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 190 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [Kevin Ghori](https://appshunter.io/developer/1639082610) |

## What reviewers say

### Atomic Clock PRO

[App page](https://appshunter.io/ios/app/atomic-clock-pro/id899090224)

Get the most accurate time from an official atomic clock server. This app automatically detects your time zone and allows custom backgrounds. Easily switch between digital and analog clock displays with a swipe.

**Highlights:** Exact time from atomic clock, Automatic time zone recognition, Customizable background images, Digital and analog clock modes, Optional sound alerts, Color customization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Remove Ads | $5.99 | one-time |

**What reviewers like**

- ⭐ Accurate time display
- 📟 Useful for timing events
- 🕰️ Helpful for setting other clocks
- 🔍 Large, easy-to-read clock face

**What reviewers complain about**

- 💸 Subscription model for ad-free version
- 📢 Excessive advertisements
- 🔍 Small font for seconds display
- 🔀 Difficulty in displaying both analog and digital clocks simultaneously

**Reported bugs**

- Second hand occasionally runs in reverse
- Digital clock display cuts off on some devices
- Inconsistent behavior when switching between clock types

**Requested features**

- Customizable clock face options
- Ability to set widget on home screen
- Sync with system clock to automatically update time


### AOD Clock

[App page](https://appshunter.io/ios/app/aod-clock-always-on-display/id1519935762)

Keep your phone's screen on with a stylish clock. Display the time, date, day, and battery percentage without unlocking your device. Customize themes, backgrounds, fonts, and add icons for a personalized look.

**Highlights:** Always-on display with clock, Shows date, day, and battery, Customizable clock themes, Background and font color options, Add icons to display, Alarm setting with snooze

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Always on Display Weekly Plan | $4.99 | per 7 days |
| Always on Display Monthly Plan | $9.99 | per month |
| Always on Display Yearly Plan | $49.99 | per year |


## Frequently asked questions

### Is Atomic Clock PRO free?

Atomic Clock PRO is free to download, with in-app purchases available.

### Is AOD Clock free?

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

### Which has better reviews, Atomic Clock PRO or AOD Clock?

Atomic Clock PRO is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while AOD Clock averages 2.4 from 32 ratings.

### Do Atomic Clock PRO or AOD Clock have ads?

Both Atomic Clock PRO and AOD Clock show ads.

### Which is updated more often, Atomic Clock PRO or AOD Clock?

Atomic Clock PRO ships an update every 3 months, and AOD Clock every 2 months. Most recently, Atomic Clock PRO was updated on October 18, 2026 and AOD Clock on October 14, 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.*