# One Touch Alarm Clock vs Atomic Clock PRO

The clearest difference is in-app purchases: One Touch Alarm Clock at none against Atomic Clock PRO's 2. One Touch Alarm Clock also leads on iOS requirement (12.3 vs 15.6). Atomic Clock PRO's advantage is review sentiment (73% vs 53%) and update cadence (every 3 months vs every 12 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month. One Touch Alarm Clock asks for nothing beyond the download.

Atomic Clock PRO holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 11K and 10K respectively. Written reviews point the same way: 53% of One Touch Alarm Clock's written reviews are positive against 73% of Atomic Clock PRO's.

One Touch Alarm Clock ships an update every 12 months, Atomic Clock PRO every 3 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | One Touch Alarm Clock | Atomic Clock PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (11K ratings)](https://appshunter.io/ios/app/one-touch-alarm-clock/id762027586/reviews) | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** |
| Number of ratings | **11K** | 10K |
| Positive reviews | 52.7% of reviews | **72.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 24 MB | 6 MB |
| Requires iOS | **12.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HANBUNCO, INC.](https://appshunter.io/developer/436677464) | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) |

## What reviewers say

### One Touch Alarm Clock

[App page](https://appshunter.io/ios/app/one-touch-alarm-clock/id762027586)

This intuitive alarm clock app allows you to set alarms in just two seconds with a unique analog clock interface. Customize your wake-up experience with your favorite music or preset sounds, and enjoy features like snooze, vibration, and fade-in alarms. It also includes a sleep timer for relaxing evenings.

**Highlights:** Set alarm in two seconds, Customizable music alarms, Snooze function, Vibration and fade-in options, Sleep timer, 12/24 hour format

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 👍 Reliable alarm
- 🎶 Good sleep sounds
- 💤 Gentle wake up

**What reviewers complain about**

- 🐛 Inconsistent alarm
- 🔋 Battery drain
- 📢 Loud ads
- 🔒 Doesn't work on silent mode

**Reported bugs**

- Alarm not going off
- Alarm canceling itself
- App freezing or crashing
- Unable to change alarm time

**Requested features**

- Ability to set multiple alarms
- Custom alarm sounds
- Vibrate-only option
- Ability to adjust alarm volume


### 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


## Frequently asked questions

### Is One Touch Alarm Clock free?

One Touch Alarm Clock is free to download, with no in-app purchases.

### Is Atomic Clock PRO free?

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

### Which has better reviews, One Touch Alarm Clock or Atomic Clock PRO?

Atomic Clock PRO is rated higher. One Touch Alarm Clock averages 4.5 out of 5 from 11K ratings, while Atomic Clock PRO averages 4.7 from 10K ratings.

### Do One Touch Alarm Clock or Atomic Clock PRO have ads?

Both One Touch Alarm Clock and Atomic Clock PRO show ads.

### Which is updated more often, One Touch Alarm Clock or Atomic Clock PRO?

One Touch Alarm Clock ships an update every 12 months, and Atomic Clock PRO every 3 months. Most recently, One Touch Alarm Clock was updated on October 1, 2026 and Atomic Clock PRO on October 1, 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.*