# Atomic Clock PRO vs What time is it?

The clearest difference is review sentiment: Atomic Clock PRO at 73% against What time is it?'s 0%. What time is it?'s advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, in-app purchases and monetization model 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 What time is it? sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Atomic Clock PRO ships an update every 3 months, What time is it? every 3 weeks. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Atomic Clock PRO | What time is it? |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** | — |
| Number of ratings | **10K** | — |
| Positive reviews | **72.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 5 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [Shinichi Ishizuka](https://appshunter.io/developer/490639079) |

## 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


### What time is it?

[App page](https://appshunter.io/ios/app/what-time-is-it-voice-clock/id6449352519)

This utility app allows users to check the current time and date by tapping or shaking their smartphone screen, even with their eyes closed. It offers customizable voice output, screen brightness adjustments, and unique animations. Ads can be removed via an in-app purchase.

**Highlights:** Tap or shake to hear time and date, Customizable voice output, Screen brightness settings, Menu lock feature, Unlockable animations, 24-hour format support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.29 | one-time |


## Frequently asked questions

### Is Atomic Clock PRO free?

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

### Is What time is it? free?

What time is it? is free to download, with in-app purchases available.

### Do Atomic Clock PRO or What time is it? have ads?

Both Atomic Clock PRO and What time is it? show ads.

### Which is updated more often, Atomic Clock PRO or What time is it??

Atomic Clock PRO ships an update every 3 months, and What time is it? every 3 weeks. Most recently, Atomic Clock PRO was updated on September 25, 2026 and What time is it? on September 17, 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.*