# Atomic Clock PRO vs Good Time

The clearest difference is in-app purchases: Good Time at none against Atomic Clock PRO's 2. Good Time also leads on ads (none vs shown) and update cadence (every 3 days vs every 4 months). Atomic Clock PRO's advantage is ratings volume (10K vs 12) and device support (3 vs 1). On price there is nothing between them.

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

Good Time holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 12, so its average is the more settled of the two.

Atomic Clock PRO ships an update every 4 months, Good Time every 3 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Atomic Clock PRO | Good Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/good-time-set-your-watch/id6782418450/reviews)** |
| Number of ratings | **10K** | 12 |
| Positive reviews | 72.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 9 MB |
| Requires iOS | **15.6** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [Jonathan Cho](https://appshunter.io/developer/1896678883) |

## What reviewers say

### Atomic Clock PRO

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

This app provides highly accurate time by syncing with official atomic clock servers. Customize your display with digital or analog views, personal backgrounds, and adjustable sizes. It's perfect for precise timekeeping, travel, or as a personalized desk clock.

**Highlights:** Atomic clock time synchronization, Digital and analog display options, Customizable backgrounds, Adjustable clock size, Automatic time zone recognition, Screen always on option

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


### Good Time

[App page](https://appshunter.io/ios/app/good-time-set-your-watch/id6782418450)

Precisely set your mechanical watch to the exact second using an analog dial with a sub-second-accurate sweep hand. Features include a stopwatch controllable by volume buttons, world time for over 2,000 cities, and multiple dial designs. It operates entirely on-device with no ads or tracking.

**Highlights:** Sub-second accurate sweep hand, Volume button stopwatch control, World time with GMT offset, Multiple dial designs, On-device operation

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

**In-app purchases:** none


## Frequently asked questions

### Is Atomic Clock PRO free?

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

### Is Good Time free?

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

### Which has better reviews, Atomic Clock PRO or Good Time?

Good Time is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while Good Time averages 5.0 from 12 ratings.

### Do Atomic Clock PRO or Good Time have ads?

Atomic Clock PRO shows ads; Good Time does not.

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

Atomic Clock PRO ships an update every 4 months, and Good Time every 3 days. Most recently, Atomic Clock PRO was updated on November 11, 2026 and Good Time 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.*