# CASIO WATCH+ vs Atomic Clock PRO

The clearest difference is review sentiment: Atomic Clock PRO at 73% against CASIO WATCH+'s 18%. Atomic Clock PRO also leads on rating (4.7 vs 2.9) and ratings volume (10K vs 44). CASIO WATCH+'s advantage is in-app purchases (none vs 2) and ads (none vs shown). On price 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. CASIO WATCH+ asks for nothing beyond the download.

Atomic Clock PRO holds the better App Store score, 4.7 against 2.9. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 44, so its average is the more settled of the two. Written reviews point the same way: 18% of CASIO WATCH+'s written reviews are positive against 73% of Atomic Clock PRO's.

CASIO WATCH+ ships an update monthly, Atomic Clock PRO every 3 months. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CASIO WATCH+ | Atomic Clock PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (44 ratings)](https://appshunter.io/ios/app/casio-watch-plus/id760165998/reviews) | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** |
| Number of ratings | 44 | **10K** |
| Positive reviews | 17.7% of reviews | **73.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 69 MB | 6 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CASIO COMPUTER CO., LTD.](https://appshunter.io/developer/456569836) | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) |

## What reviewers say

### CASIO WATCH+

[App page](https://appshunter.io/ios/app/casio-watch-plus/id760165998)

Connect your compatible CASIO watch to your iPhone via Bluetooth to unlock enhanced Mobile Link functions. This application simplifies watch operations by allowing you to control them from your phone screen, enriching your overall experience.

**Highlights:** Bluetooth v4.0 connectivity, Mobile Link functions, Simplified watch operations, iPhone integration, Remote control via phone screen

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Works well with iPhone 6/6s
- 👍 Easy to use interface
- 👍 Able to sync watch settings
- 👍 Helpful support for clearing pairing info

**What reviewers complain about**

- 🐛 Connectivity issues with newer iPhones
- 🐛 App crashes frequently
- 🐛 Fails to connect to watch
- 🐛 Unreliable Bluetooth connection
- 🐛 Time/date sync problems

**Reported bugs**

- Compatibility issues with iOS updates
- Pairing problems with iPhone 6/6s/7
- Sync failures and connection drops
- Watch settings not transferring properly

**Requested features**

- Show watch battery status
- Add more world time cities
- Improve phone finder functionality
- Allow more control over alarms/timers


### 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 CASIO WATCH+ free?

CASIO WATCH+ 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, CASIO WATCH+ or Atomic Clock PRO?

Atomic Clock PRO is rated higher. CASIO WATCH+ averages 2.9 out of 5 from 44 ratings, while Atomic Clock PRO averages 4.7 from 10K ratings.

### Do CASIO WATCH+ or Atomic Clock PRO have ads?

Atomic Clock PRO shows ads; CASIO WATCH+ does not.

### Which is updated more often, CASIO WATCH+ or Atomic Clock PRO?

CASIO WATCH+ ships an update monthly, and Atomic Clock PRO every 3 months. Most recently, CASIO WATCH+ was updated on October 9, 2026 and Atomic Clock PRO 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.*