# Chronometer and Countdown HD vs Atomic Clock PRO

The clearest difference is review sentiment: Atomic Clock PRO at 73% against Chronometer and Countdown HD's 0%. Atomic Clock PRO also leads on price (Free vs $0.99) and rating (4.7 vs 2.0). Chronometer and Countdown HD's advantage is in-app purchases (none vs 2) and ads (none vs shown).

Atomic Clock PRO is free to download; Chronometer and Countdown HD costs $0.99 up front. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month. Chronometer and Countdown HD asks for nothing beyond the download.

Atomic Clock PRO holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Chronometer and Countdown HD's written reviews are positive against 73% of Atomic Clock PRO's.

Chronometer and Countdown HD ships an update every 42 months, Atomic Clock PRO every 3 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chronometer and Countdown HD | Atomic Clock PRO |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/chronometer-and-countdown-hd/id380855822/reviews) | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** |
| Number of ratings | 1 | **10K** |
| Positive reviews | 0.0% of reviews | **73.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 42 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 6 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gianluca Natalini](https://appshunter.io/developer/348380792) | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) |

## What reviewers say

### Chronometer and Countdown HD

[App page](https://appshunter.io/ios/app/chronometer-and-countdown-hd/id380855822)

This utility app transforms your iPad into a versatile multi-stopwatch and multi-countdown timer. It's ideal for timing sporting events, athletic training, or motor racing, allowing simultaneous use of multiple timers and lap measurements.

**Highlights:** 4 independent stopwatches, Lap timing for up to 8 events, 4 independent countdown timers, Adjustable countdown times, Synchronization buttons, Background operation

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Chronometer and Countdown HD free?

Chronometer and Countdown HD costs $0.99, 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, Chronometer and Countdown HD or Atomic Clock PRO?

Atomic Clock PRO is rated higher. Chronometer and Countdown HD averages 2.0 out of 5 from 1 ratings, while Atomic Clock PRO averages 4.7 from 10K ratings.

### Do Chronometer and Countdown HD or Atomic Clock PRO have ads?

Atomic Clock PRO shows ads; Chronometer and Countdown HD does not.

### Which is updated more often, Chronometer and Countdown HD or Atomic Clock PRO?

Chronometer and Countdown HD ships an update every 42 months, and Atomic Clock PRO every 3 months. Most recently, Chronometer and Countdown HD was updated on October 18, 2026 and Atomic Clock PRO on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*