# Atomic Clock (Gorgy Timing) vs Alarm Clock HD

The clearest difference is review sentiment: Atomic Clock (Gorgy Timing) at 91% against Alarm Clock HD's 32%. Atomic Clock (Gorgy Timing) also leads on ads (none vs shown) and rating (4.8 vs 4.5). Alarm Clock HD's advantage is price (Free vs $1.99) and update cadence (fortnightly vs every 4 months). On in-app purchases and monetization model there is nothing between them.

Alarm Clock HD is free to download; Atomic Clock (Gorgy Timing) costs $1.99 up front. Atomic Clock (Gorgy Timing) sells 5 one-off in-app purchases and Alarm Clock HD sells 10 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.

Atomic Clock (Gorgy Timing) holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Alarm Clock HD has 104K ratings behind it against 5K, so its average is the more settled of the two. Written reviews point the same way: 91% of Atomic Clock (Gorgy Timing)'s written reviews are positive against 32% of Alarm Clock HD's.

Atomic Clock (Gorgy Timing) ships an update every 4 months, Alarm Clock HD fortnightly. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Atomic Clock (Gorgy Timing) | Alarm Clock HD |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (5K ratings)](https://appshunter.io/ios/app/atomic-clock-gorgy-timing/id295302256/reviews)** | [4.5 (104K ratings)](https://appshunter.io/ios/app/alarm-clock-hd/id476555713/reviews) |
| Number of ratings | 5K | **104K** |
| Positive reviews | **90.5% of reviews** | 32.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 15 MB | 230 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CompuLab, Markus Gömmel](https://appshunter.io/developer/295302259) | [Impala Studios](https://appshunter.io/developer/1063279743) |

## What reviewers say

### Atomic Clock (Gorgy Timing)

[App page](https://appshunter.io/ios/app/atomic-clock-gorgy-timing/id295302256)

This app provides ultra-precise time by syncing with atomic time servers. It features a customizable display mimicking professional studio clocks, with advanced alarm functions and various visual themes. Designed for accuracy and usability, it's ideal for professionals and enthusiasts alike.

**Highlights:** Syncs with atomic time servers, Professional studio clock display, Customizable alarm with snooze, Local time / UTC mode, Multiple color themes, Night mode for dimming, Disabled screen auto-lock

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nice job | $0.99 | one-time |
| Good work. | $2.99 | one-time |
| Great app! | $3.99 | one-time |
| Awesome idea! | $8.99 | one-time |
| I totally love it! | $17.99 | one-time |


### Alarm Clock HD

[App page](https://appshunter.io/ios/app/alarm-clock-hd/id476555713)

Wake up gently with your favorite music or sounds using this advanced alarm clock. It offers customizable nightstand displays, sleep tracking, and a sleep timer to help you unwind. Enjoy features like local weather and an instant flashlight, with an option to go ad-free via subscription.

**Highlights:** Unlimited alarms with Apple Music or custom sounds, Sleep tracking, Customizable nightstand display, Sleep timer, Local weather information, Instant flashlight, Screen saver for OLED displays

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium member - 1 month | $1.49 | per month |
| Premium Features - Weekly | $1.99 | per 7 days |
| Premium Features - Monthly | $2.59 | per month |
| Upgrade to Premium Features | $5.49 | per 6 months |
| Premium Yearly | $9.99 | per year |
| Premium Yearly | $11.99 | per year |
| Upgrade Your Alarm Clock | $14.99 | per year |
| Premium yearly | $19.99 | per year |
| Premium yearly | $19.99 | per year |
| Premium yearly | $24.99 | per year |

**What reviewers like**

- 🚀 Reliable alarm clock
- 🎨 Customizable colors
- 🔊 Ability to use music as alarm
- 💤 Gradual volume increase

**What reviewers complain about**

- 🐛 Alarm not going off
- 🔍 Difficulty seeing small buttons/text
- 💸 Subscription model for ad-free version
- 🔋 High battery consumption
- 🔇 Alarm muting phone volume

**Reported bugs**

- Alarm randomly snoozing itself
- Alarm not working when phone is muted
- Alarm sound not playing
- Alarm screen freezing/crashing

**Requested features**

- 24-hour clock option
- More alarm sounds/tones
- Ability to use own music files
- Do not disturb mode


## Frequently asked questions

### Is Atomic Clock (Gorgy Timing) free?

Atomic Clock (Gorgy Timing) costs $1.99, and also offers in-app purchases.

### Is Alarm Clock HD free?

Alarm Clock HD is free to download, with in-app purchases available.

### Which has better reviews, Atomic Clock (Gorgy Timing) or Alarm Clock HD?

Atomic Clock (Gorgy Timing) is rated higher. Atomic Clock (Gorgy Timing) averages 4.8 out of 5 from 5K ratings, while Alarm Clock HD averages 4.5 from 104K ratings.

### Do Atomic Clock (Gorgy Timing) or Alarm Clock HD have ads?

Alarm Clock HD shows ads; Atomic Clock (Gorgy Timing) does not.

### Which is updated more often, Atomic Clock (Gorgy Timing) or Alarm Clock HD?

Atomic Clock (Gorgy Timing) ships an update every 4 months, and Alarm Clock HD fortnightly. Most recently, Atomic Clock (Gorgy Timing) was updated on September 23, 2026 and Alarm Clock HD on September 24, 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.*