# AtomicClock vs TrueOffset

The clearest difference is in-app purchases: TrueOffset at none against AtomicClock's 1. TrueOffset also leads on ads (none vs shown). AtomicClock's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. AtomicClock sells 1 one-off in-app purchase. TrueOffset asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 2, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | AtomicClock | TrueOffset |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.5K ratings)](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews)** | — |
| Number of ratings | **5.5K** | — |
| Positive reviews | 84.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 2 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Timo Partl](https://appshunter.io/developer/1387413672) | [Richard Bollar](https://appshunter.io/developer/1864304955) |

## What reviewers say

### AtomicClock

[App page](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049)

This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.

**Highlights:** Precise time from NTP servers, Customizable clock faces, Select or add time servers, Local and UTC views, 12/24 hour modes, Customizable time format, Acoustic ticking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro Version | $6.99 | one-time |

**What reviewers like**

- 🚀 Accurate time
- 👍 Highly customizable
- 🚀 Precise to the second
- 👍 Easy to use
- 👍 Helpful for setting watches

**What reviewers complain about**

- 🐛 Server connection issues
- 🔍 Limited time zone options
- 💰 Ads diminish clock view
- 🔍 Lacks some advanced features
- 🔍 Redundant for some users

**Reported bugs**

- Crashes on certain iOS versions
- Occasional freezing of hands
- Countdown timer sound not working

**Requested features**

- Add GMT/dual time display
- Implement widget support
- Add different second hand sounds
- Allow setting background color to match watch
- Include alarm/timer functionality


### TrueOffset

[App page](https://appshunter.io/ios/app/trueoffset/id6757518499)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AtomicClock free?

AtomicClock is free to download, with in-app purchases available.

### Is TrueOffset free?

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

### Do AtomicClock or TrueOffset have ads?

AtomicClock shows ads; TrueOffset does not.

### Which is updated more often, AtomicClock or TrueOffset?

AtomicClock ships an update every 3 weeks, and TrueOffset every 3 weeks. Most recently, AtomicClock was updated on October 2, 2026 and TrueOffset on September 20, 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.*