# Atomic Clock PRO vs Inflation Calculator USA

The clearest difference is ratings volume: Atomic Clock PRO at 10K against Inflation Calculator USA's 27. Inflation Calculator USA's advantage is rating (4.9 vs 4.7) and update cadence (every 6 weeks vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month and Inflation Calculator USA sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Inflation Calculator USA holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 27, so its average is the more settled of the two.

Atomic Clock PRO ships an update every 3 months, Inflation Calculator USA every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Atomic Clock PRO | Inflation Calculator USA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews) | **[4.9 (27 ratings)](https://appshunter.io/ios/app/inflation-calculator-usa/id6744275657/reviews)** |
| Number of ratings | **10K** | 27 |
| Positive reviews | 73.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 35 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [Arlyn Technology LLC](https://appshunter.io/developer/1521390281) |

## What reviewers say

### 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


### Inflation Calculator USA

[App page](https://appshunter.io/ios/app/inflation-calculator-usa/id6744275657)

Understand the impact of inflation on your money. This app uses official U.S. Bureau of Labor Statistics data to provide accurate inflation calculations for any dollar amount between 1913 and 2026.

**Highlights:** Accurate inflation calculations, Uses official U.S. data, Covers years 1913-2026, Calculates for any dollar amount, Updated with new data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Atomic Clock PRO free?

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

### Is Inflation Calculator USA free?

Inflation Calculator USA is free to download, with in-app purchases available.

### Which has better reviews, Atomic Clock PRO or Inflation Calculator USA?

Inflation Calculator USA is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while Inflation Calculator USA averages 4.9 from 27 ratings.

### Do Atomic Clock PRO or Inflation Calculator USA have ads?

Both Atomic Clock PRO and Inflation Calculator USA show ads.

### Which is updated more often, Atomic Clock PRO or Inflation Calculator USA?

Atomic Clock PRO ships an update every 3 months, and Inflation Calculator USA every 6 weeks. Most recently, Atomic Clock PRO was updated on October 27, 2026 and Inflation Calculator USA on October 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.*