# Horology vs Flip Clock

The clearest difference is in-app purchases: Horology at none against Flip Clock's 1. Horology also leads on update cadence (fortnightly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Flip Clock sells 1 one-off in-app purchase. Horology asks for nothing beyond the download.

Horology ships an update fortnightly, Flip Clock monthly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Horology | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/horology-keeping-time/id6746370188/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 1 MB | 3 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Interactive Applications LLC](https://appshunter.io/developer/951504132) | [磊 刘](https://appshunter.io/developer/1892400556) |

## What reviewers say

### Horology

[App page](https://appshunter.io/ios/app/horology-keeping-time/id6746370188)

A minimalist utility app for watch enthusiasts to precisely set mechanical timepieces. It offers advanced features like planetary animations and lunar phase tracking.

**Highlights:** Precise mechanical watch setting, Orbit-based planetary animations, Lunar phase tracking, Minimalist interface, Timekeeping utility

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

**In-app purchases:** none


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-timer-and-focus/id6767742797)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimpleClock Pro Edition | $2.99 | one-time |


## Frequently asked questions

### Is Horology free?

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

### Is Flip Clock free?

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

### Do Horology or Flip Clock have ads?

Neither Horology nor Flip Clock shows ads.

### Which is updated more often, Horology or Flip Clock?

Horology ships an update fortnightly, and Flip Clock monthly. Most recently, Horology was updated on October 24, 2026 and Flip Clock on October 31, 2026.

---

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