# Ring Sizer Pro vs Always on Display Clock

The clearest difference is price: Always on Display Clock at Free against Ring Sizer Pro's $1.99. Always on Display Clock also leads on update cadence (every 2 days vs every 4 months). Ring Sizer Pro's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 26.1). On ads and device support there is nothing between them.

Always on Display Clock is free to download; Ring Sizer Pro costs $1.99 up front. Always on Display Clock sells 1 one-off in-app purchase. Ring Sizer Pro asks for nothing beyond the download.

Ring Sizer Pro ships an update every 4 months, Always on Display Clock every 2 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Ring Sizer Pro | Always on Display Clock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/ring-sizer-pro/id1064173293/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 2 MB | 23 MB |
| Requires iOS | **15.6** | 26.1 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Melnikov](https://appshunter.io/developer/398340766) | [Ajul Raj](https://appshunter.io/developer/1733658359) |

## What reviewers say

### Ring Sizer Pro

[App page](https://appshunter.io/ios/app/ring-sizer-pro/id1064173293)

Accurately determine jewelry ring sizes using metric or imperial units. Supports multiple international sizing systems and offers visual guides for precise measurement. Easily share your ring size via email or social media.

**Highlights:** Metric and imperial units, Diameter or circumference measurement, Visual guides for precision, Share ring size easily, Multiple international sizing systems, Wide size range support

**Features:** Apple Watch app

**In-app purchases:** none


### Always on Display Clock

[App page](https://appshunter.io/ios/app/always-on-display-clock/id6817448372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AOD Clocks Pro | $4.99 | one-time |


## Frequently asked questions

### Is Ring Sizer Pro free?

Ring Sizer Pro costs $1.99, with no in-app purchases.

### Is Always on Display Clock free?

Always on Display Clock is free to download, with in-app purchases available.

### Do Ring Sizer Pro or Always on Display Clock have ads?

Neither Ring Sizer Pro nor Always on Display Clock shows ads.

### Which is updated more often, Ring Sizer Pro or Always on Display Clock?

Ring Sizer Pro ships an update every 4 months, and Always on Display Clock every 2 days. Most recently, Ring Sizer Pro was updated on November 2, 2026 and Always on Display Clock on November 6, 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.*