# Ring Sizer Pro vs LookLockdown

The clearest difference is price: LookLockdown at Free against Ring Sizer Pro's $1.99. LookLockdown also leads on update cadence (monthly vs every 4 months). Ring Sizer Pro's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.

LookLockdown is free to download; Ring Sizer Pro costs $1.99 up front. LookLockdown sells 2 in-app purchases, starting at $0.99 per month. Ring Sizer Pro asks for nothing beyond the download.

Ring Sizer Pro ships an update every 4 months, LookLockdown monthly. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Ring Sizer Pro | LookLockdown |
| --- | --- | --- |
| 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 | **Monthly** |
| Monetization | Paid | — |
| Size | 2 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Melnikov](https://appshunter.io/developer/398340766) | [昊 陆](https://appshunter.io/developer/1398172088) |

## What reviewers say

### Ring Sizer Pro

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

Easily determine your jewelry ring size with this accurate tool. It offers multiple measurement units, visual guides, and supports numerous international sizing systems. Share your findings effortlessly.

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

**Features:** Apple Watch app

**In-app purchases:** none


### LookLockdown

[App page](https://appshunter.io/ios/app/looklockdown/id6736931869)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Ring Sizer Pro free?

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

### Is LookLockdown free?

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

### Do Ring Sizer Pro or LookLockdown have ads?

Neither Ring Sizer Pro nor LookLockdown shows ads.

### Which is updated more often, Ring Sizer Pro or LookLockdown?

Ring Sizer Pro ships an update every 4 months, and LookLockdown monthly. Most recently, Ring Sizer Pro was updated on September 21, 2026 and LookLockdown on September 19, 2026.

---

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