# Femtek Sizer vs Ring Sizer

The clearest difference is in-app purchases: Femtek Sizer at none against Ring Sizer's 3. Femtek Sizer also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). Ring Sizer's advantage is update cadence (every 2 months vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Ring Sizer sells 3 one-off in-app purchases. Femtek Sizer asks for nothing beyond the download.

Femtek Sizer ships an update every 5 months, Ring Sizer every 2 months. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Femtek Sizer | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 1 MB | 23 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Femtek](https://appshunter.io/developer/1552913506) | [Cloud Motion Lab LLC](https://appshunter.io/developer/1866865109) |

## What reviewers say

### Femtek Sizer

[App page](https://appshunter.io/ios/app/femtek-sizer/id1664137756)

This utility app helps you find your ring size accurately using your phone's screen. Simply place a ring on your device and adjust the slider to match the size, eliminating the need for physical tools or guesswork.

**Highlights:** On-screen ring sizing, Slider adjustment for precise measurement, Eliminates need for physical tools, Troubleshooting guide available

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-accurate-and-fast/id6759962313)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RingSizerPremium | $4.99 | one-time |
| Lifetime Pro - Special Offer | $9.99 | one-time |
| Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Femtek Sizer free?

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

### Is Ring Sizer free?

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

### Do Femtek Sizer or Ring Sizer have ads?

Ring Sizer shows ads; Femtek Sizer does not.

### Which is updated more often, Femtek Sizer or Ring Sizer?

Femtek Sizer ships an update every 5 months, and Ring Sizer every 2 months. Most recently, Femtek Sizer was updated on October 2, 2026 and Ring Sizer on October 16, 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.*