# PostX vs Ring Sizer

The clearest difference is in-app purchases: PostX at none against Ring Sizer's 1. PostX also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 1 one-off in-app purchase. PostX asks for nothing beyond the download.

PostX ships an update monthly, Ring Sizer every 6 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PostX | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ring-sizer-measuring-rings/id6743349479/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 54 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AIF GROUP CO.,LTD](https://appshunter.io/developer/1704997698) | [Hamid Sher agha](https://appshunter.io/developer/1692155889) |

## What reviewers say

### PostX

[App page](https://appshunter.io/ios/app/postx/id6468446268)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measuring-rings/id6743349479)

Easily measure your ring size at home using your device's screen or a simple finger guide. Get accurate results in seconds and support for multiple international sizing standards. Save and share your measurements for future purchases.

**Highlights:** Measure ring size with device screen, Finger measurement guide, Supports multiple international size standards, Save and share ring sizes, Accurate and fast results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Life time | $4.99 | one-time |


## Frequently asked questions

### Is PostX free?

PostX 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 PostX or Ring Sizer have ads?

Neither PostX nor Ring Sizer shows ads.

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

PostX ships an update monthly, and Ring Sizer every 6 weeks. Most recently, PostX was updated on October 11, 2026 and Ring Sizer on October 12, 2026.

---

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