# Sader Method vs Ring Sizer+

The clearest difference is rating: Sader Method at 5.0 against Ring Sizer+'s 4.0. Sader Method also leads on in-app purchases (none vs 4) and ads (none vs shown). Ring Sizer+'s advantage is ratings volume (12 vs 1) and update cadence (every 23 months vs every 57 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Ring Sizer+ sells 3 in-app purchases, starting at $4.99 per month. Sader Method asks for nothing beyond the download.

Sader Method holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Ring Sizer+ has 12 ratings behind it against 1, so its average is the more settled of the two.

Sader Method ships an update every 57 months, Ring Sizer+ every 23 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sader Method | Ring Sizer+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sader-method/id402544930/reviews)** | [4.0 (12 ratings)](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641/reviews) |
| Number of ratings | 1 | **12** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 57 months | **Every 23 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 6 MB |
| Requires iOS | 15.4 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Sader](https://appshunter.io/developer/402544933) | [Arda Sen](https://appshunter.io/developer/1670665250) |

## What reviewers say

### Sader Method

[App page](https://appshunter.io/ios/app/sader-method/id402544930)

This utility app helps calibrate Atomic Force Microscope cantilevers. It provides a user interface to determine the spring constant of a cantilever using its resonant frequency and quality factor.

**Highlights:** Atomic Force Microscope cantilever calibration, Determine spring constant, Resonant frequency measurement, Quality factor measurement, User interface for calibration

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Sizer+

[App page](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641)

Effortlessly measure rings, jewelry, and other objects with precision using visual cues and a digital ruler. Supports global sizing standards and stores measurement history for convenience. Ensures a perfect fit for your precious items.

**Highlights:** Seamless measurement experience, Versatile digital ruler, Global size support, Perfect fit guarantee, Measurement history

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Sader Method free?

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

### Is Ring Sizer+ free?

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

### Which has better reviews, Sader Method or Ring Sizer+?

Sader Method is rated higher. Sader Method averages 5.0 out of 5 from 1 ratings, while Ring Sizer+ averages 4.0 from 12 ratings.

### Do Sader Method or Ring Sizer+ have ads?

Ring Sizer+ shows ads; Sader Method does not.

### Which is updated more often, Sader Method or Ring Sizer+?

Sader Method ships an update every 57 months, and Ring Sizer+ every 23 months. Most recently, Sader Method was updated on October 4, 2026 and Ring Sizer+ on October 24, 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.*