# Ring Sizer Pro vs Calc Deluxe

The clearest difference is rating: Calc Deluxe at 5.0 against Ring Sizer Pro's 2.0. Calc Deluxe also leads on update cadence (every 4 days vs every 4 months). Ring Sizer Pro's advantage is iOS requirement (13.0 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Ring Sizer Pro costs $1.99 and Calc Deluxe $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Calc Deluxe holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Ring Sizer Pro ships an update every 4 months, Calc Deluxe every 4 days. The most recent releases landed on September 21, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | Ring Sizer Pro | Calc Deluxe |
| --- | --- | --- |
| Price | $1.99 | **$1.49** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/ring-sizer-pro/id1064173293/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calc-deluxe/id6466559834/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 2 MB | 4 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Mike Melnikov](https://appshunter.io/developer/398340766) | [stephen feggeler](https://appshunter.io/developer/812822054) |

## 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


### Calc Deluxe

[App page](https://appshunter.io/ios/app/calc-deluxe/id6466559834)

A user-friendly scientific calculator that displays equations and running totals. It offers convenient deletion options for characters or the entire equation. Purchase once for access on iPhone, iPad, Mac, and Apple Watch.

**Highlights:** Equation display, Running total, Character deletion, Clear entire equation, Cross-device compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ring Sizer Pro free?

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

### Is Calc Deluxe free?

Calc Deluxe costs $1.49, with no in-app purchases.

### Which has better reviews, Ring Sizer Pro or Calc Deluxe?

Calc Deluxe is rated higher. Ring Sizer Pro averages 2.0 out of 5 from 1 ratings, while Calc Deluxe averages 5.0 from 1 ratings.

### Do Ring Sizer Pro or Calc Deluxe have ads?

Neither Ring Sizer Pro nor Calc Deluxe shows ads.

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

Ring Sizer Pro ships an update every 4 months, and Calc Deluxe every 4 days. Most recently, Ring Sizer Pro was updated on September 21, 2026 and Calc Deluxe on July 17, 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.*