# Ring Sizer vs Core Timer

The clearest difference is in-app purchases: Core Timer at none against Ring Sizer's 15. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 13 in-app purchases, starting at $4.99 per 7 days. Core Timer asks for nothing beyond the download.

Ring Sizer ships an update weekly, Core Timer every 6 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Ring Sizer | Core Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36 ratings)](https://appshunter.io/ios/app/ring-sizer-risi/id6736565382/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 12 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Axel Le Pennec](https://appshunter.io/developer/671697425) | [James Mowat](https://appshunter.io/developer/1839159413) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-risi/id6736565382)

Accurately measure ring and finger sizes from home, ensuring a perfect fit for any occasion. Convert sizes internationally and save measurements for future use. Ideal for online ring purchases, eliminating guesswork.

**Highlights:** Measure ring diameter/circumference, Measure finger width, International size conversions, Save measurements, Share measurements

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Weekly | $5.99 | per 7 days |
| Weekly | $6.99 | per 7 days |
| Weekly | $6.99 | per 7 days |
| Weekly | $7.99 | per 7 days |
| Yearly | $17.99 | per year |
| Yearly | $24.99 | per year |
| Lifetime | $2.99 | one-time |
| Lifetime | $4.99 | one-time |
| Lifetime | $6.99 | one-time |
| Lifetime | $19.99 | one-time |
| Lifetime | $99.99 | one-time |


### Core Timer

[App page](https://appshunter.io/ios/app/core-timer/id6752376369)

**In-app purchases:** none


## Frequently asked questions

### Is Ring Sizer free?

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

### Is Core Timer free?

Core Timer is free to download, with no in-app purchases.

### Do Ring Sizer or Core Timer have ads?

Neither Ring Sizer nor Core Timer shows ads.

### Which is updated more often, Ring Sizer or Core Timer?

Ring Sizer ships an update weekly, and Core Timer every 6 days. Most recently, Ring Sizer was updated on October 9, 2026 and Core Timer on October 4, 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.*