# Ring Sizer vs Reaction Deck

The clearest difference is update cadence: Ring Sizer at weekly against Reaction Deck's fortnightly. Ring Sizer also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Ring Sizer sells 10 in-app purchases, starting at $4.99 per 7 days and Reaction Deck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ring Sizer ships an update weekly, Reaction Deck fortnightly. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ring Sizer | Reaction Deck |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 4 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Axel Le Pennec](https://appshunter.io/developer/671697425) | [MICHELE MASSARO](https://appshunter.io/developer/1661627599) |

## What reviewers say

### Ring Sizer

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

Easily determine the perfect ring size from home. Measure fingers or existing rings with precision and convert sizes across international standards. Ideal for online shoppers and gift-givers.

**Highlights:** Measure ring diameter and circumference, Measure finger width, International size conversions, Save and share measurements, Metric and imperial units

**Features:** iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 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 |
| 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 |


### Reaction Deck

[App page](https://appshunter.io/ios/app/reaction-deck/id6759525170)

**Features:** Family Sharing, iMessage stickers, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $0.99 | one-time |


## Frequently asked questions

### Is Ring Sizer free?

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

### Is Reaction Deck free?

Reaction Deck is free to download, with in-app purchases available.

### Do Ring Sizer or Reaction Deck have ads?

Neither Ring Sizer nor Reaction Deck shows ads.

### Which is updated more often, Ring Sizer or Reaction Deck?

Ring Sizer ships an update weekly, and Reaction Deck fortnightly. Most recently, Ring Sizer was updated on November 4, 2026 and Reaction Deck on October 25, 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.*