# Ring Sizer vs AquaBuddyAI

The clearest difference is in-app purchases: Ring Sizer at none against AquaBuddyAI's 6. AquaBuddyAI's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. AquaBuddyAI sells 6 in-app purchases, starting at $4.99 per month. Ring Sizer asks for nothing beyond the download.

Ring Sizer ships an update every 2 months, AquaBuddyAI every 4 days. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ring Sizer | AquaBuddyAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (10 ratings)](https://appshunter.io/ios/app/ring-sizer-measure-ring-size/id6654909479/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 10 MB | 193 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aliaksei Mikhailouski](https://appshunter.io/developer/1682692291) | [Gary Haughton](https://appshunter.io/developer/1889492363) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measure-ring-size/id6654909479)

Accurately measure your finger or an existing ring directly from your smartphone. This tool supports multiple international sizing standards and provides easy-to-use visual guides for confident jewelry purchases.

**Highlights:** Measure finger or ring size, Supports international size standards, Easy visual guides, Save and share sizes, No tools required

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

**In-app purchases:** none


### AquaBuddyAI

[App page](https://appshunter.io/ios/app/aquabuddyai/id6762270266)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hobbyist | $4.99 | per month |
| Pro expert | $9.99 | per month |
| Pro Business Monthly | $39.99 | per month |
| Hobbyist Yearly | $39.99 | per year |
| Pro Expert Yearly | $79.99 | per year |
| Pro Business Yearly | $299.00 | per year |


## Frequently asked questions

### Is Ring Sizer free?

Ring Sizer is free to download, with no in-app purchases.

### Is AquaBuddyAI free?

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

### Do Ring Sizer or AquaBuddyAI have ads?

Neither Ring Sizer nor AquaBuddyAI shows ads.

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

Ring Sizer ships an update every 2 months, and AquaBuddyAI every 4 days. Most recently, Ring Sizer was updated on October 19, 2026 and AquaBuddyAI 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.*