# Ring Sizer Pro vs Ata's Eye

Ring Sizer Pro and Ata's Eye both sit at 2.0 stars, but that hides the real split: 100% of Ring Sizer Pro's written reviews are positive against 11% of Ata's Eye's. Ring Sizer Pro also leads on iOS requirement (13.0 vs 15). Ata's Eye's advantage is price (Free vs $1.99) and update cadence (monthly vs every 4 months). On rating, ads, in-app purchases and monetization model there is nothing between them.

Ata's Eye is free to download; Ring Sizer Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.0 for Ring Sizer Pro against 2.1 for Ata's Eye. That said, the two scores are not equally well evidenced: Ata's Eye has 25 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of Ring Sizer Pro's written reviews are positive against 11% of Ata's Eye's.

Ring Sizer Pro ships an update every 4 months, Ata's Eye monthly. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Ring Sizer Pro | Ata's Eye |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/ring-sizer-pro/id1064173293/reviews) | **[2.1 (25 ratings)](https://appshunter.io/ios/app/atas-eye/id6748500109/reviews)** |
| Number of ratings | 1 | **25** |
| Positive reviews | **100.0% of reviews** | 11.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 2 MB | 113 MB |
| Requires iOS | **13.0** | 15 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Melnikov](https://appshunter.io/developer/398340766) | [凸凹设计咨询(上海)有限公司](https://appshunter.io/developer/1818333722) |

## 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


### Ata's Eye

[App page](https://appshunter.io/ios/app/atas-eye/id6748500109)

Control a personal robot to remotely explore your home, interact with pets and family, and capture moments. Features include HD video streaming, remote photo/video recording, and intelligent security modes for constant monitoring.

**Highlights:** HD video streaming and exploration, Remote photo and video capture, Sentry Mode for motion detection, Scheduled patrol routes, Shareable access with permission controls, Intuitive game-like controls

**In-app purchases:** none


## Frequently asked questions

### Is Ring Sizer Pro free?

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

### Is Ata's Eye free?

Ata's Eye is free to download, with no in-app purchases.

### Which has better reviews, Ring Sizer Pro or Ata's Eye?

Ata's Eye is rated higher. Ring Sizer Pro averages 2.0 out of 5 from 1 ratings, while Ata's Eye averages 2.1 from 25 ratings.

### Do Ring Sizer Pro or Ata's Eye have ads?

Neither Ring Sizer Pro nor Ata's Eye shows ads.

### Which is updated more often, Ring Sizer Pro or Ata's Eye?

Ring Sizer Pro ships an update every 4 months, and Ata's Eye monthly. Most recently, Ring Sizer Pro was updated on September 21, 2026 and Ata's Eye on September 14, 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.*