# Sensors vs Ring Sizer Pro

Sensors and Ring Sizer Pro both sit at 2.0 stars, but that hides the real split: 100% of Ring Sizer Pro's written reviews are positive against 33% of Sensors's. Ring Sizer Pro also leads on update cadence (every 4 months vs every 21 months). Sensors's advantage is ratings volume (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Sensors costs $1.99 and Ring Sizer Pro $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 Sensors against 2.0 for Ring Sizer Pro. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 33% of Sensors's written reviews are positive against 100% of Ring Sizer Pro's.

Sensors ships an update every 21 months, Ring Sizer Pro every 4 months. The most recent releases landed on June 5, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Sensors | Ring Sizer Pro |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/sensors/id481727463/reviews) | [2.0 (1 ratings)](https://appshunter.io/ios/app/ring-sizer-pro/id1064173293/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 3 MB | 2 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Mike Melnikov](https://appshunter.io/developer/398340766) |

## What reviewers say

### Sensors

[App page](https://appshunter.io/ios/app/sensors/id481727463)

Access all your device's built-in sensor data in one place. View readings for acceleration, compass, pressure, location, and more. It also retrieves location names and elevation from external databases and local weather information.

**Highlights:** View all device sensor values, Supports acceleration, compass, pressure, location, Retrieves location name and elevation, Fetches local outdoor temperature and air pressure, Switch between imperial and metric units, Option to hide unavailable sensors, Supports iPad multitasking

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sensors free?

Sensors costs $1.99, with no in-app purchases.

### Is Ring Sizer Pro free?

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

### Which has better reviews, Sensors or Ring Sizer Pro?

Sensors and Ring Sizer Pro are both rated 2.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Sensors or Ring Sizer Pro have ads?

Neither Sensors nor Ring Sizer Pro shows ads.

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

Sensors ships an update every 21 months, and Ring Sizer Pro every 4 months. Most recently, Sensors was updated on June 5, 2026 and Ring Sizer Pro on September 21, 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.*