Sensors vs Ring Sizer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sensors
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.
- 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
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See the values of the built in device sensors all together in one app. Supports (if available) acceleration, heading (compass), pressure, position, altitude and speed. In addition it gets the current location name and the elevation from the GeoNames database and the local outdoor temperature and air pressure from World Weather Online via the internet. More features: - switch between imperial and metric units - optionally hide non available sensors - support for the iPad multitasking (split view..)
Ring Sizer Pro
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.
- Metric and imperial units
- Diameter or circumference measurement
- Visual guides for precision
- Shareable results
- Multiple international sizing systems
- Wide size range support
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Simple and easy to use, but powerfull and accurate tool to quickly find the size of your jewelry ring. With this app you can: - choose between metric and imperial units - choose diameter or circumference - use unique visual guides for precise measuring - easily share your ring size through email and social networks - use up to seven different ring size measure systems, including USA, Canada, Australia, Great Britain, Europe, Italy, Spain, Germany, Russia, Japan, China, India, Hong Kong and Brazil. Ring sizer pro supports a very wide diapason of the possible sizes. From 0000 to 16 in USA size system. Some of the countries share the same measure system. For example USA system is also used in Canada and Mexico. If you don't find you country in the preferences try to find which country use the same system. If you find any mistakes in the measure in you country please send me a letter and I will fix issue in the next app update. Thank you!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 6, 2026 respectively.
| Parameter | Sensors | Ring Sizer Pro |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 2.0 (3 ratings) | 2.0 (1 ratings) |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 21 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Piet Jonas | Mike Melnikov |
Customer experience
Sensors
Ring Sizer Pro
In-app purchases
Sensors
No in-app purchases
Ring Sizer Pro
No in-app purchases
Questions
Is Sensors free?
Is Ring Sizer Pro free?
Which has better reviews, Sensors or Ring Sizer Pro?
Do Sensors or Ring Sizer Pro have ads?
Which is updated more often, Sensors or Ring Sizer Pro?
Other comparisons
