Leak Calculator vs O
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Leak Calculator
Estimate production rates and cycle times for leak testing with this pocket-sized tool. It offers multiple calculation options and unit conversions, serving as a valuable resource for professionals in the field.
- Solve for Total Cycle Time
- Solve Part Volume
- Solve Leak Rate
- Solve for Expected Pressure Change
- Solve for Test Time
- Pressure Decay Cycle Time
- Unit Converters
Read full descriptionHide full description
Leak Calculator – Pocket Edition is a multi-platform App! From the world’s most experienced leak and flow test company. Our easy to use trusted advisor series cycle time estimator has now been configured for your IOS. Need to estimate production rate based on known testing specifications? Then this application is for you. Great everyday resource. Benefits & Features: 1.Solve for Total Cycle Time 2.Solve Part Volume 3.Solve Leak Rate 4.Solve for Expected Pressure Change 5.Solve for Test Time 6.Solve for Leak Rate 7.Common Pressure Unit Converter 8.Common Flow Unit Converter 9.Pressure Decay Cycle Time 10.Calculation for Part Volume Size 11.Selectable Engineering Units The next best thing to having a leak test expert in your pocket. Send us your feedback via: Facebook: https://www.facebook.com/pages/Uson/524072150946936 Twitter: https://twitter.com/UsonLeakTesters LinkedIn: http://www.linkedin.com/company/577068 Google+: https://plus.google.com/113169780209231377521/posts e-mail: apps@uson.com web:http://www.uson.com/leak-calculator Stay tuned for more release from our trusted advisor series -pocket edition.
O
This app provides a comprehensive offline tool for selecting standard rubber seal sizes, including O-Rings, X-Rings, and Back-Up Rings. It offers dimension searches, housing calculations for various sealing applications, and supports multiple international standards in both metric and imperial units.
- Offline standard rubber seal size selection
- Search for O-Ring, X-Ring, and Back-Up Ring sizes
- O-Ring housing calculations for sealing applications
- Supports multiple international standards (AS568, METRIC, JIS, etc.)
- Metric and Imperial unit support
- Substitutable O-Ring size suggestions
Read full descriptionHide full description
GMORS O-Ring Master is the completed tool for standard rubber seal sizes. When you use this APP, you don't need to have internet and catalog. Except O-Ring sizes, it also includes the search functions of X-Ring and Back-Up Ring. Otherwise, you can also use O-Ring Housing to choose suitable O-Ring in your application. Main functions are as follows: Dimension Search：O-Ring, X-Ring and Back-Up Ring. - MM and Inch are both available. - Full standard O-Ring series: AS568, BS 4518, GB/T 3452.1, JIS B2401 P, JIS B2401 G, JIS B2401 S, JIS B2401 V, SMS 1586 and METRIC. - Collocated Back-Up for AS-568 O-Ring. - Substitutable O-Ring sizes within tolerance are available. O-Ring Housing： Piston Sealing、Rod Sealing and Face Sealing. - MM and Inch are both available. - Support calculation for both Static and Dynamic sealing applications (Face sealing is with static calculation only). - Up to 7 O-Ring standards ( AS568, METRIC, JIS B2401 P/G/S/V, JASO F404, GB/T 3452.1, BS 4518 and SMS 1586) for most of size requirement of different groove design.
Screenshots
Verdict
The clearest difference is device support: Leak Calculator at 3 against O's 1. Leak Calculator also leads on iOS requirement (6.0 vs 16.0). On price, rating, ratings volume and update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Leak Calculator against 5.0 for O. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Leak Calculator ships an update every 18 months, O every 11 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | Leak Calculator | O |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 18 months | Every 11 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 6.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 5 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Uson L.P. | GE MAO RUBBER INDUSTRIAL CO., LTD. |
Customer experience
Leak Calculator
O
In-app purchases
Leak Calculator
No in-app purchases
O
No in-app purchases
