O vs Olypsys Measure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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.
Olypsys Measure
This app helps businesses accurately measure and identify O-rings using their phone. It matches measurements against international standards and maintains an audit record with project details. Ideal for quality control during goods-inward inspection, part replacement, and pre-assembly checks.
- Accurate O-ring measurement
- O-ring identification
- Match against international standards
- Audit record keeping
- Project reference and location tagging
- Goods-inward inspection tool
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Measure and identify O-rings, gaskets, circlips and washers with your phone. Put the part flat on an Olypsys calibration grid and take a photo. You get its dimensions in seconds, and the app tells you which catalogue parts fit. WHAT IT MEASURES Free: O-rings and backup rings. Pro: worn and compression-set O-rings, FEP O-rings, X-rings, square rings, V-rings, O-ring cord, gaskets, circlips and washers. Enterprise: enhanced-accuracy O-ring measurement and remote capture. STANDARDS MATCHING Measured parts are compared against catalogue sizes from standards including AS568, BS 4518, GB/T 3452.1, JIS B 2401, DIN 471, DIN 472, DIN 6799, ASME B16.21 and EN 1514-1. You see ranked candidates with a confidence score, part number and manufacturer. CAD EXPORT (PRO) Download any traced gasket, circlip or washer as DXF, SVG or .o2d for cutting or quoting. WHAT PEOPLE USE IT FOR Goods-inward inspection. Identifying worn or unmarked parts for replacement. Quality checks before assembly. Go/No-go checking against your own tolerances or a standard size. Measurements save with a project reference, location and application. Free accounts keep three days of history. Pro keeps all of it. The computer vision corrects for shadows, camera tilt and lens distortion, so results repeat between photos. You need an Olypsys calibration grid. Print one, or buy a durable mat. Pro and Enterprise are subscriptions. Enterprise is sold through Olypsys and its distributors: contact sales@olypsys.com.
Screenshots
Verdict
The clearest difference is rating: O at 5.0 against Olypsys Measure's 3.0. O also leads on in-app purchases (none vs 3). Olypsys Measure's advantage is update cadence (every 4 weeks vs every 11 months) and ratings volume (4 vs 1). On price, ads, device support and iOS requirement 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. Olypsys Measure sells 3 in-app purchases, starting at $10.00 per month. O asks for nothing beyond the download.
O holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
O ships an update every 11 months, Olypsys Measure every 4 weeks. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.
| Parameter | O | Olypsys Measure |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.0 (4 ratings) |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 11 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 47 MB | 101 MB |
| Age rating | 4+ | 4+ |
| Developer | GE MAO RUBBER INDUSTRIAL CO., LTD. | Olypsys Technologies Ltd |
Customer experience
O
Olypsys Measure
In-app purchases
O
No in-app purchases
Olypsys Measure
- Olypsys Pro Monthly3 Days trial$10.001 Month
- Pro (yearly)$80.001 Year
- Olypsys Enterprise Yearly$600.001 Year
Questions
Is O free?
Is Olypsys Measure free?
Which has better reviews, O or Olypsys Measure?
Do O or Olypsys Measure have ads?
Which is updated more often, O or Olypsys Measure?
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