O vs 定位助手
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.
定位助手
This utility app offers a suite of tools including coordinate picking, location modification, GIF creation, media trimming, text extraction, and QR code generation. It aims to provide a range of practical functions for users.
- Virtual location modification
- Coordinate picking
- Image to GIF conversion
- Media trimming and conversion
- Text extraction
- QR code generation
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定位助手-定位修改虚拟定位&图片视频工具，是一款专业的定位和实用小工具软件，可以支持以下功能：坐标拾取，定位工具，图片转GIF，图片视频剪裁转换，手持弹幕，提取文字，超级计算，二维码生成等，欢迎大家体验使用。
Screenshots
Verdict
The clearest difference is review sentiment: O at 100% against 定位助手's 50%. O also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 1). 定位助手's advantage is update cadence (every 2 months vs every 11 months) and ratings volume (3 vs 1). On price, ads and device support 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. 定位助手 sells 1 one-off in-app purchase. O asks for nothing beyond the download.
O holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 100% of O's written reviews are positive against 50% of 定位助手's.
O ships an update every 11 months, 定位助手 every 2 months. Both last shipped on September 26, 2026.
| Parameter | O | 定位助手 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 11 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | GE MAO RUBBER INDUSTRIAL CO., LTD. | Shibumon Te |
Customer experience
O
定位助手
In-app purchases
O
No in-app purchases
定位助手
- 永久会员$3.99
