O vs Dealful钉富
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.
Dealful钉富
This foreign trade management software offers AI-powered customer acquisition, email management, and smart office tools. It streamlines business operations for trade professionals, enabling efficient management from anywhere with real-time data synchronization across devices.
- AI customer acquisition
- Email management
- Smart office functions
- Subordinate management
- Real-time data sync
- Cross-device access
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钉富dingful是一款外贸移动管理软件。提供邮件管理、AI获客、智能办公、下属管理等功能，让贸易管理更轻松。深度结合外贸领域的业务场景；一站式全场景工作平台，随时随地的业务管理，多端信息实时同步，全面提升工作效率
Screenshots
Verdict
The clearest difference is update cadence: Dealful钉富 at monthly against O's every 11 months. Dealful钉富 also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, rating, ratings volume and ads 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 O against 5.0 for Dealful钉富. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
O ships an update every 11 months, Dealful钉富 monthly. The most recent releases landed on October 24, 2026 and September 17, 2026 respectively.
| Parameter | O | Dealful钉富 |
|---|---|---|
| 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 11 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | GE MAO RUBBER INDUSTRIAL CO., LTD. | Ningbo China Goodluck Network Technology Co., Ltd. |
Customer experience
O
Dealful钉富
In-app purchases
O
No in-app purchases
Dealful钉富
No in-app purchases
