O vs Barcode Reader
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.
Barcode Reader
Scan barcodes using your iPhone camera to quickly find product prices from online retailers. It also helps you easily reorder household or business items by scanning existing products.
- Scan barcodes with iPhone camera
- Compare product prices online
- Easily reorder items
- Scan from camera roll
- Save scan history
- Export scan data to CSV
- Bulk scanning mode
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Barcode Reader is just what it says it is. Utilizing the iPhone’s camera, it allows you to scan barcodes, and checks for product prices online. It reads barcodes well and provides fast results. Barcode Scanner is useful for two major tasks: 1. Price Shopping: Just scan the product you are thinking of purchasing, and in seconds you get links and pricing from thousands of online retailers. 2. Replacing household or business items and/or consumables: When you run out of a product just scan it and in two or three clicks the least expensive replacement product is in route to you. -- Scan BarCodes,QR Codes Faster -- Scan from Camera Roll -- Automate Scanner -- Share Scan results -- Save history + csv data exports -- Bulk Mode ( Like in Shop) -- French, Spanish and English
Screenshots
Verdict
The clearest difference is rating: O at 5.0 against Barcode Reader's 3.0. O also leads on ads (none vs shown). Barcode Reader's advantage is iOS requirement (7.1 vs 16.0). On price, review sentiment, ratings volume 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
O holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | O | Barcode Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 11 months | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 7.1 — better |
| Further details — not scored | ||
| Size | 47 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | GE MAO RUBBER INDUSTRIAL CO., LTD. | Aishvarya Sadasivam |
Customer experience
O
Barcode Reader
In-app purchases
O
No in-app purchases
Barcode Reader
No in-app purchases








