O vs Teknik Hesaplar
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.
Teknik Hesaplar
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Mühendislik Hesaplamaları Alan, hacim ve temel teknik hesaplamalar Birim dönüşümleri Kuvvet, gerilim ve mühendislik temelli araçlar İmalat Hesaplamaları Devir ve ilerleme hesapları (matkap, freze, torna) Kesme gücü, tork ve yük hesapları Talaş hacmi (MRR) ve çevrim süresi Takım ömrü ve yüzey pürüzlülüğü (Ra) ISO tolerans, vida/diş ve delik–mil geçmeleri İş & Kıdem Hesaplamaları Kıdem tazminatı hesaplama İhbar süresi ve ihbar tazminatı İş hayatında sık kullanılan pratik hesaplamalar Tarih Hesaplamaları İki tarih arası gün farkı Tarih ekleme / çıkarma Yaş hesaplama Haftanın günü, iş günü ve artık yıl hesapları Neden Teknik Hesaplamalar? Hızlı ve doğru hesaplama Kullanımı sade ve anlaşılır arayüz Türkiye’deki kullanıcı alışkanlıklarına uygun Reklam karmaşası olmadan odaklı kullanım Sürekli güncellenen içerik Gizlilik Uygulama herhangi bir kişisel veri toplamaz. Tüm hesaplamalar cihaz üzerinde yapılır.
Screenshots
Verdict
The clearest difference is update cadence: Teknik Hesaplar at weekly against O's every 11 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
O ships an update every 11 months, Teknik Hesaplar weekly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | O | Teknik Hesaplar |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 47 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | GE MAO RUBBER INDUSTRIAL CO., LTD. | Hidayet Balin |
In-app purchases
O
No in-app purchases
Teknik Hesaplar
No in-app purchases









