Comparison

O vs Teknik Hesaplar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Teknik Hesaplar

Features
Read full description

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

O4 screens
Teknik Hesaplar4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

O ships an update every 11 months, Teknik Hesaplar weekly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
O versus Teknik Hesaplar: the parameters behind the verdict, then further details
ParameterOTeknik Hesaplar
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 11 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better16.6
Further details — not scored
Size47 MB4 MB
Age rating4+4+
DeveloperGE MAO RUBBER INDUSTRIAL CO., LTD.Hidayet Balin

In-app purchases

None

O

No in-app purchases

None

Teknik Hesaplar

No in-app purchases

Questions

Is O free?
O is free to download, with no in-app purchases.
Is Teknik Hesaplar free?
Teknik Hesaplar is free to download, with no in-app purchases.
Do O or Teknik Hesaplar have ads?
Neither O nor Teknik Hesaplar shows ads.
Which is updated more often, O or Teknik Hesaplar?
O ships an update every 11 months, and Teknik Hesaplar weekly. Most recently, O was updated on October 24, 2026 and Teknik Hesaplar on October 31, 2026.

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