# O-Ring Groove Calculator 2026 — Offline seal sizing and groove

> Offline O-ring groove calculator for mechanical engineering and repair. (iPhone/iPad app by Nanjing Yunxiaochuang Technology Co., Ltd.)

- Source: https://appshunter.io/ios/app/o-ring-groove-calculator-2026/id6779919368 (this page in markdown: same URL + `.md`)
- Developer: [Nanjing Yunxiaochuang Technology Co., Ltd](https://appshunter.io/developer/1454457703)
- Category: Utilities
- Price: $0.29 (on sale, was $0.39)
- Age rating: 4+
- Requires: iOS 15.6 · 6 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2026-06-16
- Data updated: 2026-09-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/o-ring-groove-calculator-2026/id6779919368/reviews.md

## What is O?

O-Ring Groove Calculator is a local utility for mechanical engineering, equipment repair, mold assembly, and DIY sealing projects. Use it offline to look up common O-ring sizes, calculate recommended groove dimensions by inner diameter, cross section, and groove type, and check whether compression, stretch, and fill rate are within reasonable ranges.

The app requires no account, does not connect to the internet, and does not collect any data. It is designed for one-time purchase and long-term field use. All projects, favorite sizes, and calculation records stay on your device for repeated offline reference.

## Key features

- Offline O-ring specifications lookup
- Calculate groove dimensions by O-ring size
- Check compression, stretch, and fill ratios
- Supports various groove types
- Local storage for projects and history
- No account or internet required

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/o-ring-groove-calculator-2026/id6779919368/reviews.md

### 1/5 — 超级坑，不要买

*2026-07-10*

一点都不实用，详细参数据不够

## Frequently asked questions about O

### Does O型圈沟槽计算助手 have ads?

No, O型圈沟槽计算助手 does not contain advertisements. It is a paid application designed for uninterrupted use.

### What is the price of O型圈沟槽计算助手?

O型圈沟槽计算助手 is available for a one-time purchase of $0.29. This grants you long-term access to all its features.

### Can I use O型圈沟槽计算助手 offline?

Yes, O型圈沟槽计算助手 is an offline tool. You can access all its functionalities, including specifications and calculations, without an internet connection.

### What devices does O型圈沟槽计算助手 support?

O型圈沟槽计算助手 is supported on iPhones and iPods. It is designed for iOS devices.

### How often is O型圈沟槽计算助手 updated?

The application was last updated on June 16, 2026, with version 1.0. Future updates will depend on developer plans for enhancements or bug fixes.

### Does O型圈沟槽计算助手 require an account?

No, O型圈沟槽计算助手 does not require any account creation or login. It is designed for immediate use after purchase.

### What age rating is O型圈沟槽计算助手?

O型圈沟槽计算助手 has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals.

### Where is my calculation data stored in O型圈沟槽计算助手?

All your projects, saved specifications, and calculation history are stored locally on your device. This ensures your data remains private and accessible even without an internet connection.

## Version history (last 2 releases)

### 1.1 — 2026-07-26

Added a feedback feature.

### 1.0 — 2026-06-16

No release notes.

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All apps by Nanjing Yunxiaochuang Technology Co., Ltd: https://appshunter.io/developer/1454457703

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*