# UnitGrid - Pro Converter — 33 Categories · Offline No Ads

> Professional, offline unit converter with 33 categories and no ads or subscriptions. (iPhone/iPad app by 骏 叶.)

- Source: https://appshunter.io/ios/app/unitgrid-pro-converter/id6748609933 (this page in markdown: same URL + `.md`)
- Developer: [骏 叶](https://appshunter.io/developer/1503015353)
- Category: Utilities, Lifestyle
- Price: $1.99 (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 17.6 · 3 MB
- Languages: American English, Bangla, Croatian, Czech, Danish, Dutch, French (France), German (Germany), Greek, Hungarian and 18 more
- Released: 2025-07-16
- Data updated: 2026-07-19
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/unitgrid-pro-converter/id6748609933/reviews.md

## What is UnitGrid?

Omni Unit Converter — 33 Pro Categories, One-Time Purchase, Forever Ad-Free
Tired of clunky websites, intrusive ads, and forced subscriptions just to convert a few units? Omni Unit Converter is a professional, all-in-one measurement tool built for speed and precision. It covers everything from everyday life to engineering, science, and academic work — with a single one-time purchase. No subscriptions, no ads, and absolutely no tracking of your data. Open it and go: results appear instantly, accurately, and cleanly, every single time.

Why Omni Unit Converter?
Most converters are either too basic or buried under ads and paywalls. We took the opposite path. For less than the price of a coffee ($1.99), you get all 33 complete categories, hundreds of units, and 28 interface languages — all unlocked at once. No in-app purchases, no monthly fees, no "premium" upsell. Updates stay free. A great tool should let you focus on your work, not on paying for features or dodging ads.

33 Categories — Everything You Can Think Of
Everyday: Length, Area, Volume, Mass (Weight), Temperature, Speed, Time, Pressure, Angle. Perfect for cooking, shopping, travel, fitness, and home projects.
Data & Network: Data Storage and Data Transfer Rate. We carefully separate decimal (KB/MB/GB, base-1000) from binary (KiB/MiB/GiB, base-1024) — finally clearing up the classic "advertised vs. actual drive capacity" confusion.
Engineering & Physics: Power, Energy, Force, Torque, Flow Rate, Mass Flow Rate, Acceleration, Density, Frequency, Fuel Economy.
Electrical: Voltage, Current, Resistance, Conductance, Capacitance, Inductance, and Charge (battery capacity in mAh/Ah).
Optical: Illuminance, Luminous Flux, Luminous Intensity, and Luminance (nits) — ideal for lighting design and screen specs.
Every category includes units from SI to imperial, all verified for numerical accuracy you can trust in real engineering and scientific work.

Built for Precision
All conversions are based on authoritative standard coefficients and validated to near-zero relative error. Scientific notation, high-precision decimals, and localized number formats (decimal points and thousands separators) are all handled smartly. Tap any result to instantly reuse it as your next input for seamless chained conversions.

28 Languages, Fully Offline, Privacy First
The app works completely offline — on planes, subways, or anywhere with no signal. Nothing is uploaded, tracked, or collected. Your inputs stay yours. The interface supports 28 languages and follows your system language automatically.

One Purchase, Real Value
Just $1.99, forever — free updates included
Zero ads · Zero subscriptions · Zero tracking
Works offline · Remembers your last category and input
Continuously maintained with new units and improvements
For students, engineers, designers, and anyone who values efficiency — download Omni Unit Converter today and leave ads and subscriptions behind for good.

## Key features

- 33 conversion categories
- Offline functionality
- Ad-free experience
- One-time purchase
- Instant and accurate results
- Supports 28 languages

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/unitgrid-pro-converter/id6748609933/reviews.md

### 5/5 — 很好的软件

*2025-07-18*

简洁高效更新快期待更多的软件

**Developer response:** 感谢你的下载和使用，欢迎给我们提供宝贵建议。

## Frequently asked questions about UnitGrid

### What is the price of UnitGrid - Pro Converter?

UnitGrid - Pro Converter is available for a one-time purchase of $1.99. This price includes all features and future updates, with no additional subscriptions or in-app purchases.

### Does UnitGrid - Pro Converter have ads?

No, UnitGrid - Pro Converter is completely ad-free. The developer emphasizes a clean user experience without intrusive advertisements.

### Can I use UnitGrid - Pro Converter offline?

Yes, UnitGrid - Pro Converter works entirely offline. You can perform conversions on planes, subways, or anywhere without an internet connection.

### How often is UnitGrid - Pro Converter updated?

The app is continuously maintained with new units and improvements. The latest version, 1.3.3, was updated on June 24, 2026.

### What devices support UnitGrid - Pro Converter?

UnitGrid - Pro Converter is available for iPhone and iPad. It is designed for iOS devices.

### What age rating does UnitGrid - Pro Converter have?

UnitGrid - Pro Converter has an age rating of 4+. This indicates it is suitable for a wide range of users, including children.

### Does UnitGrid - Pro Converter track user data?

No, the app explicitly states that it does not track or collect any of your data. Your inputs and usage remain private.

### What kind of unit categories does UnitGrid - Pro Converter offer?

UnitGrid - Pro Converter offers 33 categories, including everyday units (length, mass, temperature), data and network units, engineering and physics units, electrical units, and optical units.

## Version history (last 5 releases)

### 1.3.3 — 2026-06-24

What's New

This update significantly expands categories and units, with improved accuracy and language support:
【11 New Conversion Categories】
· Acceleration, Torque, Flow Rate, Mass Flow Rate
· Data Transfer Rate, Fuel Economy
· Charge (battery capacity, mAh / Ah)
· Angular Velocity, Luminous Flux, Luminous Intensity, Luminance
(Now 33 categories in total)
【Smarter Data Storage】
· Added binary units KiB / MiB / GiB / TiB / PiB (base-1024)
· Decimal units KB / MB / GB corrected to the standard base-1000
· Clears up the classic "advertised vs. actual drive capacity" confusion
【More Everyday Units】
· Mass: added Carat, Stone
· Time: added Month, Nanosecond
· Power: added Megawatt, Milliwatt, BTU/hour
【9 New Interface Languages】
· Danish, Dutch, Czech, Croatian, Romanian, Bengali, Swedish, Tamil, Greek
(Now supporting 28 languages)
【Accuracy & Experience】
· Fixed an issue where tapping a scientific-notation result could not be reused for further conversion
· Very large values now show a clear message instead of a blank result
· Unified certain unit symbols (micro µ) for consistency
· All conversions verified for numerical accuracy
Thanks for using the app! If you enjoy it, please leave a rating on the App Store. We welcome your feedback

### 1.3.2 — 2026-03-08

This update refines the UI design, enhances calculation accuracy, and adds support for more languages for a smoother, more precise experience.

### 1.3.1 — 2025-08-12

Fixed the issue where the last selected language and tool category were not remembered, and standardized the format of the entered numbers.

### 1.3 — 2025-07-28

1. Added multiple unit conversion tools
2. Improved calculation accuracy
3. Added support for German, French, Italian, and Spanish
4. Optimized iPad interface for a better large-screen experience
5. Fixed minor bugs, improved app performance and stability
6. Compatible with iOS 15.6

### 1.1 — 2025-07-18

Thank you for your support! In this update, we’ve introduced many new features and experience optimizations:

Expanded Unit Library:
Added multiple specialized categories in electricity and optics, including illuminance, resistance, voltage, current, and more.

Global Language Support:
Now supports 8 languages including Simplified Chinese, Traditional Chinese, English, Japanese, and Korean. Language is automatically detected based on your system or can be freely switched within the app.

Core Experience Upgrades:
Haptic feedback added for a more satisfying interaction.
New “Reset” button and smart keyboard management for more efficient input.
Now remembers your last selected unit in each category.

Bug Fixes & Optimizations:
Fixed display issues during high-precision calculations.
Resolved UI misalignment caused by text wrapping in multi-language environments.
Fixed layout conflicts caused by the keyboard toolbar.
We hope you enjoy this update!

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All apps by 骏 叶: https://appshunter.io/developer/1503015353

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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 2026-07-19.*