# Unit Converter Pro HD. vs Solving Linear Equation PRO

Unit Converter Pro HD. and Solving Linear Equation PRO both sit at 4.6 stars, but that hides the real split: 87% of Unit Converter Pro HD.'s written reviews are positive against 0% of Solving Linear Equation PRO's. Unit Converter Pro HD. also leads on ratings volume (185 vs 22) and price ($0.99 vs $1.99). Solving Linear Equation PRO's advantage is update cadence (every 3 weeks vs every 2 months). On rating, ads, in-app purchases and monetization model there is nothing between them.

Unit Converter Pro HD. costs $0.99 and Solving Linear Equation PRO $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Unit Converter Pro HD. against 4.6 for Solving Linear Equation PRO. That said, the two scores are not equally well evidenced: Unit Converter Pro HD. has 185 ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 87% of Unit Converter Pro HD.'s written reviews are positive against 0% of Solving Linear Equation PRO's.

Unit Converter Pro HD. ships an update every 2 months, Solving Linear Equation PRO every 3 weeks. The most recent releases landed on September 23, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Unit Converter Pro HD. | Solving Linear Equation PRO |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | [4.6 (185 ratings)](https://appshunter.io/ios/app/unit-converter-pro-hd/id458584668/reviews) | [4.6 (22 ratings)](https://appshunter.io/ios/app/solving-linear-equation-pro/id1273600793/reviews) |
| Number of ratings | **185** | 22 |
| Positive reviews | **86.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 13 MB | 179 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [良峰 侯](https://appshunter.io/developer/654444245) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Unit Converter Pro HD.

[App page](https://appshunter.io/ios/app/unit-converter-pro-hd/id458584668)

Easily convert between over 700 units of measure across 30 categories. This powerful tool acts as a universal assistant for all your conversion needs, saving you time and effort.

**Highlights:** 30 conversion categories, Over 700 units of measure, Backspace key for corrections, Intuitive and easy to use, Supports Dark Mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Easy to use
- 👍 Comprehensive unit conversions
- 👍 Accurate calculations
- 👍 Handy and useful

**What reviewers complain about**

- 🐛 Missing some important units
- 🔍 Difficult to navigate and find desired units
- 🔍 Cluttered interface with too many options
- 🔋 High battery consumption

**Reported bugs**

- Incorrect fuel consumption conversions
- Conversion values disappearing after update

**Requested features**

- Add support for more units (e.g. knots, stone, electron volts)
- Improve navigation and make it easier to find desired units
- Add portrait mode support
- Optimize interface for better usability


### Solving Linear Equation PRO

[App page](https://appshunter.io/ios/app/solving-linear-equation-pro/id1273600793)

Solve linear equations with detailed, step-by-step solutions and visualize the results with plots. Save and access past calculations through a history function, and easily share your final answers.

**Highlights:** Step-by-step equation solving, Plotting of results, Calculation history, Input validation, Decimal and fraction support, Solution sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Pro HD. free?

Unit Converter Pro HD. costs $0.99, with no in-app purchases.

### Is Solving Linear Equation PRO free?

Solving Linear Equation PRO costs $1.99, with no in-app purchases.

### Which has better reviews, Unit Converter Pro HD. or Solving Linear Equation PRO?

Unit Converter Pro HD. and Solving Linear Equation PRO are both rated 4.6 out of 5 on the App Store, from 185 and 22 ratings respectively.

### Do Unit Converter Pro HD. or Solving Linear Equation PRO have ads?

Neither Unit Converter Pro HD. nor Solving Linear Equation PRO shows ads.

### Which is updated more often, Unit Converter Pro HD. or Solving Linear Equation PRO?

Unit Converter Pro HD. ships an update every 2 months, and Solving Linear Equation PRO every 3 weeks. Most recently, Unit Converter Pro HD. was updated on September 23, 2026 and Solving Linear Equation PRO on September 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*