# Converter vs Roll Length Calc

The clearest difference is price: Converter at Free against Roll Length Calc's $0.99. On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Converter is free to download; Roll Length Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Converter | Roll Length Calc |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.9 (980 ratings)](https://appshunter.io/ios/app/converter-universal-conversion/id423521445/reviews)** | — |
| Number of ratings | **980** | — |
| Positive reviews | 93.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 37 MB | 2 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Konstantin Khoroshun](https://appshunter.io/developer/1476700024) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-universal-conversion/id423521445)

This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

**Highlights:** Currency converter with live exchange rates, Over 300 engineering and scientific units, Specialized hardness converter, Timezone conversion, Running pace calculator, Integrated standard calculator, Conversion history log

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate and fast conversions
- 💡 Comprehensive coverage of units and categories
- 🔒 No ads or hidden fees
- 💡 Useful currency converter

**What reviewers complain about**

- 🐛 Currency conversion rates can be outdated
- 🔍 Difficult to find specific conversions due to large number of options
- 💡 Lack of ability to set favorite conversions as default

**Reported bugs**

- Occasional crashes on startup for non-English/German users
- Conversion from meters to feet does not show inches

**Requested features**

- Add fuel efficiency conversions
- Allow users to set favorite conversions as default
- Improve currency conversion rate updates


### Roll Length Calc

[App page](https://appshunter.io/ios/app/roll-length-calc/id6754931640)

Calculate the length and area of rolled materials with precision. Save, search, and manage your calculations with detailed reports and notes. Supports multiple units and offers a user-friendly interface for professionals.

**Highlights:** Calculate roll length from diameters and thickness, Compute material surface area, Save calculations with custom titles and types, Add notes to reports, Search through saved reports, Calculate roll diameter from length, Support for multiple units of measurement

**In-app purchases:** none


## Frequently asked questions

### Is Converter free?

Converter is free to download, with no in-app purchases.

### Is Roll Length Calc free?

Roll Length Calc costs $0.99, with no in-app purchases.

### Do Converter or Roll Length Calc have ads?

Neither Converter nor Roll Length Calc shows ads.

### Which is updated more often, Converter or Roll Length Calc?

Converter ships an update every 2 months, and Roll Length Calc every 2 months. Most recently, Converter was updated on October 20, 2026 and Roll Length Calc on September 7, 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.*