# Roll Calculator vs Nix Toolkit

The clearest difference is rating: Nix Toolkit at 4.7 against Roll Calculator's 4.2. Nix Toolkit also leads on review sentiment (33% vs 0%) and ratings volume (190 vs 11). Roll Calculator's advantage is in-app purchases (none vs 10) and update cadence (fortnightly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Nix Toolkit sells 10 in-app purchases, starting at $4.99 per month. Roll Calculator asks for nothing beyond the download.

Nix Toolkit holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Nix Toolkit has 190 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 0% of Roll Calculator's written reviews are positive against 33% of Nix Toolkit's.

Roll Calculator ships an update fortnightly, Nix Toolkit every 6 weeks. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Roll Calculator | Nix Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (11 ratings)](https://appshunter.io/ios/app/roll-calculator/id1329803577/reviews) | **[4.7 (190 ratings)](https://appshunter.io/ios/app/nix-toolkit/id1539500052/reviews)** |
| Number of ratings | 11 | **190** |
| Positive reviews | 0.0% of reviews | **32.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 68 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beta Flash Solutions Inc.](https://appshunter.io/developer/1329803576) | [Nix Sensor Ltd.](https://appshunter.io/developer/889253267) |

## What reviewers say

### Roll Calculator

[App page](https://appshunter.io/ios/app/roll-calculator/id1329803577)

This app helps users calculate full and partial roll dimensions for various materials. It allows for inventory management, saving calculations, and defining custom material templates. Easily switch between Imperial and Metric units for precise measurements.

**Highlights:** Calculate full and partial roll dimensions, Manage inventory with 'My List', Define custom material templates, Switch between Imperial and Metric units, Calculate material area coverage, Determine material length by counting wraps

**Features:** macOS Compatibility

**In-app purchases:** none


### Nix Toolkit

[App page](https://appshunter.io/ios/app/nix-toolkit/id1539500052)

This app connects to Nix Sensor devices to provide color scanning and analysis. It offers features like single scans, access to premium color databases, and custom library creation. Users can view digital color values and spectral curves, and match scanned colors to extensive libraries.

**Highlights:** Single scan color analysis, Access to premium color databases, Create and share custom color libraries, Multipoint average scanning, Nix Paints feature, Nix Quality Control feature

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RAL | $4.99 | per month |
| Glass Packaging Institute | $8.99 | per month |
| NCS | $9.99 | per month |
| Pantone FHI | $9.99 | per month |
| Pantone PMS | $9.99 | per month |
| RAL | $49.99 | per year |
| NCS | $99.99 | per year |
| Pantone FHI | $99.99 | per year |
| Pantone PMS | $99.99 | per year |
| Glass Packaging Institute | $100.00 | per year |

**What reviewers like**

- 👍 Excellent color matches
- 👍 Accurate color scanning
- 👍 Fantastic app and product
- 👍 Easy to use (for some)
- 👍 Solid app, cool concept

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Poor connection issues
- 🐛 App is unusable without signal
- 🐛 Purchased libraries don't work
- 🐛 Paint libraries not downloading

**Reported bugs**

- Sensor crashes if you tab out of the app
- Takes 5-6 attempts to connect with device
- Purchased libraries not showing up
- WiFi router stopping download
- App crashes since update

**Requested features**

- Ability to save and export bulk data as .csv
- Allow tabbing out of app while collecting data
- Download paint library without phone signal
- Show multiple vendor color matches at once
- Full UI overhaul with iOS conventions


## Frequently asked questions

### Is Roll Calculator free?

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

### Is Nix Toolkit free?

Nix Toolkit is free to download, with in-app purchases available.

### Which has better reviews, Roll Calculator or Nix Toolkit?

Nix Toolkit is rated higher. Roll Calculator averages 4.2 out of 5 from 11 ratings, while Nix Toolkit averages 4.7 from 190 ratings.

### Do Roll Calculator or Nix Toolkit have ads?

Neither Roll Calculator nor Nix Toolkit shows ads.

### Which is updated more often, Roll Calculator or Nix Toolkit?

Roll Calculator ships an update fortnightly, and Nix Toolkit every 6 weeks. Most recently, Roll Calculator was updated on October 14, 2026 and Nix Toolkit on October 19, 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.*