# HouseCurve vs Nix Toolkit

HouseCurve and Nix Toolkit both sit at 4.7 stars, but that hides the real split: 81% of HouseCurve's written reviews are positive against 33% of Nix Toolkit's. Nix Toolkit's advantage is iOS requirement (15.1 vs 18.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. HouseCurve sells 2 one-off in-app purchases and Nix Toolkit sells 10 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for HouseCurve against 4.7 for Nix Toolkit. Both are backed by a comparable volume of ratings — 264 and 213 respectively. Written reviews are what separate them: 81% of HouseCurve's written reviews are positive against 33% of Nix Toolkit's.

HouseCurve ships an update every 2 months, Nix Toolkit every 6 weeks. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | HouseCurve | Nix Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (264 ratings)](https://appshunter.io/ios/app/housecurve/id1470695018/reviews) | **[4.7 (213 ratings)](https://appshunter.io/ios/app/nix-toolkit/id1539500052/reviews)** |
| Number of ratings | **264** | 213 |
| Positive reviews | **80.7% of reviews** | 32.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 68 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Greg Wilding](https://appshunter.io/developer/1470695017) | [Nix Sensor Ltd.](https://appshunter.io/developer/889253267) |

## What reviewers say

### HouseCurve

[App page](https://appshunter.io/ios/app/housecurve/id1470695018)

This app provides a suite of tools for tuning audio systems, including room correction, equalizer adjustments, and subwoofer phase setting. It measures in-room frequency response and can generate filter settings for various audio systems. It's suitable for home and car audio enthusiasts looking to optimize their sound.

**Highlights:** Sine sweep and pink noise measurements, Real-time moving mic measurements, Target curve comparison and creation, Room correction filter generation (PEQ/FIR), Magnitude, phase, and group delay display, Compatibility with various audio systems

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tuning Bundle One Year | $20.00 | one-time |
| Tuning Bundle Lifetime | $70.00 | one-time |

**What reviewers like**

- 👍 Easy to use and setup
- 💰 Great value for money
- 🔊 Significantly improves sound quality
- 📱 Utilizes iPhone microphone effectively
- 🔌 Compatible with various EQ software (e.g., Equalizer APO, Roon)

**What reviewers complain about**

- 🐛 Unreliable connection issues
- 🐛 Frequent crashes or bugs
- 🐛 App asks to upgrade after purchase
- 🐛 Bluetooth connectivity issues
- 🐛 Sweep tone not detected

**Reported bugs**

- Will not connect to iPhone
- Won't connect and play after upgrades
- App keeps asking to upgrade after payment
- Cannot connect to Airplay music systems
- Bluetooth doesn't work well

**Requested features**

- True support for headphones
- Download measured plots for offline analysis
- Ability to export a zip of filters at once
- Option to normalize filters
- Clarification on Q value for EQ frequencies


### 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 HouseCurve free?

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

### Is Nix Toolkit free?

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

### Which has better reviews, HouseCurve or Nix Toolkit?

Nix Toolkit is rated higher. HouseCurve averages 4.7 out of 5 from 264 ratings, while Nix Toolkit averages 4.7 from 213 ratings.

### Do HouseCurve or Nix Toolkit have ads?

Neither HouseCurve nor Nix Toolkit shows ads.

### Which is updated more often, HouseCurve or Nix Toolkit?

HouseCurve ships an update every 2 months, and Nix Toolkit every 6 weeks. Most recently, HouseCurve was updated on October 26, 2026 and Nix Toolkit on October 29, 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.*