# Highline Fast vs Chassis.build

The clearest difference is review sentiment: Chassis.build at 100% against Highline Fast's 48%. Chassis.build also leads on update cadence (every 4 days vs every 3 months) and rating (5.0 vs 4.7). Highline Fast's advantage is in-app purchases (none vs 3) and ratings volume (193 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Chassis.build sells 3 one-off in-app purchases. Highline Fast asks for nothing beyond the download.

Chassis.build holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Highline Fast has 193 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 48% of Highline Fast's written reviews are positive against 100% of Chassis.build's.

Highline Fast ships an update every 3 months, Chassis.build every 4 days. The most recent releases landed on October 22, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Highline Fast | Chassis.build |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (193 ratings)](https://appshunter.io/ios/app/highline-fast/id1588029676/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chassisbuild/id6810934275/reviews)** |
| Number of ratings | **193** | 1 |
| Positive reviews | 47.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 138 MB | 18 MB |
| Requires iOS | **16.0** | 26.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Highline Internet](https://appshunter.io/developer/1588029678) | [WILLIAM TRADD MCCORKLE](https://appshunter.io/developer/6810934277) |

## What reviewers say

### Highline Fast

[App page](https://appshunter.io/ios/app/highline-fast/id1588029676)

Manage your smart home network with advanced controls. Features include robust parental controls, guest network creation, usage monitoring, and enhanced network security for a safer online environment.

**Highlights:** Parental controls, Guest network creation, Network usage monitoring, Network security, Smart home management

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Phenomenal internet quality
- 👍 Great customer support
- 👍 Fast internet speeds
- 👍 Intuitive app design
- 👍 Device prioritization options

**What reviewers complain about**

- 🐛 App is slow and crashes
- 🐛 App frequently not functioning
- 🐛 New version is worse
- 🐛 App has bugs and glitches
- 🐛 App doesn't work most of the time

**Reported bugs**

- App crashes
- App is slow
- App never functions properly
- App constantly slow
- App has lots of bugs

**Requested features**

- App needs to be updated
- Program should be on desktop, not phone app
- App update would be nice


### Chassis.build

[App page](https://appshunter.io/ios/app/chassisbuild/id6810934275)

Organize your project car details, including parts, tasks, and notes. Track installed and desired modifications, manage to-do lists with priorities, and save important information like measurements and procedures. Generate a shareable build sheet image of your car's current status.

**Highlights:** Track project car parts and modifications, Manage tasks with priorities and due dates, Save notes, measurements, and procedures, View car overview and progress, Generate shareable build sheet images, Offline access and private iCloud sync

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $2.99 | one-time |
| Medium Tip | $9.99 | one-time |
| Large Tip | $24.99 | one-time |


## Frequently asked questions

### Is Highline Fast free?

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

### Is Chassis.build free?

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

### Which has better reviews, Highline Fast or Chassis.build?

Chassis.build is rated higher. Highline Fast averages 4.7 out of 5 from 193 ratings, while Chassis.build averages 5.0 from 1 ratings.

### Do Highline Fast or Chassis.build have ads?

Neither Highline Fast nor Chassis.build shows ads.

### Which is updated more often, Highline Fast or Chassis.build?

Highline Fast ships an update every 3 months, and Chassis.build every 4 days. Most recently, Highline Fast was updated on October 22, 2026 and Chassis.build 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.*