Comparison

Highline Fast vs Chassis.build

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Highline Fast

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
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Control your smart home experience with Highline Fast by Highline Internet. Fully manage your network with parental controls, creating guest networks, monitoring network usage, and network security.

About

Chassis.build

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
Read full description

Your project car. All in one place. Chassis brings your car’s parts, tasks, notes, and purchase records together. Document what you’ve changed, organize the next job, and keep useful details with the car they belong to. DOCUMENT YOUR BUILD Record parts and work by vehicle system. Save part numbers and purchase details, and keep a history of items you’ve installed, removed, sold, or kept as spares. TRACK YOUR TASKS Organize jobs into lists, set priorities, and break work into checklists. Add due dates when needed and revisit completed tasks. SAVE NOTES FOR EACH CAR Keep measurements, procedures, part numbers, and other references together. Add photos, pin useful notes, and review imported text before saving. RECORD YOUR PURCHASES Keep purchase details with each car and review the amounts you’ve recorded in Purchases. BUILD SHEETS. SHARE YOUR BUILD. Choose Highlights or Full Build, preview your Build Sheet in light or dark, and save it to Photos as an image to share. PRIVATE BY DESIGN Use Chassis offline without a separate account. Your records stay on your iPhone, with private iCloud sync when available. Export each car’s records for backup and portability.

Screenshots

Highline Fast4 screens
Chassis.build4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
Highline Fast versus Chassis.build: the parameters behind the verdict, then further details
ParameterHighline FastChassis.build
PriceFreeFree
Rating4.7 (193 ratings)5.0 (1 ratings) — better
Positive reviews47.8% of reviews100.0% of reviews — better
Number of ratings193 — better1
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better26.2
Further details — not scored
Size138 MB18 MB
Age rating4+4+
DeveloperHighline InternetWILLIAM TRADD MCCORKLE

Customer experience

Highline Fast

All ratings191 ratings
Positive95.3%
Neutral0.5%
Negative4.2%
Written reviews23 reviews
Positive47.8%
Neutral4.3%
Negative47.8%

Chassis.build

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Highline Fast

Reported bugs

22 issues
  • App crashes
  • App is slow
  • App never functions properly
  • App constantly slow
  • App has lots of bugs
Show 17 more
  • App doesn't work most of the time
  • App unable to load for days
  • Black screen with warning
  • App saying 'no activity' when there has been
  • App freezing constantly
  • App barely functions
  • New update removed settings
  • App forgotten hardware
  • Pause a device rarely works
  • App unstable
  • App crashes on iPhone 14
  • GE lightbulb connection issue
  • App dysfunctional
  • Internet unstable
  • App useless with own router
  • App will not allow old router to be deleted
  • App requires router to be onboarded

Requested features

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

Chassis.build

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Highline Fast

No in-app purchases

3 purchases

Chassis.build

One-time3
  • Small Tip$2.99
  • Medium Tip$9.99
  • Large Tip$24.99

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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