Comparison

Comp 2.0 vs My Build Vault

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

Head to head
About

Comp 2.0

Enhance your 1998.5-2002 24V Cummins diesel engine's performance with on-the-fly adjustments. Fine-tune fueling, accelerator pedal response, and timing for significant power gains.

Highlights
  • On-the-fly adjustability via Bluetooth
  • Fine-tune low boost fueling
  • Adjust fuel delivery based on pedal position
  • Optimize timing for power curves
  • Gains of 40-150 HP and 150-380 TQ
  • Supports aftermarket injectors and turbos
Features
Read full description

The COMP box has dominated the 1998.5-2002 24V Cummins market for two decades and put Edge Products on the map in the early diesel performance era. With so many VP44 trucks still on the road, we’ve revamped our COMP to offer dominating performance gains with the industry’s latest technology. Our all-new Bluetooth wireless switch offers on-the-fly adjustability giving complete control over the driving experience. The mobile App offers fine tuning adjustment for low boost fueling, fuel delivery based on Accelerator Pedal Position, and timing to dial in your power curve for aftermarket injectors and larger turbo combinations. Breathing new life into your 5.9L Cummins, COMP offers gains from 40-150 HP, 150-380 TQ, even more RPM, and power available for heavily modified applications.

About

My Build Vault

This app helps car enthusiasts meticulously track vehicle modifications, performance data, and important documents. It allows users to log parts, costs, and installation details, monitor performance metrics, and store vehicle-related paperwork. Features include AI invoice scanning and VIN decoding for comprehensive build management.

Highlights
  • Track modifications across 7 categories
  • Log performance metrics like dyno runs and acceleration
  • Store and manage vehicle documents with expiry alerts
  • Generate professional build sheets for various purposes
  • AI-powered invoice scanning for automatic data extraction
  • VIN decoder for factory specifications
  • Fleet management for multiple vehicles
Features
Read full description

Build Vault is the ultimate vehicle modification tracker for car enthusiasts, builders, and collectors. Document every detail of your build — from bolt-ons to full engine swaps — with photos, costs, vendor info, and installation details all in one place. TRACK YOUR MODIFICATIONS Log every mod across 7 categories: Engine, Suspension, Wheels, Brakes, Drivetrain, Interior, and Exterior. Record part names, brands, part numbers, purchase price, labor cost, vendor, installation date, and status. Attach before and after photos to see your build evolve. PERFORMANCE LOGGING Record dyno runs with horsepower and torque numbers. Log quarter-mile times, 0-60 runs, trap speeds, boost levels, and corner weights. Track how each modification impacts your build's performance over time. DOCUMENT VAULT Store registration, title, insurance, invoices, receipts, warranties, service records, and inspection documents. Multi-page scanning, expiration date tracking, and automatic alerts when documents are about to expire so you never miss a renewal. MILEAGE TRACKING Log odometer readings over time with visual charts. See mileage at each modification install and performance test for a complete build timeline. BUILD SHEET EXPORT Generate professional build sheets in four templates — Sale, Insurance, Car Show, and Minimal. Export as PDF, CSV, or JSON. Perfect for selling your vehicle, filing insurance claims, or displaying at car shows. BUILD MILESTONES Track your build stages from stock to fully built. Set milestones, mark them complete, and document your progression from Stage 1 to Stage 3 and beyond. FLEET INSIGHTS Own multiple vehicles? See total investment, combined horsepower, category spending breakdowns, and fleet leader rankings — most powerful, lightest, best power-to-weight ratio, and more. AI INVOICE SCANNER (PRO) Snap a photo of any parts invoice or receipt. AI automatically extracts item names, prices, part numbers, and labor costs, then categorizes them for one-tap import into your mod list. VIN DECODER Enter your VIN to automatically pull factory specs — stock horsepower, torque, curb weight, drivetrain, transmission, engine code, and chassis code from the NHTSA database. CLOUD SYNC (PRO) Keep your builds synced across all your Apple devices with iCloud. Your data is always backed up and accessible wherever you are. FREE TO USE Build Vault is free with up to 1 vehicle, 15 mods, 20 documents, and 2 build sheet exports per month. Upgrade to Build Vault Pro for unlimited everything, cloud sync, AI invoice scanning, and full VIN decode. BUILD VAULT PRO — $29.99/year • Unlimited vehicles, mods, and photos • Unlimited documents and build sheet exports • AI-powered invoice scanning • iCloud sync across devices • Full VIN decode with factory specs Terms of Use: https://mybuildvault.com/terms/ Privacy Policy: https://mybuildvault.com/privacy/

Screenshots

Comp 2.04 screens
My Build Vault4 screens

Verdict

The call

The clearest difference is rating: My Build Vault at 5.0 against Comp 2.0's 3.8. My Build Vault also leads on update cadence (every 2 months vs every 11 months). Comp 2.0's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price 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. My Build Vault sells 1 in-app purchase, starting at $19.99 per year. Comp 2.0 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

My Build Vault holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Comp 2.0 has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Comp 2.0 ships an update every 11 months, My Build Vault every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 2 level
Comp 2.0 versus My Build Vault: the parameters behind the verdict, then further details
ParameterComp 2.0My Build Vault
PriceFreeFree
Rating3.8 (6 ratings)5.0 (1 ratings) — better
Number of ratings6 — better1
Update frequencyEvery 11 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size139 MB28 MB
Age rating4+4+
DeveloperHolley Performance ProductsTim Eberhard

Customer experience

Comp 2.0

All ratings6 ratings
Positive50.0%
Neutral33.3%
Negative16.7%

My Build Vault

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Comp 2.0

No in-app purchases

1 purchases

My Build Vault

Subscriptions1
  • My Build Vault Pro$19.991 Year

Questions

Is Comp 2.0 free?
Comp 2.0 is free to download, with no in-app purchases.
Is My Build Vault free?
My Build Vault is free to download, with in-app purchases available.
Which has better reviews, Comp 2.0 or My Build Vault?
My Build Vault is rated higher. Comp 2.0 averages 3.8 out of 5 from 6 ratings, while My Build Vault averages 5.0 from 1 ratings.
Do Comp 2.0 or My Build Vault have ads?
My Build Vault shows ads; Comp 2.0 does not.
Which is updated more often, Comp 2.0 or My Build Vault?
Comp 2.0 ships an update every 11 months, and My Build Vault every 2 months. Most recently, Comp 2.0 was updated on November 3, 2026 and My Build Vault on October 31, 2026.

Other comparisons