Comparison

Smog Test History vs VIN decoder & Window Sticker

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

Head to head
About

Smog Test History

Scan a California vehicle's license plate to view its smog test history and results. Verify the authenticity of smog certificates and access other useful vehicle information directly from the DMV.

Highlights
  • License plate scanning
  • Smog test history lookup
  • Vehicle information retrieval
  • DMV data source
  • Certificate authenticity check
  • Unlimited searches
Features
Read full description

Want to know the emissions history of a California vehicle?Wondering if the car you are considering buying has passed smog? Or if it had any issues doing so? How about if a smog certificate is authentic? Well now you can find out! Just snap a picture of a car's License Plate and see all of the smog tests that car has ever taken, and the results, along with other useful vehicle information! How it works: The app uses the iPhone camera to snap a picture of a License Plate (you can also upload a photo from your Album), and as long as it is legible, the app will automatically convert the plate number to text and just press submit to see the results. The vehicle data is sourced directly from the DMV, so it is the "official" record of the state, so you know it is accurate! As far as the inputted license plate numbers, the app itself does not store the number or the vehicle's data. This app is completely free, has no ads, and you can make an unlimited amount of searches! Note: Not all vehicles will show results, as new license plate numbers do not yet have associated smog tests, and some vehicles (like the Prius) are exempt.

About

VIN decoder & Window Sticker

Instantly decode any vehicle's VIN to reveal its specifications, original window sticker, and comprehensive history. Access accident records, mileage, title checks, and maintenance insights. Supports classic cars and global coverage.

Highlights
  • Free VIN Decoder
  • Vehicle History Reports
  • Window Sticker Lookup
  • License Plate Lookup (US)
  • Auction Photos & Records
  • Maintenance & Warranty Insights
  • Classic VIN Check
Features
Read full description

VIN Decoder & Window Sticker Unlock the full story of any vehicle! Instantly scan or enter a VIN to view specs, original window stickers, and full vehicle history reports. Perfect for buyers, sellers, dealers, and enthusiasts. Key Features: • Free VIN Decoder - Instantly reveal make, model, year, trim, engine, and transmission. • Vehicle History Reports - Accident records, mileage, title checks, recalls, ownership history, theft, liens, and service records. • Window Sticker Lookup - View MSRP, factory features, options, and trim details. • License Plate Lookup (U.S. only) - Scan or type a plate for detailed vehicle info. • Auction Photos & Records - Discover past auction sales, including multiple images. • Maintenance & Warranty Insights - Track upcoming service, recalls, and repair history. • Garage Feature - Save vehicles you own or are researching. • Classic VIN & Chassis Check - Support for pre-1981 vehicles and classic cars. • Global Coverage - USA, Canada, Africa, Europe, Latin America. What You Can Do with Detailed Vehicle History VIN Decoder App • Free VIN Decoder - Instantly reveal make, model, trim, year, engine, transmission, and more. Save the vehicle in garage and access details anytime. • Vehicle History Reports - Access accident records, mileage rollbacks, title checks, ownership history, recalls, theft records, lien/loan data, natural disaster damage, auction records with photos, and service/maintenance history. • Window Sticker Lookup - Retrieve the original MSRP, factory-installed features, options, and trim-level equipment, perfect for buyers, dealers, sellers, and enthusiasts. • License Plate Lookup (U.S. only) - Scan or type in a plate to access the same detailed history and specs. • Auction Records & Photos - Discover if a car has been through an auction, with up to 10+ photos when available. • Classic VIN Number & Chassis Number Check - Lookup classic cars built before 1981. • Maintenance & Warranty Insights - View upcoming service schedules, manufacturer recalls, and repair history. • VIN & Plate Scanner - Save time by scanning instead of typing. • 24/7 Live Chat Support - Get assistance whenever you need it. • Save Vehicles to Your Garage - Keep a personal list of cars, motorcycles, or classics you’re researching or own, and revisit their history and details anytime. Supported Countries & Regions Our data coverage is global: USA - including all 50 states (with license plate lookup) Canada South Africa & other African countries Europe - most EU countries Latin America - including Mexico, Brazil, Chile, Argentina & more Supported Vehicle Types The VIN Decoder & Window Sticker app by Detailed Vehicle History supports: • Passenger Cars - Sedans, SUVs, Hatchbacks, Crossovers, Coupes, Convertibles, Wagons, Luxury vehicles • Trucks - Light-duty, heavy-duty, & semi trucks • Motorcycles & Scooters • Classic & Vintage Cars - Pre-1981 vehicles decoded via chassis number check • Electric & Hybrid Vehicles Where to Find Your VIN Dashboard (driver’s side) Door jamb (driver’s side) Engine block or chassis Insurance, registration, or title documents Supported Brands Covers nearly all makes and models worldwide: Cars & Trucks: Ford, Toyota, Honda, BMW, Audi, Mercedes-Benz, Tesla, Volkswagen, Hyundai, Nissan, Chevrolet, Lexus, Jeep, Dodge, and more. Motorcycles: Harley-Davidson, Yamaha, Kawasaki, Ducati, Triumph, Suzuki, Honda, BMW Motorrad, and others. Classic Cars: Pre-1981 vehicles supported - 5 - 14 digit VINs Need Help? We’re available 24/7 through live chat and customer support. Download VIN Decoder & Window Sticker - Powered by Detailed Vehicle History today and unlock not just the specs, but also the complete history of any car, truck, motorcycle, or classic vehicle.

Screenshots

Smog Test History3 screens
VIN decoder & Window Sticker4 screens

Verdict

The call

The clearest difference is rating: VIN decoder & Window Sticker at 4.4 against Smog Test History's 3.7. VIN decoder & Window Sticker also leads on ratings volume (68 vs 3). Smog Test History's advantage is in-app purchases (none vs 15). On price, ads, device support and iOS requirement 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. VIN decoder & Window Sticker sells 13 one-off in-app purchases. Smog Test History asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VIN decoder & Window Sticker holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: VIN decoder & Window Sticker has 68 ratings behind it against 3, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
Smog Test History versus VIN decoder & Window Sticker: the parameters behind the verdict, then further details
ParameterSmog Test HistoryVIN decoder & Window Sticker
PriceFreeFree
Rating3.7 (3 ratings)4.4 (68 ratings) — better
Positive reviews—89.7% of reviews
Number of ratings368 — better
Update frequency—Every 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better13.0
Further details — not scored
Size10 MB120 MB
Age rating4+4+
DeveloperBaber FarrukhVehicle History

Customer experience

Smog Test History

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

VIN decoder & Window Sticker

All ratings67 ratings
Positive83.6%
Neutral4.5%
Negative11.9%
Written reviews58 reviews
Positive89.7%
Neutral0.0%
Negative10.3%

Bugs and requests

Smog Test History

Not enough reviews yet to summarise bugs or requests.

VIN decoder & Window Sticker

Reported bugs

3 issues
  • Report not showing up
  • App stops working offline
  • Unexpected charges

Requested features

4 requests
  • Combine VIN report and sticker purchase
  • Clarify pricing on website
  • Improve accuracy of window stickers
  • Offline VIN decoding functionality

In-app purchases

None

Smog Test History

No in-app purchases

13 purchases

VIN decoder & Window Sticker

One-time13
  • Basic2 variants$19.99
  • Silver2 variants$29.99
  • Gold$49.99
Show 10 more
  • Gold$59.99
  • Platinum$79.99
  • Diamond$79.99
  • Basic$99.99
  • Silver$199.99
  • Gold$299.99
  • Gold$349.99
  • Business$449.99
  • Platinum$499.99
  • Platinum$599.99

Questions

Is Smog Test History free?
Smog Test History is free to download, with no in-app purchases.
Is VIN decoder & Window Sticker free?
VIN decoder & Window Sticker is free to download, with in-app purchases available.
Which has better reviews, Smog Test History or VIN decoder & Window Sticker?
VIN decoder & Window Sticker is rated higher. Smog Test History averages 3.7 out of 5 from 3 ratings, while VIN decoder & Window Sticker averages 4.4 from 68 ratings.
Do Smog Test History or VIN decoder & Window Sticker have ads?
Neither Smog Test History nor VIN decoder & Window Sticker shows ads.

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