Comparison

Eco Cat App vs WheelSpotter

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

Head to head
About

Eco Cat App

This app provides real-time pricing for scrap catalytic converters, featuring a comprehensive catalog with over 20,000 items. It helps users determine fair market value for their catalytic converters, improving their negotiating position.

Highlights
  • Real-time catalytic converter pricing
  • Extensive catalog with 20,000+ items
  • Search by car brand or manufacturer
  • Accurate precious metal content analysis
  • Fair deal appraisal for sellers
  • On-site assessment by purchasers
Features
Read full description

Ecotrade Group is a leading authorized purchaser of scrap catalytic converters and over the last 15 years has built up a huge database of knowledge from which the company has developed a comprehensive catalogue that lists more than 20000 items and increasing almost daily. This online catalytic converter price book comes pictures and you can conveniently look up the value of your spent catalytic converters either by car brand or catalytic converter manufacturers. Being at the forefront of the catalyst recycling industry, we commit to provide you with the most complete and comprehensive catalytic converter catalog prices updated 3 times per day to reflect market prices. Ecotrade has invested heavily in cutting edge technology that is designed, in conjunction with laboratory analysis, to precisely measure, to an extremely high level of accuracy, the precious metal content in any single used catalytic converter. Our custom-designed fully equipped laboratories can quickly and efficiently carry out materials analysis, using several methods including X-Ray Fluorescence (XRF) testing. In scrap catalytic converter transactions, the relationship between buyers and sellers is fundamentally unbalanced. Buyers invariably have all the power; thus, for sellers, it means selling their used catalysts can be an unpleasant process. By providing quick and easy scrap cat appraisals that quickly let sellers know whether they’re getting a fair deal or not, Ecotrade Group levels the playing field and improves sellers’ negotiating positions. Also, depending on your location in the world, if you want to sell your catalytic converters, our experienced and conscientious purchasers can personally visit premises to sort and assess the worth of your material. Buy and sell you scrap catalytic converters with Ecotrade Group ! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WheelSpotter

Identify car or truck wheels by make, model, year, style, or part number. Visually sort wheels from photos or find by partial manufacturer numbers. Access pricing for new, used, and remanufactured wheels, and locate them for sale online.

Highlights
  • Identify wheels by make, model, year, style, diameter, width, material, finish, bolt count
  • Visual sorting using photos
  • Search by partial manufacturer part number
  • Find Hollander Interchange numbers
  • View new, used, and remanufactured wheel prices
  • Locate wheels for sale online
  • Access data for over 14,000 Hollander Interchange wheels
Read full description

WheelSpotter app is the most productive way to identify the Hollander Interchange number or manufacturer part number for a wheel. Filter by… Make - Model - Year Style Diameter Width Material Finish Bolt Count … or take photo then visually sort… … or find by partial manufacturer number… … or find any Hollander Interchange number. WheelSpotter app is the fastest way to sort through a pile of wheels. Its bar chart indicates whether to scrap a wheel before you perform the work of identifying its part number. WheelSpotter app is the convenient way to learn the price of the wheel in new condition, the price of the wheel recently sold in used condition, or the price of the wheel recently sold in remanufactured condition. WheelSpotter app is the convenient way to locate the wheel currently listed for sale on the web. Familiarize yourself with the wheels and wheel covers freshly added to each update of the Hollander Interchange, e.g., for version 88.02 of the Hollander Interchange, enter into the search box "Debut 8901". Look-up the details of a known Hollander Interchange number, e.g., for Hollander Interchange number 560-05130, enter into the search box "05130". Look-up a wheel from the partial manufacturer number embossed on its back, e.g., for 36117849629, enter into the search box "7849629". Set filters, e.g., enter into the search box "7 Spoke" or "Avalanche 1500". WheelSpotter app is the official Hollander Interchange wheel and wheel cover app. Use instead of the Hollander Wheel Manual which is no longer printed. Data for +14,000 Hollander Interchange wheels going back decades for Acura, Alfa-Romeo, Audi, BMW, Chrysler, Daewoo, Fiat-Lancia, Ford, General Motors, Genesis, Honda, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, Kia, Lexus, Mazda, Mercedes-Benz, Mini Cooper, Mitsubishi, Nissan, Porsche, Rover, Saab, Scion, Subaru, Suzuki, Toyota, Volkswagen, and Volvo. Original equipment wheels, not aftermarket wheels. Disclaimer: No internet connectivity is required to operate the app. Bring your iOS device to where it has Internet connectivity when you want to update the WheelSpotter app. Feature to take a photo and use it to visually sort results works for wheels, not wheel covers Paid subscription to Guide edition is required to unlock part numbers Paid subscription to Pro edition is required to unlock part numbers, prices, bar chart, and functionality to search the web Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Subscriptions may be managed by you and auto-renew may be turned off by going to your Account Settings after purchase. Payment will be charged to iTunes Account at confirmation of purchase.

Screenshots

Eco Cat App4 screens
WheelSpotter4 screens

Verdict

The call

The clearest difference is rating: Eco Cat App at 4.7 against WheelSpotter's 4.0. Eco Cat App also leads on review sentiment (88% vs 63%) and update cadence (every 2 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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. Eco Cat App sells 5 in-app purchases, starting at $24.99 per month and WheelSpotter sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Eco Cat App holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Eco Cat App has 2K ratings behind it against 31, so its average is the more settled of the two. Written reviews point the same way: 88% of Eco Cat App's written reviews are positive against 63% of WheelSpotter's.

UpkeepUpdate frequency

Eco Cat App ships an update every 2 weeks, WheelSpotter every 2 months. The most recent releases landed on November 9, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
Eco Cat App versus WheelSpotter: the parameters behind the verdict, then further details
ParameterEco Cat AppWheelSpotter
PriceFreeFree
Rating4.7 (2K ratings) — better4.0 (31 ratings)
Positive reviews88.0% of reviews — better62.5% of reviews
Number of ratings2K — better31
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size92 MB917 MB
Age rating4+4+
DeveloperEcotrade Tech Company LimitedSalvage Auto Data LLC

Customer experience

Eco Cat App

All ratings1,997 ratings
Positive93.1%
Neutral2.8%
Negative4.1%
Written reviews526 reviews
Positive88.0%
Neutral2.9%
Negative9.1%

WheelSpotter

All ratings31 ratings
Positive77.4%
Neutral0.0%
Negative22.6%
Written reviews16 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

Bugs and requests

Eco Cat App

Reported bugs

2 issues
  • Login issues and account verification problems
  • Occasional app crashes or freezes

Requested features

4 requests
  • More free search credits
  • Ability to save favorite models
  • Integration with scrap buyer platforms
  • Localized pricing for different regions

WheelSpotter

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Eco Cat App

Subscriptions4
  • Gold - Monthly$24.991 Month
  • Platinum - Monthly$28.901 Month
  • Gold - Yearly$219.991 Year
Show 1 more
  • Platinum - Yearly$289.001 Year
One-time1
  • Pass searches$12.99
4 purchases

WheelSpotter

Subscriptions4
  • Unlock Part Number3 Days trial$4.997 Days
  • Unlock Part Number and Price3 Days trial$6.997 Days
  • Unlock Part Number Annual3 Days trial$199.991 Year
Show 1 more
  • Unlock Part # and Price Annual3 Days trial$249.991 Year

Questions

Is Eco Cat App free?
Eco Cat App is free to download, with in-app purchases available.
Is WheelSpotter free?
WheelSpotter is free to download, with in-app purchases available.
Which has better reviews, Eco Cat App or WheelSpotter?
Eco Cat App is rated higher. Eco Cat App averages 4.7 out of 5 from 2K ratings, while WheelSpotter averages 4.0 from 31 ratings.
Do Eco Cat App or WheelSpotter have ads?
Neither Eco Cat App nor WheelSpotter shows ads.
Which is updated more often, Eco Cat App or WheelSpotter?
Eco Cat App ships an update every 2 weeks, and WheelSpotter every 2 months. Most recently, Eco Cat App was updated on November 9, 2026 and WheelSpotter on November 2, 2026.

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