Comparison

ERoar vs Catalist

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

Head to head
About

ERoar

This app provides real-time catalytic converter values, allowing users to track stock and see market fluctuations. It also facilitates direct connections with a network of buyers for sales.

Highlights
  • Real-time catalytic converter values
  • Stock tracking and value monitoring
  • Connect with a network of buyers
  • Buyer directory for potential customers
  • Market-linked pricing
Features
Read full description

E-Roar is the first truly independent source for accurate Catalytic Converters values; market linked in real-time to ensure you get the right price...every time! E-Roar allows you to track your stock, and instantly see its value. You can even see whether or not your stock's value has gone up or down. E-Roar allows you to connect to and choose from a network of buyers. You can then contact them directly and make a sale. Buyers can register to be added to our directory, allowing potential customers to find you. ERoar is subject to Apple's standard terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Catalist

Read full description

Catalist is a professional application for registered users that enables the accurate valuation of car catalytic converters. With Catalist, you will quickly and accurately know the value of your catalytic converter using current market data. In order to use the valuation function, the purchase of an in-app subscription is required. We offer convenient subscription plans tailored to the needs of both individuals and large companies. Terms of use: https://www.catalistapp.com/terms-and-conditions

Screenshots

ERoar3 screens
Catalist4 screens

Verdict

The call

The clearest difference is update cadence: Catalist at every 4 weeks against ERoar's every 5 months. Catalist also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. ERoar sells 1 in-app purchase, starting at $9.99 per month and Catalist sells 5 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ERoar ships an update every 5 months, Catalist every 4 weeks. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard3 real differences ยท 4 level
ERoar versus Catalist: the parameters behind the verdict, then further details
ParameterERoarCatalist
PriceFreeFree
Update frequencyEvery 5 monthsEvery 4 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumโ€”
DevicesiPhoneiPhone, iPad, iPod โ€” better
Requires iOS17.015.1 โ€” better
Further details โ€” not scored
Size3 MB29 MB
Age rating17+4+
DeveloperERoar DigitalMarcin Biczysko

In-app purchases

1 purchases

ERoar

Subscriptions1
  • Premium3 Months trial$9.991 Month
5 purchases

Catalist

Subscriptions5
  • Starter$12.991 Month
  • Business$34.991 Month
  • Professional$89.991 Month
Show 2 more
  • Professional$99.993 Months
  • Professional Plus$299.991 Year

Questions

Is ERoar free?
ERoar is free to download, with in-app purchases available.
Is Catalist free?
Catalist is free to download, with in-app purchases available.
Do ERoar or Catalist have ads?
Neither ERoar nor Catalist shows ads.
Which is updated more often, ERoar or Catalist?
ERoar ships an update every 5 months, and Catalist every 4 weeks. Most recently, ERoar was updated on September 22, 2026 and Catalist on September 20, 2026.

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