Comparison

Valdi Catalyst Market vs DF Auto

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

Head to head
About

Valdi Catalyst Market

This app provides quick and safe valuations for used catalytic converters based on their precious metal content. It uses a comprehensive catalog compiled since 2008, updated three times daily with market prices for palladium, rhodium, and platinum.

Highlights
  • Catalytic converter valuation
  • Precious metal content analysis (Pd, Rh, Pt)
  • Real-time market price updates
  • Extensive catalog compiled since 2008
  • Safe buying and selling tool
Features
Read full description

Katalizatory.org is a company with many years of experience in recycling used catalytic converters, which has created a catalog covering 20 thousand items. The catalytic converter valuation program enables quick and safe valuation of the value of a used catalytic converter containing precious metals: palladium (Pd), rhodium (Rh), platinum (Pt), according to the original number located on the catalytic converter housing. The program is updated three times a day based on market prices. The database has been meticulously compiled since 2008, and catalytic converters with specific numbers have been subjected to cyclic and detailed analysis. A significant portion of catalytic converters with specific original numbers has undergone multiple verifications, allowing for an estimate of the precious metal content in the catalytic converter with an extremely high degree of accuracy. Based on vast experience and modern technologies allowing for precise measurement of precious metal content, the catalog represents an ideal and SAFE tool providing both sellers and buyers with access to quick and effective valuations. Buy and sell safely with the Valdi Catalyst Market catalog! (EULA) https://katalizatory.org/valdi-catalyst-market/TosAndPrivacyPolicy

About

DF Auto

Features
Read full description

*Real-Time Pricing:* Access an up-to-date catalytic converter price list with real-time updates to ensure accurate pricing information. *Currency Selection:* Choose your preferred currency for seamless calculations, allowing users from around the world to utilize the app with ease. *LME Price Updates:* Stay informed about the latest LME (London Metal Exchange) prices, enabling users to make informed decisions based on market fluctuations. *Cart Functionality:* Add desired catalytic converters to your cart for easy management and purchase. *Invoice Generation:* Generate professional invoices directly within the app, including customizable fields for customer name, email, and phone number. *Search and Filter:* Effortlessly search for catalytic converters and filter results by brand to quickly find the desired products. *Favorites:* Save frequently accessed converters to your favorites list for quick access and reference. *User-Friendly Interface:* Enjoy an intuitive and user-friendly interface designed to simplify the buying and selling process for both professionals and enthusiasts alike. *Streamlined Experience:* Whether you're a seasoned buyer or new to the industry, our app is tailored to provide a seamless experience for all users. *Download Today:* Revolutionize your catalytic converter buying experience by downloading our app today and unlock the full potential of streamlined pricing and invoicing solutions.

Screenshots

Valdi Catalyst Market4 screens
DF Auto4 screens

Verdict

The call

The clearest difference is in-app purchases: DF Auto at none against Valdi Catalyst Market's 5. DF Auto also leads on device support (3 vs 1). Valdi Catalyst Market's advantage is ads (none vs shown). On price, update cadence and iOS requirement 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. Valdi Catalyst Market sells 5 in-app purchases, starting at $39.99 per month. DF Auto asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

Scorecard3 real differences ยท 4 level
Valdi Catalyst Market versus DF Auto: the parameters behind the verdict, then further details
ParameterValdi Catalyst MarketDF Auto
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 months
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
MonetizationFreemiumโ€”
DevicesiPhoneiPhone, iPad, iPod โ€” better
Requires iOS16.415.1 โ€” better
Further details โ€” not scored
Size74 MB38 MB
Age rating4+4+
DeveloperWaldemar KonarskiMd Minhazur Rahman

In-app purchases

5 purchases

Valdi Catalyst Market

Subscriptions4
  • Gold - Monthly3 Days trial$39.991 Month
  • Platinum - Monthly3 Days trial$59.991 Month
  • Gold - Yearly3 Months trial$199.991 Year
Show 1 more
  • Platinum - Yearly3 Months trial$249.991 Year
One-time1
  • 20 Search Credits$11.99
None

DF Auto

No in-app purchases

Questions

Is Valdi Catalyst Market free?
Valdi Catalyst Market is free to download, with in-app purchases available.
Is DF Auto free?
DF Auto is free to download, with no in-app purchases.
Do Valdi Catalyst Market or DF Auto have ads?
DF Auto shows ads; Valdi Catalyst Market does not.
Which is updated more often, Valdi Catalyst Market or DF Auto?
Valdi Catalyst Market ships an update every 2 months, and DF Auto every 2 months. Most recently, Valdi Catalyst Market was updated on September 10, 2026 and DF Auto on September 18, 2026.

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