Cat DB - Catalytic Converters

Review by eFreeware

Most apps in the business category help you organize something. Cat DB is narrower and more interesting than that: it is a pricing and identification tool for catalytic converters, built around a catalog of 233 million cars that you can search by year, make and model or by VIN. That is a very specific job, and the app does not pretend to be anything else.

The developer, D8ta Technologies LLC, is selling this to people who handle junk cars and cat cores as a working routine: scrapyard staff, salvage buyers, mechanics who pull converters, and anyone who prices them before selling. If that describes your work, the appeal is obvious. If you have never had to identify a converter under a car, there is not much here for you.

The app is free to download, carries no ads, and offers in-app purchases. It has been on Google Play since April 2023 and currently sits at a 4.6 average from 185 ratings, with more than 10,000 installs. Those numbers suggest a small but engaged audience rather than a mass-market tool, which fits the niche.

Searching by VIN, vehicle or code

The core of Cat DB is lookup. You enter a VIN, or scan it, or type in the year, make and model of the vehicle, and the app returns catalytic converter prices along with how many cats that vehicle carries. The developer describes the database as the largest of its kind in the USA, with more than 20,000 listings, of which over 3,000 are generics. I would treat the size claim as marketing, but the underlying idea is sound: one place to check what a converter is worth before you commit to a price.

Not every converter has a legible code, and the app accounts for that. You can search by a partial code, entering as much as you can actually read off the part, then narrow the results with a set of more than 28 filters covering things like size, shape, brand, sensors and pipes. There is also a search that skips the code entirely and works from those same specifications, which is the path I would expect to use most often on a converter that has been under a car for fifteen years.

Identification is helped by a large photo library. The developer lists more than 62,000 zoomable photos covering multiple angles, including shots with and without the shield and assembly photos, plus a 3D model. A shield-removed view strips the shields out of the results so you can match what you are actually holding. For anyone who has squinted at a rusted housing trying to decide between two similar codes, that combination is the part of the app that matters most.

Pricing tools, cart and market data

Once a converter is identified, Cat DB moves into pricing. Any plan lets you adjust margins and hide every price with one tap. When you add cats to a cart, they are saved at whatever profit margin percentage you applied at that moment, and a current value view later shows the updated price along with the gain or loss against that original figure. The cart itself is editable by full and partial material content per converter, with a swipe to delete.

The pricing side is tied to the metals market. Over 100 cats can be covered in a single Total Assay Metals report. Converter prices move with the PGM market, so treating any single figure as fixed would be a mistake.

There are also two views aimed at buying junk cars. A price range view gives you a best and worst case based on the code, and a fixed price view shows what you would be paid for a converter with no readable code, the generic price. Both are the kind of thing that helps you make an offer without overcommitting. You can also send your cart to a nearby buying company with a tap, and the prices shown come from that buyer, though the buyers are third-party companies based in the USA.

The most recent update added instant sales receipts along with purchase order and vendor saving, for buyers on the Enterprise Plus plan, alongside bug fixes and interface and performance updates.

Search limits, plans and what you need

Cat DB is free to download and free of ads, but the searching is metered. The free tier allows three searches a day, whether by code or without one, and three more each month by vehicle or VIN. That is enough to check the occasional converter, and not much more. You can browse for 30 days without creating a login; staying on the free plan after that requires an account. No credit card or commitment is involved.

If your volume is higher, the Level 2 trial gives unlimited code and no-code searches plus five vehicle or VIN searches daily, free for seven days. Beyond that, high-volume search plans start at $11.99 per month or $114.99 per year, and there are four plans in total, which you can move between as your needs change. The app does offer in-app purchases, so the subscription side is real money, and the trial is the sensible way to find out whether the paid tiers fit your workflow.

One practical requirement is worth knowing before you install: browsing works for a month without an account, but the Free Forever plan depends on signing up. Live market prices, the metals graph and buyer-backed pricing all track the PGM market, and converter prices can change with it. This is a tool for checking today's number, not a static price list.

How I would use it day to day

The workflow the app is built around runs in a clear order: identify, price, decide. On a car with a readable code, I would start with a partial code search and use the filters to close in, checking the photos to confirm the match. On a converter with nothing legible left, the no-code search and the fixed price view for generics are the more realistic route. The price range view then gives you a defensible bracket for an offer on the whole vehicle.

The cart is where the app earns its keep over a paper list or a spreadsheet. Saving cats at a margin and revisiting them against current values turns pricing into something you can track rather than guess. If you buy and sell regularly, that record is the difference between knowing your margin and hoping for one.

The developer also rewards contributions. You can earn free searches by contributing expertise, photos, videos or support to the community, and there is free photograding help through text, Facebook or email if you cannot identify something. For a niche tool, that kind of human fallback is a reasonable safety net, especially on unusual converters that never made it into a catalog cleanly.

The straightforward advice is to start on the free plan, see how often you hit the search ceiling, and only then consider the trial. Three code searches a day goes quickly if you are pricing a batch of cars; it is generous if you check a converter now and then.

A pricing tool built for converter work

Cat DB does one job and does it in depth. The combination of VIN and vehicle lookup, partial and no-code searching, a large photo library, margin-aware cart pricing and live metals data covers the full path from identifying a converter to putting a number on it. The free tier is genuinely usable at low volume, and the subscription tiers exist for people who search all day.

The trade-offs are the ones the app itself sets out. Searching is capped on the free plan, the higher tiers cost money, live pricing follows the PGM market, and the buyers behind the price data are third-party companies. None of that is hidden, but all of it shapes whether the app fits you.

I would point this at scrapyard operators, salvage buyers, mechanics and mobile cat buyers who handle converters often enough that accurate pricing matters to their margin. For everyone else, it is a specialized reference tool that will sit unused.

What's new in version 1.26.2

Added instant sales receipts + PO & vendor saving, for all buyers on the Enterprise Plus plan. + Bug fixes + Interface and performance updates Contact us directly with your feedback and so we can keep making the improvements your business needs. Questions or suggestions? Email [email protected] or text us at 505-273-3473. Has Cat DB boosted your business? Leave us a review!