# Catalytic Converter Database vs KBI CatApp

The clearest difference is in-app purchases: KBI CatApp at none against Catalytic Converter Database's 2. Catalytic Converter Database's advantage is update cadence (every 2 months vs every 9 months) and ratings volume (20 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. Catalytic Converter Database sells 2 in-app purchases, starting at $24.99 per month. KBI CatApp asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.1 for Catalytic Converter Database against 3.0 for KBI CatApp. That said, the two scores are not equally well evidenced: Catalytic Converter Database has 20 ratings behind it against 2, so its average is the more settled of the two.

Catalytic Converter Database ships an update every 2 months, KBI CatApp every 9 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Catalytic Converter Database | KBI CatApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (20 ratings)](https://appshunter.io/ios/app/catalytic-converter-database/id1534897941/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/kbi-catapp/id6444090674/reviews) |
| Number of ratings | **20** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 54 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CONVERTERDATABASE LLC](https://appshunter.io/developer/1534897943) | [Kinsbursky Bros. Supply, Inc.](https://appshunter.io/developer/1472290520) |

## What reviewers say

### Catalytic Converter Database

[App page](https://appshunter.io/ios/app/catalytic-converter-database/id1534897941)

Access a comprehensive database of catalytic converters with real-time pricing based on XRF values. Browse by manufacturer or code, view high-quality images, and stay updated with daily additions and market rate changes.

**Highlights:** Real-time pricing updated every 15 minutes, Daily additions of new converters, Advanced search by serial number or code, Browse by manufacturer and category, Multiple high-quality product images, Smooth animated image carousels

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Converter Database Monthly | $24.99 | per month |
| Converter Database Yearly | $249.99 | per year |


### KBI CatApp

[App page](https://appshunter.io/ios/app/kbi-catapp/id6444090674)

Access a comprehensive database of catalytic converter prices, updated daily based on real-time market data and in-house laboratory analysis. Find accurate valuations for your converters.

**Highlights:** Extensive catalytic converter price list, Daily price updates, In-house laboratory analysis, XRF and ICP instrumentation data, Market-based pricing (platinum, palladium, rhodium)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Catalytic Converter Database free?

Catalytic Converter Database is free to download, with in-app purchases available.

### Is KBI CatApp free?

KBI CatApp is free to download, with no in-app purchases.

### Which has better reviews, Catalytic Converter Database or KBI CatApp?

Catalytic Converter Database is rated higher. Catalytic Converter Database averages 3.1 out of 5 from 20 ratings, while KBI CatApp averages 3.0 from 2 ratings.

### Do Catalytic Converter Database or KBI CatApp have ads?

Neither Catalytic Converter Database nor KBI CatApp shows ads.

### Which is updated more often, Catalytic Converter Database or KBI CatApp?

Catalytic Converter Database ships an update every 2 months, and KBI CatApp every 9 months. Most recently, Catalytic Converter Database was updated on October 25, 2026 and KBI CatApp on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*