# Catalytic Converter Database vs Mine Locator Map

The clearest difference is rating: Mine Locator Map at 4.6 against Catalytic Converter Database's 3.1. Mine Locator Map also leads on ratings volume (367 vs 20) and update cadence (every 3 weeks vs every 2 months). Catalytic Converter Database's advantage is review sentiment (50% vs 13%) and ads (none vs shown). On price, in-app purchases, monetization model 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 and Mine Locator Map sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mine Locator Map holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: Mine Locator Map has 367 ratings behind it against 20, so its average is the more settled of the two. Written reviews complicate that: 50% of Catalytic Converter Database's written reviews are positive against 13% of Mine Locator Map's, so the app with the better star average is not the one people write more warmly about.

Catalytic Converter Database ships an update every 2 months, Mine Locator Map every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Catalytic Converter Database | Mine Locator Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (20 ratings)](https://appshunter.io/ios/app/catalytic-converter-database/id1534897941/reviews) | **[4.6 (367 ratings)](https://appshunter.io/ios/app/mine-locator-map/id1600769016/reviews)** |
| Number of ratings | 20 | **367** |
| Positive reviews | **50.0% of reviews** | 12.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 24 MB | 73 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [CONVERTERDATABASE LLC](https://appshunter.io/developer/1534897943) | [Qvyshift LLC](https://appshunter.io/developer/1536442361) |

## 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 |


### Mine Locator Map

[App page](https://appshunter.io/ios/app/mine-locator-map/id1600769016)

Discover historical and active mines, prospects, and mineral deposits across the United States. This app provides a map-based interface to locate various mining-related sites without requiring registration or subscriptions.

**Highlights:** Map of mines and prospects, Locate abandoned mines, Locate active mines, Show mineral deposits, Show processing plants, USGS MRDS data source

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $6.99 | one-time |


## Frequently asked questions

### Is Catalytic Converter Database free?

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

### Is Mine Locator Map free?

Mine Locator Map is free to download, with in-app purchases available.

### Which has better reviews, Catalytic Converter Database or Mine Locator Map?

Mine Locator Map is rated higher. Catalytic Converter Database averages 3.1 out of 5 from 20 ratings, while Mine Locator Map averages 4.6 from 367 ratings.

### Do Catalytic Converter Database or Mine Locator Map have ads?

Mine Locator Map shows ads; Catalytic Converter Database does not.

### Which is updated more often, Catalytic Converter Database or Mine Locator Map?

Catalytic Converter Database ships an update every 2 months, and Mine Locator Map every 3 weeks. Most recently, Catalytic Converter Database was updated on November 3, 2026 and Mine Locator Map on November 3, 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.*