# Valdi Catalyst Market vs TRANS.bg

The clearest difference is in-app purchases: TRANS.bg at none against Valdi Catalyst Market's 3. TRANS.bg also leads on update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Valdi Catalyst Market sells 3 in-app purchases, starting at $39.99 per month. TRANS.bg asks for nothing beyond the download.

Valdi Catalyst Market ships an update every 2 months, TRANS.bg every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Valdi Catalyst Market | TRANS.bg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 4 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Waldemar Konarski](https://appshunter.io/developer/1718085438) | [JOBS.bg](https://appshunter.io/developer/1018834284) |

## What reviewers say

### Valdi Catalyst Market

[App page](https://appshunter.io/ios/app/valdi-catalyst-market/id6472909573)

This app provides quick and accurate valuations for used catalytic converters based on their precious metal content. It utilizes a comprehensive database compiled since 2008, updated thrice daily with market prices for palladium, rhodium, and platinum.

**Highlights:** Catalytic converter valuation, Precious metal price tracking (Pd, Rh, Pt), Database updated 3x daily, Catalog of 20,000 items, Safe buying and selling tool

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold - Monthly | $39.99 | per month |
| Platinum - Monthly | $59.99 | per month |
| 20 Search Credits | $11.99 | one-time |


### TRANS.bg

[App page](https://appshunter.io/ios/app/transbg/id6784132311)

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

**In-app purchases:** none


## Frequently asked questions

### Is Valdi Catalyst Market free?

Valdi Catalyst Market is free to download, with in-app purchases available.

### Is TRANS.bg free?

TRANS.bg is free to download, with no in-app purchases.

### Do Valdi Catalyst Market or TRANS.bg have ads?

Neither Valdi Catalyst Market nor TRANS.bg shows ads.

### Which is updated more often, Valdi Catalyst Market or TRANS.bg?

Valdi Catalyst Market ships an update every 2 months, and TRANS.bg every 3 weeks. Most recently, Valdi Catalyst Market was updated on November 4, 2026 and TRANS.bg on October 31, 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.*