# Mouser vs Catalopedia

The clearest difference is rating: Mouser at 2.4 against Catalopedia's 1.0. Mouser also leads on in-app purchases (none vs 5) and review sentiment (18% vs 0%). Catalopedia's advantage is update cadence (every 3 weeks vs every 6 weeks) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Catalopedia sells 5 one-off in-app purchases. Mouser asks for nothing beyond the download.

Mouser holds the better App Store score, 2.4 against 1.0. That said, the two scores are not equally well evidenced: Mouser has 34 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 18% of Mouser's written reviews are positive against 0% of Catalopedia's.

Mouser ships an update every 6 weeks, Catalopedia every 3 weeks. The most recent releases landed on September 18, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Mouser | Catalopedia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (34 ratings)](https://appshunter.io/ios/app/mouser/id465777531/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/catalopedia/id1662071607/reviews) |
| Number of ratings | **34** | 2 |
| Positive reviews | **17.9% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 97 MB | 61 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mouser Electronics](https://appshunter.io/developer/465777534) | [Skrya Pte Ltd](https://appshunter.io/developer/1607060618) |

## What reviewers say

### Mouser

[App page](https://appshunter.io/ios/app/mouser/id465777531)

Easily find and browse the latest semiconductors and electronic components for your designs. Search by category, date, or manufacturer, and view real-time stock availability. Build shopping baskets, manage projects, and access your account for order history and status.

**Highlights:** Browse new products by date, category, manufacturer, Search and filter electronic components, View real-time stock availability and pricing, Build shopping baskets and manage projects, Access My Mouser account for order history, Barcode scanner for quick product lookup, Bookmark products for quick access

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

**In-app purchases:** none


### Catalopedia

[App page](https://appshunter.io/ios/app/catalopedia/id1662071607)

This app serves as a comprehensive encyclopedia for catalytic converters, offering free, unlimited searches. It provides transparent pricing, accurate metal and FX updates, and detailed 3D rendered images with exact measurements. The app also features an AI-powered identification tool and welcomes collaboration for expanding its product catalog.

**Highlights:** Unlimited free catalytic converter searches, Transparent pricing with customizable rates, Hourly updated metal and FX prices, 3D rendered images with exact measurements, AI-powered converter identification (Beta), Country-specific product differentiation, Collaborative expansion of product catalog

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Credits | $29.99 | one-time |
| 66 Credits | $59.99 | one-time |
| 144 Credits | $99.99 | one-time |
| 225 Credits | $179.99 | one-time |
| 360 Credits | $229.99 | one-time |


## Frequently asked questions

### Is Mouser free?

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

### Is Catalopedia free?

Catalopedia is free to download, with in-app purchases available.

### Which has better reviews, Mouser or Catalopedia?

Mouser is rated higher. Mouser averages 2.4 out of 5 from 34 ratings, while Catalopedia averages 1.0 from 2 ratings.

### Do Mouser or Catalopedia have ads?

Neither Mouser nor Catalopedia shows ads.

### Which is updated more often, Mouser or Catalopedia?

Mouser ships an update every 6 weeks, and Catalopedia every 3 weeks. Most recently, Mouser was updated on September 18, 2026 and Catalopedia on June 2, 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.*