# Walter eLibrary vs OSG Pro Catalog

The clearest difference is review sentiment: Walter eLibrary at 100% against OSG Pro Catalog's 56%. Walter eLibrary also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Walter eLibrary ships an update every 11 months, OSG Pro Catalog every 7 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Walter eLibrary | OSG Pro Catalog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/walter-elibrary/id515262824/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | **100.0% of reviews** | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 7 months** |
| Monetization | **Free** | Ad-supported |
| Size | 45 MB | 12 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Walter-AG](https://appshunter.io/developer/423564215) | [OSG CORPORATION](https://appshunter.io/developer/556781862) |

## What reviewers say

### Walter eLibrary

[App page](https://appshunter.io/ios/app/walter-elibrary/id515262824)

Access a vast digital catalog of industrial tools and print media from a leading global brand. Browse, search, and organize product information offline, and easily transfer selections to an online shop. Available in 17 languages for convenient access anytime, anywhere.

**Highlights:** Digital catalog access, Global search functionality, Offline browsing, Bookmark and organize content, Shopping cart transfer, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


### OSG Pro Catalog

[App page](https://appshunter.io/ios/app/osg-pro-catalog/id556781859)

Access a comprehensive catalog of industrial cutting tools from a leading manufacturer. Browse drilling, threading, and milling tools, along with technical data and brochures. The app automatically adjusts its language to your device's settings.

**Highlights:** Drilling and Threading Tools Catalog, Milling Tools Catalog, Brochures and Technical Data, Automatic Language Setting, Search Functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Walter eLibrary free?

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

### Is OSG Pro Catalog free?

OSG Pro Catalog is free to download, with no in-app purchases.

### Do Walter eLibrary or OSG Pro Catalog have ads?

OSG Pro Catalog shows ads; Walter eLibrary does not.

### Which is updated more often, Walter eLibrary or OSG Pro Catalog?

Walter eLibrary ships an update every 11 months, and OSG Pro Catalog every 7 months. Most recently, Walter eLibrary was updated on November 1, 2026 and OSG Pro Catalog on November 1, 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.*