# Linde PRODOC vs Shlau

The clearest difference is in-app purchases: Linde PRODOC at none against Shlau's 4. Linde PRODOC also leads on iOS requirement (13.4 vs 15.1). Shlau's advantage is update cadence (every 10 days vs every 33 months). On price, ads and device support there is nothing between them.

Both are free to download. Shlau sells 4 in-app purchases, starting at $3.99 per month. Linde PRODOC asks for nothing beyond the download.

Linde PRODOC ships an update every 33 months, Shlau every 10 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Linde PRODOC | Shlau |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 10 days** |
| Size | 123 MB | 60 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LINDE GAZ ANONIM SIRKETI](https://appshunter.io/developer/1441755759) | [Emre Cakmak](https://appshunter.io/developer/6775973740) |

## What reviewers say

### Linde PRODOC

[App page](https://appshunter.io/ios/app/linde-prodoc/id1441755760)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shlau

[App page](https://appshunter.io/ios/app/shlau-save-it-later/id6775973738)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shlau Pro | $3.99 | per month |
| Shlau Premium | $9.99 | per month |
| Shlau Pro | $49.99 | per year |
| Shlau Premium | $99.99 | per year |


## Frequently asked questions

### Is Linde PRODOC free?

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

### Is Shlau free?

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

### Do Linde PRODOC or Shlau have ads?

Neither Linde PRODOC nor Shlau shows ads.

### Which is updated more often, Linde PRODOC or Shlau?

Linde PRODOC ships an update every 33 months, and Shlau every 10 days. Most recently, Linde PRODOC was updated on November 11, 2026 and Shlau on November 5, 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.*