# ZenZettel vs DocuLens

The clearest difference is in-app purchases: DocuLens at none against ZenZettel's 2. DocuLens also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. ZenZettel sells 2 in-app purchases, starting at $0.99 per month. DocuLens asks for nothing beyond the download.

ZenZettel ships an update every 2 months, DocuLens every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ZenZettel | DocuLens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zenzettel/id6744944376/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 41 MB | 111 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ising Digital Sarl](https://appshunter.io/developer/1685735618) | [Nishaben Sudani](https://appshunter.io/developer/1872888740) |

## What reviewers say

### ZenZettel

[App page](https://appshunter.io/ios/app/zenzettel/id6744944376)

This app helps you build knowledge by transforming fleeting thoughts into permanent insights. It features a minimalist interface inspired by Japanese aesthetics, secure local storage, and AI-powered idea development. Organize your thoughts with smart tagging and advanced filtering.

**Highlights:** Impermanent note capture, AI-powered idea transformation, Advanced filtering, Minimalist interface, Secure local storage, Markdown export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |
| Premium | $9.99 | per year |


### DocuLens

[App page](https://appshunter.io/ios/app/doculens-smart-pdf-scanner/id6759091991)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZenZettel free?

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

### Is DocuLens free?

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

### Do ZenZettel or DocuLens have ads?

Neither ZenZettel nor DocuLens shows ads.

### Which is updated more often, ZenZettel or DocuLens?

ZenZettel ships an update every 2 months, and DocuLens every 3 weeks. Most recently, ZenZettel was updated on October 24, 2026 and DocuLens on October 28, 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.*