# PaperScan vs Sieslack

The clearest difference is iOS requirement: Sieslack at 11.0 against PaperScan's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

PaperScan ships an update every 4 months, Sieslack every 8 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PaperScan | Sieslack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (747 ratings)](https://appshunter.io/ios/app/paperscan/id670210933/reviews)** | — |
| Number of ratings | **747** | — |
| Positive reviews | 70.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | Free | — |
| Size | 23 MB | 58 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DocuWare GmbH](https://appshunter.io/developer/411884967) | [Wolters Kluwer Tax & Accounting Deutschland GmbH](https://appshunter.io/developer/439837413) |

## What reviewers say

### PaperScan

[App page](https://appshunter.io/ios/app/paperscan/id670210933)

Easily digitize various paper documents like invoices, receipts, and recipes. Automatically crop, straighten, and enhance scans for outstanding quality. Upload to cloud storage or share via email and print.

**Highlights:** Automatic document recognition and capture, Automatic cropping and straightening, Scans various document types, High scan quality in any lighting, Creates PDF files, Batch upload to cloud storage, Share via email, print, and AirDrop

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 📄 Automatic edge detection and document alignment
- 🚀 Fast scanning and processing
- 💾 Multiple export options (PDF, email, Dropbox, DocuWare)
- ✨ High-quality document capture

**What reviewers complain about**

- 🐛 Inconsistent edge detection accuracy
- ⚠️ Forced flash usage in good lighting
- 🖼️ Automatic brightness adjustment issues
- 🎨 Unattractive UI/skin design
- ⏱️ Slow autoscan feature

**Reported bugs**

- Image disappears after scanning instead of displaying
- App freezes and requires multiple restarts to show scans
- Edge detection fails 50% of the time
- DocuWare integration not transferring documents properly
- Autoscan unreliable and inconsistent

**Requested features**

- Direct save to Photos app instead of Files only
- Improved edge detection algorithm
- Better autoscan reliability and speed
- Manual brightness control options
- UI/design improvements


### Sieslack

[App page](https://appshunter.io/ios/app/sieslack-app/id929034602)

**In-app purchases:** none


## Frequently asked questions

### Is PaperScan free?

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

### Is Sieslack free?

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

### Do PaperScan or Sieslack have ads?

Neither PaperScan nor Sieslack shows ads.

### Which is updated more often, PaperScan or Sieslack?

PaperScan ships an update every 4 months, and Sieslack every 8 months. Most recently, PaperScan was updated on October 12, 2026 and Sieslack on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*