# ScanOnce vs Structured Flow

The clearest difference is iOS requirement: Structured Flow at 15.0 against ScanOnce's 17.0. 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.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | ScanOnce | Structured Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scanonce-pdf-doc-scanner/id6780030918/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 56 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andrii Zakharov](https://appshunter.io/developer/6779217338) | [Jorge Alves](https://appshunter.io/developer/1838093137) |

## What reviewers say

### ScanOnce

[App page](https://appshunter.io/ios/app/scanonce-pdf-doc-scanner/id6780030918)

This app scans documents directly on your device without using the cloud or requiring an account. It offers automatic edge detection, page straightening, and text recognition for easy searching. Export scans as PDFs or JPEGs, and secure your documents with Face ID.

**Highlights:** Automatic edge detection and page straightening, On-device text recognition for search, Export as PDF or JPEG, Multi-page document capture, Document organization with folders, Face ID security

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

**In-app purchases:** none


### Structured Flow

[App page](https://appshunter.io/ios/app/structured-flow/id6789644116)

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

**In-app purchases:** none


## Frequently asked questions

### Is ScanOnce free?

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

### Is Structured Flow free?

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

### Do ScanOnce or Structured Flow have ads?

Neither ScanOnce nor Structured Flow shows ads.

### Which is updated more often, ScanOnce or Structured Flow?

ScanOnce ships an update every 5 days, and Structured Flow every 5 days. Most recently, ScanOnce was updated on September 9, 2026 and Structured Flow on September 13, 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.*