# Back to This vs ScanOnce

The clearest difference is update cadence: ScanOnce at every 5 days against Back to This's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Back to This sells 1 in-app purchase, starting at $4.99 per month and ScanOnce sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Back to This ships an update every 3 weeks, ScanOnce every 5 days. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Back to This | ScanOnce |
| --- | --- | --- |
| 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 4 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Quanite FZE](https://appshunter.io/developer/1845665838) | [Andrii Zakharov](https://appshunter.io/developer/6779217338) |

## What reviewers say

### Back to This

[App page](https://appshunter.io/ios/app/back-to-this/id6772779325)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Back to This Pro | $4.99 | per month |


### 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ScanOnce Pro Monthly | $3.99 | per month |
| ScanOnce Pro Yearly | $19.99 | per year |
| ScanOnce Pro | $49.99 | one-time |


## Frequently asked questions

### Is Back to This free?

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

### Is ScanOnce free?

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

### Do Back to This or ScanOnce have ads?

Neither Back to This nor ScanOnce shows ads.

### Which is updated more often, Back to This or ScanOnce?

Back to This ships an update every 3 weeks, and ScanOnce every 5 days. Most recently, Back to This was updated on October 12, 2026 and ScanOnce on October 24, 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.*