# Spaced Recall vs PDF Tools Pro

The clearest difference is in-app purchases: PDF Tools Pro at none against Spaced Recall's 4. PDF Tools Pro also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Spaced Recall sells 4 in-app purchases, starting at $3.00 per month. PDF Tools Pro asks for nothing beyond the download.

## The numbers

| Metric | Spaced Recall | PDF Tools Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 24 MB | 48 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STEVEN DENCHEV](https://appshunter.io/developer/1887278410) | [Murodjon Sattorov](https://appshunter.io/developer/1803151222) |

## What reviewers say

### Spaced Recall

[App page](https://appshunter.io/ios/app/spaced-recall/id6761011354)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rainbow tip | $3.00 | per month |
| Bronze tip | $1.00 | one-time |
| Silver tip | $2.00 | one-time |
| Gold tip | $5.00 | one-time |


### PDF Tools Pro

[App page](https://appshunter.io/ios/app/pdf-tools-pro-scanner/id6763733094)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spaced Recall free?

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

### Is PDF Tools Pro free?

PDF Tools Pro is free to download, with no in-app purchases.

### Do Spaced Recall or PDF Tools Pro have ads?

Neither Spaced Recall nor PDF Tools Pro shows ads.

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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.*