# Sign PDF Documents vs BrainFog

The clearest difference is monetization model: Sign PDF Documents at free against BrainFog's free with in-app purchases. Sign PDF Documents also leads on ratings volume (10 vs 2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Sign PDF Documents sells 2 in-app purchases, starting at $6.99 per 7 days and BrainFog sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Sign PDF Documents against 5.0 for BrainFog. That said, the two scores are not equally well evidenced: Sign PDF Documents has 10 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | Sign PDF Documents | BrainFog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (10 ratings)](https://appshunter.io/ios/app/sign-pdf-documents-easysigner/id6753874595/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brainfog-voice-memory/id6777730766/reviews)** |
| Number of ratings | **10** | 2 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 73 MB | 45 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [OneRack](https://appshunter.io/developer/1792950973) | [WAQAR NASIM](https://appshunter.io/developer/6777730768) |

## What reviewers say

### Sign PDF Documents

[App page](https://appshunter.io/ios/app/sign-pdf-documents-easysigner/id6753874595)

Easily add your signature to PDF and image files without printing or scanning. Fill out forms, add text, and make edits with speed and precision. Manage multiple signatures and access all your signed documents securely.

**Highlights:** Add signatures to PDFs and images, Fill out forms with text fields, Create and manage multiple signatures, Automatically saves progress, Edit PDFs and images, Securely store signed files

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly Access | $6.99 | per 7 days |
| Pro Yearly Access | $29.99 | per year |


### BrainFog

[App page](https://appshunter.io/ios/app/brainfog-voice-memory/id6777730766)

This app acts as a private voice-based memory aid, allowing you to speak details and later ask for them in your own words. It handles reminders, passwords, notes, and personal records without requiring typing or folders. Your data is stored locally for enhanced privacy.

**Highlights:** Voice-to-text memory saving, Natural language querying, Offline reminders, Local data storage, Multi-language support, Data export/import

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $14.99 | per month |
| Yearly | $139.99 | per year |


## Frequently asked questions

### Is Sign PDF Documents free?

Sign PDF Documents is free to download, with in-app purchases available.

### Is BrainFog free?

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

### Which has better reviews, Sign PDF Documents or BrainFog?

BrainFog is rated higher. Sign PDF Documents averages 4.9 out of 5 from 10 ratings, while BrainFog averages 5.0 from 2 ratings.

### Do Sign PDF Documents or BrainFog have ads?

Neither Sign PDF Documents nor BrainFog 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.*