# PDFShare vs HalfBrain

PDFShare and HalfBrain are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. PDFShare sells 2 in-app purchases, starting at $0.99 per 6 months and HalfBrain sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

PDFShare ships an update every 3 days, HalfBrain every 4 days. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PDFShare | HalfBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/halfbrain-ai-contact-manager/id6472225361/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | — | Freemium |
| Size | 3 MB | 9 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [勇 崔](https://appshunter.io/developer/1133151519) | [Resonant Ventures, LLC](https://appshunter.io/developer/972830286) |

## What reviewers say

### PDFShare

[App page](https://appshunter.io/ios/app/pdfshare/id6468026357)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual | $0.99 | per 6 months |
| Family | $1.99 | per 6 months |


### HalfBrain

[App page](https://appshunter.io/ios/app/halfbrain-ai-contact-manager/id6472225361)

This AI-powered app helps you remember details about your contacts and personalize interactions. It organizes voice notes into detailed profiles and generates conversation starters. Enjoy enhanced memory and stronger connections with a focus on user privacy.

**Highlights:** AI-generated conversation questions, Voice-to-text note taking, Detailed contact profiles, Offline access, iCloud sync, No account setup required

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscribe to Unlimited Monthly | $2.99 | per month |


## Frequently asked questions

### Is PDFShare free?

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

### Is HalfBrain free?

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

### Do PDFShare or HalfBrain have ads?

Neither PDFShare nor HalfBrain shows ads.

### Which is updated more often, PDFShare or HalfBrain?

PDFShare ships an update every 3 days, and HalfBrain every 4 days. Most recently, PDFShare was updated on October 18, 2026 and HalfBrain on October 11, 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.*