# Epoch Notes vs AI PDF Reader

The clearest difference is in-app purchases: Epoch Notes at none against AI PDF Reader's 4. Epoch Notes also leads on update cadence (every 3 days vs every 2 weeks). AI PDF Reader's advantage is device support (4 vs 1) and iOS requirement (14.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. AI PDF Reader sells 4 in-app purchases, starting at $0.99 per month. Epoch Notes asks for nothing beyond the download.

Epoch Notes ships an update every 3 days, AI PDF Reader every 2 weeks. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Epoch Notes | AI PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 8 MB | 226 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Luke Drushell](https://appshunter.io/developer/1565902401) | [Software Tailor (HK) Limited](https://appshunter.io/developer/6776648111) |

## What reviewers say

### Epoch Notes

[App page](https://appshunter.io/ios/app/epoch-notes/id6760949693)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI PDF Reader

[App page](https://appshunter.io/ios/app/ai-pdf-reader-on-device/id6779994987)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Personal - Monthly | $0.99 | per month |
| Pro Business - Monthly | $4.99 | per month |
| Pro Personal - Yearly | $9.99 | per year |
| Pro Business - Yearly | $49.99 | per year |


## Frequently asked questions

### Is Epoch Notes free?

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

### Is AI PDF Reader free?

AI PDF Reader is free to download, with in-app purchases available.

### Do Epoch Notes or AI PDF Reader have ads?

Neither Epoch Notes nor AI PDF Reader shows ads.

### Which is updated more often, Epoch Notes or AI PDF Reader?

Epoch Notes ships an update every 3 days, and AI PDF Reader every 2 weeks. Most recently, Epoch Notes was updated on September 22, 2026 and AI PDF Reader on September 10, 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.*