# PDF Field Guide vs Epoch Notes

The clearest difference is in-app purchases: Epoch Notes at none against PDF Field Guide's 2. Epoch Notes also leads on update cadence (every 3 days vs monthly). PDF Field Guide's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Field Guide sells 2 one-off in-app purchases. Epoch Notes asks for nothing beyond the download.

PDF Field Guide ships an update monthly, Epoch Notes every 3 days. The most recent releases landed on September 12, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PDF Field Guide | Epoch Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-field-guide/id6475620684/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Heidi Paul](https://appshunter.io/developer/1724530685) | [Luke Drushell](https://appshunter.io/developer/1565902401) |

## What reviewers say

### PDF Field Guide

[App page](https://appshunter.io/ios/app/pdf-field-guide/id6475620684)

Quickly access, search, and share your essential PDF documents. Organize and import files for offline viewing, and convert images into searchable PDFs. Smart zoom and full-screen reading enhance your experience.

**Highlights:** Organize and group documents, Import PDFs for offline viewing, Create searchable PDFs from images, Smart zoom and full-screen reading, Keyword search and table of contents, Share documents via multiple methods

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pass | $1.99 | one-time |
| Pro Pass | $4.99 | one-time |


### Epoch Notes

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Field Guide free?

PDF Field Guide is free to download, with in-app purchases available.

### Is Epoch Notes free?

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

### Do PDF Field Guide or Epoch Notes have ads?

Neither PDF Field Guide nor Epoch Notes shows ads.

### Which is updated more often, PDF Field Guide or Epoch Notes?

PDF Field Guide ships an update monthly, and Epoch Notes every 3 days. Most recently, PDF Field Guide was updated on September 12, 2026 and Epoch Notes on September 22, 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.*