# EACS vs Headnotes

The clearest difference is update cadence: Headnotes at every 5 days against EACS's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EACS ships an update every 4 months, Headnotes every 5 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | EACS | Headnotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 44 MB | 11 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Antimicrobial Therapy, Inc.](https://appshunter.io/developer/443442554) | [Pal Hidy](https://appshunter.io/developer/6802222767) |

## What reviewers say

### EACS

[App page](https://appshunter.io/ios/app/eacs/id1044471845)

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

**In-app purchases:** none


### Headnotes

[App page](https://appshunter.io/ios/app/headnotes-headache-diary/id6802222765)

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

**In-app purchases:** none


## Frequently asked questions

### Is EACS free?

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

### Is Headnotes free?

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

### Do EACS or Headnotes have ads?

Neither EACS nor Headnotes shows ads.

### Which is updated more often, EACS or Headnotes?

EACS ships an update every 4 months, and Headnotes every 5 days. Most recently, EACS was updated on October 9, 2026 and Headnotes on October 9, 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.*