# IMPACT-TED — Headache e-Diary

> Headache e-Diary (iPhone/iPad app by SurveyEngine GmbH.)

- Source: https://appshunter.io/ios/app/impact/id1563761140 (this page in markdown: same URL + `.md`)
- Developer: [SurveyEngine GmbH](https://appshunter.io/developer/1563761142)
- Category: Medical, Utilities
- Price: Free
- Age rating: 12+
- Requires: iOS 12.0 · 21 MB
- Languages: English
- Released: 2021-05-06
- Data updated: 2025-02-12
- User reviews in markdown: https://appshunter.io/ios/app/impact/id1563761140/reviews.md

## What is IMPACT?

Headache e-Diary for participants of a headache study.


## Version history (last 4 releases)

### 1.8.1 — 2022-08-04

Updated user ID handling.

### 1.6.2 — 2021-10-04

- userId handling update

### 1.4.13 — 2021-05-12

- improved userId handling
 - improved UI for small devices (iPhone 5 / SE)

### 1.4.10 — 2021-05-06

No release notes.

## Apps similar to IMPACT

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| --- | --- | --- | --- |
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| [BigMagnify](https://appshunter.io/ios/app/bigmagnify/id393247466) | 4.6 (2,293) | Free | Medical |
| [Watch ECG Pro - Deep Analysis](https://appshunter.io/ios/app/watch-ecg-pro/id1542744328) | 4.5 (55) | Free | Medical |
| [Inquisit 6](https://appshunter.io/ios/app/inquisit-6/id1454428461) | 2.5 (47) | Free | Medical |
| [Cranium: Headache Diary](https://appshunter.io/ios/app/cranium/id6443540431) | 4.6 (110) | Free | Medical |
| [Migraine Mentor](https://appshunter.io/ios/app/migraine-mentor/id1118593468) | 4.2 (5) | Free | Medical |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-02-12.*