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Dim vs N1-Headache

N1-Headache (by Curelator Inc.) and Dim are both migraine diaries for iPhone, built around different ideas. Here is how they compare, with a source for every N1-Headache detail.

Checked 26 October 2026

Side by side

	Dim	N1-Headache
Account	No account. Data stays on your device and in your private iCloud	Registration is part of setup; whether it is mandatory is not stated source
Apple Watch app	Yes: log and end attacks from the Watch	No Apple Watch app source
Logging without opening the app	Lock Screen widget, Live Activity and Apple Watch	Not stated
Automatic weather and pressure	Yes, with location permission: weather, pressure and pressure trend	Not stated
Apple Health	Reads sleep and headaches; writes headache entries	Not stated
Doctor report	Yes (Dim Pro): headache days, medication days against ICHD-3 overuse thresholds, MIDAS, calendar, attack list	Personal Analytical Report as a PDF for all users, including MIDAS and medication use source
CSV export	Yes (Dim Pro)	Not stated
Where your data is stored	On device, synced through your own private iCloud	On the developer's servers via third-party hosting source
Use of your data	Diary data is not sold or shared for research	Anonymized diary, medication and demographic data is provided to researchers source
Price	Free core diary; Dim Pro monthly or annual subscription (local price shown in the App Store)	Basic free; Premium is a one-time purchase (49.99) source
Languages	19 languages	English and German source
App Store rating	New: awaiting App Store review	4.4 ★ from 500 US ratings · last updated 2023-01-18 source

Where N1-Headache is stronger

Statistical trigger and protector maps built from a daily diary.
A PDF report with MIDAS and medication use is free for everyone.
Premium is a one-time purchase rather than a subscription.

Where Dim is different

Logging at the worst moment. One tap from the Apple Watch, a Lock Screen widget or the Live Activity; details can wait until the attack is over.
Context without typing. Weather, barometric pressure and its trend, and last night's sleep are captured for you when permissions allow.
The numbers neurologists ask for. Headache days per month, acute-medication days checked against ICHD-3 overuse thresholds and a MIDAS score, on two printable pages. See a sample report.
No account. Your diary lives on your device and in your own private iCloud.

Which should you choose?

Pick N1-Headache if you can fill in a daily questionnaire for months to get statistical trigger maps. Pick Dim if you want to log only when an attack happens, with context captured for you, plus Apple Watch, widgets and Apple Health. Note that N1-Headache's current iOS version dates from January 2023.

Questions

Is Dim better than N1-Headache?

It depends on what you need. Pick N1-Headache if you can fill in a daily questionnaire for months to get statistical trigger maps. Pick Dim if you want to log only when an attack happens, with context captured for you, plus Apple Watch, widgets and Apple Health. Note that N1-Headache's current iOS version dates from January 2023.

Does N1-Headache need an account?

Registration is part of setup; whether it is mandatory is not stated. Dim works without an account.

Does N1-Headache have an Apple Watch app?

No Apple Watch app. Dim has an Apple Watch app for logging and ending attacks.

See what Dim gives your neurologist

Three months of attacks on two pages: headache days, medication days against overuse thresholds, MIDAS and the full attack list.

See a sample report

No account · No ads · Nothing sold

Competitor details were checked on 26 October 2026 against each app's US App Store listing and the developer's own website and privacy policy; each row links to its source. "Not stated" means we found no primary source, not that the feature is missing. Apps change often, so check the App Store before you decide. Trademarks belong to their owners; Dim is not affiliated with any app listed. Spotted something out of date? Email support@arvetechapps.com.