Free Migraine Tracker App: How to Tell Which Free You Get

Free covers three different arrangements in this category, and the App Store page tells you which one you are looking at before you install anything. It takes about thirty seconds, and it is worth doing on the app you are about to trust with a two-year record of a neurological condition.

The three shapes:

Free to log, paid to understand. Recording attacks costs nothing and always will. The monthly counts, the correlations and the printable report sit behind a subscription. This is the most common arrangement in migraine apps and it is a reasonable trade, because the counting is the part that took the work.

Free trial, then a wall. Everything works for a week or two, then logging itself stops until you pay. The distinguishing feature is that the paywall lands on the entry screen rather than the analysis screen.

Free because you are not the customer. No subscription, or a token one, and the app’s declared data uses include the developer’s advertising or marketing.

None of the three is dishonest. They are different bargains, and the reason to know which you have taken is that the cost of discovering it late is high in this category specifically.

Why late discovery costs more here than elsewhere

A migraine diary is only worth what its continuity is worth.

Every threshold in headache medicine is counted in days per month — whether a pattern meets a definition, whether a preventive did anything, whether acute medication use has crossed a line. All of those are rates, and a rate needs an unbroken run of months underneath it.

So the month you hit a paywall and stopped logging is not a month of slightly worse data. It is a hole in the denominator. And since no migraine app imports another one’s history, the fix — moving to something else — starts a fresh record at zero rather than continuing the one you have.

That is the whole argument for spending thirty seconds before rather than fourteen months after.

The check

Two panels on the App Store listing, both published by Apple rather than written by the developer.

In-App Purchases. On a phone it sits just under the developer’s name; on the web it is in the information table lower down. Every purchase the developer sells appears there with a price. A free app with a subscription cannot conceal it.

Read it as a range, not a price tag. Apps accumulate entries — old tiers, promotional variants, regional experiments — so a listing showing several annual plans at different figures is normal and does not mean you will be charged the highest one. What the list does tell you reliably is whether a subscription exists at all, and roughly what scale of money is involved. A tracker with one purchase entry at thirty dollars a year and a tracker with eight entries topping ninety are different propositions.

App Privacy. Further down, in Apple’s own categories, which is what makes it comparable across apps: developers must declare what they collect, and every listing is described in the same vocabulary.

Read past the category names to the line stating what the data is used for. App functionality and analytics are ordinary. Developer’s advertising or marketing is the one that answers the third question above, and it is a declaration the developer makes, not an accusation anyone else is levelling.

Then look for one specific thing: whether health data is declared as linked to your identity. Not linked means it is not tied to an account or an identifier that names you. Linked means it is. On a headache diary that distinction is the substance of the whole privacy question, and it is one line of a table.

Running it on my own app

I build one of these, which is exactly why the check above is a method rather than a verdict — I would rather hand you the tool than the conclusion.

Applied to Migraine Journal: the In-App Purchases list shows three entries, a monthly, an annual and a one-time lifetime purchase. Logging is free permanently, along with your full entry history, the daily reminder and basic thirty-day stats. What the subscription buys is the analysis — the weather-risk forecast, monthly summaries, trigger and medication patterns, the doctor-ready PDF, and all-time trends. So: shape one, and I would rather you know that from the App Store page than from me saying so here.

Do the same to whichever three apps you are weighing. It is the rare comparison you do not have to take anyone’s word for, including mine.

What ought to be free, whoever makes it

Three things, and I would treat a missing one as disqualifying rather than as a negotiating position.

Logging. All of it, forever, including the days with no attack. Clear days are not filler — they are the denominator that turns a pile of bad days into a rate, and an app that meters entries is metering the thing that makes the record work.

Your whole history. Not the last thirty days with the rest behind a wall. A record you cannot read is not a record you own.

Getting the data out. In a form that survives the app: rows with dates, not a rendered picture of a chart. This is the one people check last and need most, usually at the moment they have decided to leave.

Analysis is a different matter. Counting days properly, correlating them against pressure and sleep, and producing something a neurologist can read in ninety seconds is real work, and paying for it is a normal transaction. What makes an app worth choosing over paper at all goes through where that line sensibly falls.

The genuinely free option

Paper, and it beats every app on this page for the first three months.

Nothing to learn, no screen to wake, no subscription to forget about, and during a bad week the friction of a pen is lower than the friction of a phone. The free printable migraine diary is a monthly grid built backwards from the four figures a clinician asks for, so filling it in produces them without any counting on your part. No email, no signup, and it works on Android by the simple mechanism of being a piece of paper.

It falls down in exactly two places. Adding up days across three sheets by hand, which is tedious and error-prone. And barometric pressure, which is the one field a paper sheet cannot fill in honestly — the research on pressure and attacks is mixed for interesting reasons, but the recording problem is not mixed at all. Weather written down the next day from what you remember of the sky measures your beliefs about the weather.

If neither of those two limits bites, print the sheet and skip the App Store entirely. That is a real answer to this search, and it is the cheapest one on the page.