JDK vs Migrelle
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
JDK
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Nasce nel settembre 1980 il Jissen Dojo Karate, sulle ceneri del karate Club Abbiategrasso, e da subito si segnala come una ventata di novità nel nel mondo delle arti marziali lombarde, guidato dall'allora l'istruttore Giorgio Rainoldi giovanissimo karateka milanese. Dopo qualche anno di assestamento, 1985 si iscrive alla Federazione che il CONI ha fortemente voluto per dare una casa ad uno sport ancora troppo frammentato in piccole organizzazioni, ed associava il Karate al Judo ed alla Lotta. Iniziava così un percorso formativo federale che ha fortemente caratterizzato la formazione tecnica e culturale del Maestro Giorgio Rainoldi: l'Università , poi i corsi multimediali del CONI e la specializzazione presso la Scuola dello Sport dell'Acquacetosa a Roma. Una formazione permanente e continua culminata nel 2013 con l'acquisizione della qualifica di Allenatore di 4° livello Europeo. In mezzo a tutto la qualifica di formatore dei quadri tecnici federali, responsabile dei rapporti con la scuola e l'università , per sette anni all'Università Cattolica del Sacro Cta di Milano ha tenuto il corso SIS corso specializzazione di post laurea; dal 2015 allenatore della Nazionale Italiana Giovanile, ed anche da questa avventura che continua tuttora sono arrivate soddisfazioni importanti, con la conquista di titoli continentali e mondiali.
Migrelle
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Migrelle is a private migraine and headache tracker, quick enough to use mid-attack, that helps you see your patterns β and walk into your next appointment with real data. LOG IN TWO TAPS Tap Log, then Save β an attack is recorded in seconds, even mid-migraine. Add pain, aura, symptoms, medication and triggers later β no rush. ONE QUESTION A DAY Daily Pulse asks once a day whether it was a migraine day. One tap tells symptom-free days apart from days with no entry at all β the difference your doctor's report rests on. Evening reminder, home-screen widget, and a way to fill in the days you missed. AFTER ACUTE MEDICATION Log what you took during an attack and Migrelle comes back with two short questions, after about 2 hours and the next day: what happened to the pain, and how well you could function. Answers are grouped per medication in your report β a record of what you observed, never a verdict on the medication. YOUR TRIGGER TAGS Tag what was going on with an attack β stress, poor sleep, screens, weather, your cycle and more. Migrelle shows which tags come up most often with your attacks, when attacks tend to happen and the barometric pressure beforehand. Patterns in your own log, not proof of a cause. A REPORT YOUR DOCTOR WILL ACTUALLY READ Generate a clean PDF β migraine days, average severity, medication days (with a medication-overuse headache warning), symptom-free days and your top triggers. Everything computed on your device. Premium adds the full dossier: month by month, a calendar for every month, and every attack with the medication you took and the answer 2 hours later. PRIVATE BY DESIGN End-to-end encrypted and local-first. Your health data lives on your phone. An optional encrypted backup is protected by a recovery code only you hold β we can't read your data. No ads, no data selling, ever. Migrelle is a tracking and information tool, not a medical device β it does not diagnose or treat. Always talk to a healthcare professional about your symptoms. Free to track, and the summary report stays free. Migrelle Premium adds the full doctor dossier, what you tag most with attacks, your week's day pattern, weather and pressure, encrypted backup, and your response patterns across treatment attempts β patterns from your own logs, not a prediction. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: JDK at none against Migrelle's 3. Migrelle's advantage is ads (none vs shown) and update cadence (every 4 days vs every 13 months). On price, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Migrelle sells 3 in-app purchases, starting at $5.79 per month. JDK asks for nothing beyond the download.
JDK ships an update every 13 months, Migrelle every 4 days. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.
| Parameter | JDK | Migrelle |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 13 months | Every 4 days β better |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details β not scored | ||
| Size | 59 MB | 51 MB |
| Age rating | 17+ | 4+ |
| Developer | OVERCLOUDS SRL | Norbert Banaszek |
In-app purchases
JDK
No in-app purchases
Migrelle
- Migrelle Pro Monthly$5.791 Month
- Migrelle Pro Yearly7 Days trial$33.491 Year
- Migrelle Pro Lifetime$99.90









