HushPrivacy Policy
Last updated: 8 November 2026
Hush: Migraine Tracker & Diary ("Hush") is an app from Itworked Systems, a company registered in Türkiye. A headache diary is health information, so the app was built to keep it on your phone. This page explains what the app does with information. The short answer: your diary and any Apple Health data never leave your phone, and the app sends only usage statistics and purchase records tied to a random install ID (not your name).
Itworked Systems is responsible for the app under Turkish data protection law (KVKK, Law No. 6698) and, for users in the EU and the UK, the GDPR.
- Your attacks, pain levels, symptoms, possible triggers, medication, notes, lists and settings are saved only on your phone. We cannot see them.
- On iPhone, if you turn on sleep from Apple Health (a Pro feature), the app reads your sleep on the phone to show it next to your attacks. It never stores that data and never sends it anywhere.
- The app sends install and app-open statistics (a random ID for each install and basic device details, never your name or anything from your diary) to Adapty, the service we use for analytics and for the optional Pro purchase.
- If you buy Pro, Apple or Google take the payment, and Adapty receives the purchase record so Pro can be unlocked and restored.
- No account, no sign-in, no ads, no tracking, no advertising ID. The diary works without an internet connection.
- We never sell your information.
What stays on your phone
- Your diary: each attack's start and end time, worst pain, where it hurt, symptoms, possible triggers, medication (name, dose, time and how much it helped), what else helped, and notes. Also the symptoms, triggers and medications you added, your settings and, if you enter it, the name to print on your report. These are saved in the app's own storage on your phone. Deleting the app deletes them, and we cannot recover them for you.
- Sleep from Apple Health (iPhone, optional, Pro). Only if you turn it on, the app asks Apple Health for permission to read Sleep. It then reads your sleep for the period on screen, works out how long you slept before each attack, and shows it. It reads sleep only, it never writes to Apple Health, and it does not keep a copy: the sleep data is held in memory while the screen is open and is not saved in the app, in backups, in iCloud or anywhere else. It is never sent to us, to Adapty or to anyone, and never used for advertising or marketing. You can turn it off in the app, and remove access in the iPhone's Settings, Health, Data Access & Devices. The Android app does not read health data from other apps.
- The diary lock (Pro). Face ID, Touch ID or your fingerprint is checked by your phone's system. The app only learns whether unlocking worked; it never sees your face or fingerprint data.
- Reports and backups. The doctor report (text or PDF) and the backup file are made on your phone. They leave it only when you share them, and then only to where you send them. When you import a backup, the app reads the file on the phone.
The app does not use your location, contacts, photos, camera, microphone or advertising identifier.
What leaves your phone, and why
| What | Why | Who receives it |
|---|---|---|
| If you buy Hush Pro: what you bought and when, and the store's receipt | To unlock Pro, restore it on a new phone, and count sales | Adapty, which checks purchases for us, and Apple or Google, which take the payment. We never see your card details |
| A random ID made for each install, the app's device ID for our apps (on iPhone, the identifier for vendor), basic device details (such as phone model, system version, language, time zone, store country and app version), whether this copy came from the app store or a test build (a simulator, a test version or a store's test device; on Android also the name of the app store or tool that installed it) and when the app is opened | To count installs and how often the app is used, so we can see whether it is useful and improve it (analytics) | Adapty (Adapty Tech Inc.), which processes it for us |
That is all. The app turns off Adapty's IP address collection and its advertising ID collection, does not ask to track you, and never sends Adapty anything from your diary or from Apple Health. The data is not linked to your name or any account (there is none). Your connection's IP address is necessarily seen by Adapty's servers to deliver the request, but the app tells Adapty not to store or use it. Read how Adapty handles this data at adapty.io/end-users-privacy.
Without an internet connection the diary works as usual and the statistics are simply not sent.
Why we may use this data
For purchases: to deliver what you bought. For statistics: our legitimate interest in understanding how many people use the app and keeping it working well. The statistics are minimal and carry no name, account or health information, and you can stop them at any time by deleting the app. We never receive health data: your diary and Apple Health sleep are processed only on your phone, by the app, for you.
How long it is kept
- On your phone: your diary stays until you delete attacks, use Delete all data in Settings, or delete the app.
- Purchase records are kept by Adapty for us so Pro can be checked and restored, and by Apple or Google under their own rules.
- Usage statistics are kept by Adapty for us for as long as we use its service for this app, and deleted on request where we can identify them.
Deleting your data
Everything in your diary is deleted when you use Settings, Delete all data, or delete the app. To ask us to delete the usage statistics and purchase records held for us by Adapty, email info@itworkedsystems.com with the subject "Hush data deletion". Because these records carry no name, please tell us roughly when you installed the app and which phone you use; we delete what we can match within 30 days. Purchase records that Apple or Google must keep stay with them under their own rules.
Where the data is processed
Adapty is based outside Türkiye and may process data in other countries, including the United States. These transfers follow the rules for sending data abroad in Turkish data protection law and, for users in the EU and the UK, the GDPR.
App stores and links
Apple and Google run the stores you download the app from, and may collect information about downloads and crashes under their own privacy policies, for example if you choose to share crash reports with developers in your phone's settings. The Settings screen links to this website; if you open those links, your browser visits itworkedsystems.com like any other website, and our host Cloudflare processes the request to deliver the page. We run no analytics on these pages.
Your rights
Under Turkish data protection law (KVKK, article 11) and the GDPR you can ask whether we process data about you, ask for access, correction or deletion, and object to its use. The only data we hold is the usage statistics and purchase records described above; because they carry no name or account, we may not be able to tell which record is yours, but we will help however we can. If you email us, we use your message only to answer it and delete it when it is no longer needed. Please don't send us your diary or health details: we don't need them to help. You can also complain to Türkiye's Personal Data Protection Authority (Kişisel Verileri Koruma Kurumu) or, if you live in the EU or the UK, to the data protection authority where you live.
Children
The app is not made for children under 13, and we do not knowingly process their data.
Changes
If the app ever starts using data in a new way, we will update this page and the date at the top before that version is released.