Effective Date: October 2026 · CompSched, a subsidiary of AeroSynapse Software LLC
Overview
LineCheck is a schedule app for airline crew members. LineCheck is published by CompSched, a subsidiary of AeroSynapse Software LLC ("we", "us"). This policy explains what the app collects, where it goes and how long we keep it. We do not sell your data, show ads, or share your data with anyone for advertising.
Data Stored on Your Device
Your schedule — trips, duties, flight legs, crew lists, hotel and transport details — is downloaded from your airline's crew scheduling portal and stored on your phone so it works offline. The portal only provides about three months at a time, so LineCheck keeps every month you have synced; that history is part of your phone's own backup (Google or iCloud) if you have one turned on.
If you turn on Check pay in Rainmaker, LineCheck reads your pay records from your airline's Rainmaker crew pay site, signed in with your own airline credentials, to compare them with the contract. Those pay records stay on your phone and are never sent to us.
Your airline password, and your CompFlightLog password if you turn that feature on, are stored encrypted in your phone's secure storage (iOS Keychain / Android EncryptedSharedPreferences). Your airline password is sent only to your airline's own sign-in servers, never to ours.
If you use Calendar Export, LineCheck writes your trips to the calendar you choose on your phone. Those events then sync wherever that calendar syncs (for example, Google Calendar or iCloud).
Data Sent to Our Servers
The app talks to a server we run at compsched.com for these purposes:
- License and trial — a random device ID generated by the app, used to track your trial and license.
- Pilot identity — your name, employee number, base and airline username (never your password), so we can match a device to a pilot when you ask for support.
- Usage information — app opens and which features are used, with app version, device model and OS version. We use this to see what is working and what to improve.
- Error reports — the error message, where it happened and app version, to find and fix bugs.
- Schedule snapshots — after a sync, a copy of the raw schedule data from your airline's portal, with the month and number of trips. We use this only to diagnose and fix schedule-reading problems.
- LineCheck backup (optional, off until you turn it on) — after each sync, your full schedule history as the app has saved it: trips, duties, flight legs, crew lists, hotels and transport. It is stored encrypted, linked to your license key, so a new phone can restore it after you enter your key. Only the phone that currently holds your license can download or replace it. We do not look at backups except to fix a problem you ask us about. You can delete it at any time in the app (Settings → Backup → Delete my backup).
None of this is shared with anyone else.
Other Services the App Uses
LineCheck has no advertising SDKs and no third-party analytics or tracking. It does connect to these services to do its job:
- Your airline's crew scheduling and crew hotel portals — to sync your schedule and hotel reservations (including Around Me), signed in with your own credentials.
- Your airline's Rainmaker crew pay site (optional) — if you turn on Check pay in Rainmaker, to read your own pay records; see above.
- CompFlightLog (compflightlog.com, optional) — if you turn on flight logging, the flights you log, with their times, aircraft and crew, are sent to your CompFlightLog account.
- adsb.lol — when you tap a flight number, the aircraft's tail number is looked up to show where your inbound airplane is.
- aviationweather.gov — airport codes are sent to get METAR and TAF weather.
- Stripe — if you buy a license, payment is handled by Stripe. We never see or store your card details; we receive only confirmation that the payment went through.
Data Retention
- App-open and feature-usage records: deleted after 90 days.
- Schedule snapshots: deleted after 90 days.
- LineCheck backup: kept while backup is on and replaced after each sync. Deleted when you tap Delete my backup, when you ask us, or one year after your license ends.
- Error reports: deleted after 180 days.
- Device, identity and license records: kept while your trial or license is in use, or until you ask us to delete them.
Your Rights
You may request deletion of your device record and any associated data by contacting us at the address below. We will delete your device, identity, license, usage, error and snapshot records, and any LineCheck backup, from our servers. Data on your phone is removed when you uninstall the app; flights you logged to CompFlightLog stay in that account until you delete them there.