Bestie ("the service") is an app that tells the people you connect with ("Besties") when your phone has not been used for a long time. The core features are free; Bestie Plus is an optional subscription with extra features. This policy explains what information the service uses and how it is stored.
| Information | Purpose | Where · how long |
|---|---|---|
| The name you choose (e.g. Mom) | Shown on your Besties' screens and alerts | Server, until you use “Delete my data” |
| Last activity time and kind (phone use · charger plugged/unplugged · “I'm OK” / “I'm back” · opening the app), last signal time, battery level and charging state, whether usage access is on, whether battery use is set to “Unrestricted”, your alert time setting, when we told your Besties you hadn't used your phone for 12 hours (that last activity time), (Plus) when we said your battery was down to 10% or seemed to have run out | Let Besties check that you're OK; when there's no activity for the time you set, ask you “Are you OK?” and tell your Besties if there's no answer; tell them once if you've been quiet for 12 hours (not at night); tell them if the battery is low or the phone seems off | Server. Overwritten with each update — no history. Until “Delete my data” |
| Phone usage events (times of unlocking and app screens) — also while the app is closed | Work out when a person last used the phone (incoming-call and alarm screens are ignored) | Read on the device only; just the resulting time is sent. App names and content are never sent |
| Anonymous account ID (random), push token, app language | Connecting Besties, sending check requests and alerts | Server, until “Delete my data” |
| List of connected Besties, 6-digit connection codes | Make sure only connected people can see each other | Server. Codes are deleted after 30 minutes; connections until you disconnect or delete your data |
| Emergency info: home address, emergency contacts (names and phone numbers you enter, e.g. a neighbor), note (optional) | So Besties can reach or contact someone in an emergency | Server. Hidden normally — shown to connected Besties only after an alert, an unanswered check, or 6+ hours without a signal. Until you delete it or use “Delete my data” |
| Start-of-day time — when you first use the phone after 4 a.m. | The weekly report; (Plus) morning check-ins, checking early when you're quieter than usual (routine alert), the calendar | The 21 days used for the routine alert stay on your device only. The server gets today's start time and the next check time — and, if “Weekly report” is on, each day's start time for 5 weeks (older days are deleted). You can turn these off in Settings |
| Alerts per day, the current alert, (Plus) family responses (the name of the Bestie who tapped “I'll check” or “Reached them”, and when) | The weekly report, and letting the family see who is handling an alert so it isn't repeated | Server. Alert counts for 5 weeks; responses until that alert ends (cleared when you're active again). Visible to your connected Besties |
| (Plus) Check-in plans — the name you give a plan (e.g. Walk), its time and days, and when you last tapped “I'm back” | Asking you at the planned time, telling your family if there's no answer, and letting them know you're back | Server, until you delete the plan or use “Delete my data”. Visible to your connected Besties |
| (Plus) Arrival check-ins — when you tapped “I've arrived” and the kind of place (home · hotel · destination) | Letting your family know you've arrived and showing it on Bestie cards | Server, only the latest one (overwritten next time), until “Delete my data”. Visible to your connected Besties (shown on cards for 12 hours) |
| (Plus) Family schedule — plan titles you or your family add (e.g. Trip to Jeju), dates, an optional note, and who added it | Letting the family know about days like trips or hospital visits, telling them about new plans, and showing that day's plans in an alert | Server, until the person who added it or the person it's for deletes it, or “Delete my data”. Visible to that person and their connected Besties |
| (Plus) Family album — photos you choose (resized on your device to 1600px on the long side, with location, device and other EXIF data removed before upload) and videos (one per post, up to 1 minute, re-encoded on your device to 720p without location or other metadata, uploaded with its first frame as a picture), the text you write, which Besties liked it, and comments (name, text and time) | Sharing photos and everyday moments with family; notifying family of new posts, likes and comments | Server (Cloud Firestore · Cloud Storage, Seoul region). Until the poster deletes it or uses “Delete my data” (comments can be deleted by their writer or the poster). Visible only to the poster and their connected Besties |
| Family album reports — who reported, the reported post's text and photo/video locations, and an optional reason | Reviewing and removing inappropriate content | Server. Deleted after review. Seen only by us |
| (Plus) Requests to join a family whose plan is full — who wants to join, the family's center, and their names | Asking the person who pays to add a seat, and connecting automatically once they do | Server. Deleted once connected or after 3 days. The joining person's name is sent to the payer in a notification |
| Your phone's time zone (offset from UTC) | Working out daytime alerts, check-in plans and start of day in your local time | Server, until “Delete my data” |
| (Plus) Purchase info: purchase token, subscription state and expiry, order ID, plan (number of people), who paid and whom it covers | Checking Plus eligibility, applying renewals and cancellations | Server. Payments are processed by Google Play; we never receive card details |
| Nicknames and phone numbers you save for Besties, in-app history, settings, (Plus) your Besties' status for the home screen widget | One-tap calls from alerts, showing history and the widget | Your device only; removed when you uninstall |
| Crash logs (error, device model, OS, app version) | Fixing app errors (Firebase Crashlytics) | As per Google's policies (90 days) |
The service uses Google Firebase (Anonymous Authentication, Cloud Firestore and Cloud Storage in Seoul, Cloud Functions, Cloud Messaging, Crashlytics, Hosting). We do not sell personal information or share it with third parties for other purposes.
If a parent installs Bestie on a child's phone to check on them, please install and connect it with the parent's consent. The service does not collect a child's location, messages or app content — only the information in section 1.
Privacy questions: dongseok3512@gmail.com