Privacy Policy

Remain.corp (SourcingTree, “we”) respects the privacy of everyone who uses our mobile applications (the “Service”). This policy explains what we collect, why we collect it, how long we keep it, and how you can control it.

0. Who we are and which apps this covers

ItemDetail
Developer (legal entity)Remain.corp
Google Play developer nameRemain.corp
Contact emailsourcingtree.cs@gmail.com

This policy applies to the following applications.

App namePackage name
Car Connector (카 커넥터)com.remain.carconnector
HOPPY HIGHcom.remain.hoppyhigh
SafeHub (세이프허브)com.remain.facility_aos

1. What we collect and why

There is no sign-up. We never ask for your name, phone number, or address. We process only the minimum needed to run the Service.

DataPurposeRetention
Device identifier
(a one-way hash of the Android ID)
Managing the free trial and preventing repeated trials Until you request deletion
Service account
(an anonymous account derived from the identifier above)
Keeping your trial period consistent across reinstalls Until you request deletion
Crash data
(device model, OS version, app version, time and details of the error)
Diagnosing crashes and improving quality 90 days from collection
Usage statistics
(aggregated screen and feature usage)
Improving the Service 14 months from collection
Purchase records
(subscription product ID, purchase state)
Verifying and restoring subscription entitlement Deleted when the subscription ends (Google Play retains its own records)
Support enquiries
(message body, contact address for replies)
Responding to your enquiry 3 years after the enquiry is resolved
About the device identifier
We do not store the raw Android ID. We store only an irreversible SHA-256 hash of it, and we use that value solely to manage the free trial. The value alone cannot identify you.

2. How we collect it

3. Processors and third parties

We do not sell your personal information. We rely on the following processors to operate the Service.

ProcessorPurposePrivacy policy
Google LLC (Firebase Authentication)Issuing and storing the anonymous accountLink
Google LLC (Firebase Crashlytics)Collecting and analysing crashesLink
Google LLC (Google Analytics for Firebase)Aggregating usage statisticsLink
Google LLC (Google Play Billing)Processing subscriptions and checking their stateLink

These processors may store data on servers outside your country. The data, purposes and retention periods for such transfers are as listed above.

4. Data that never leaves your device

The following stays on your device and is never sent to us.

Uninstalling the app removes all of it.

5. Your rights and how to request deletion

You may ask us to access, correct, delete, or stop processing your personal information at any time.

How to request deletion of your data

  1. Data stored on your device: uninstalling the app removes your vehicles, settings and activity history from the device. No request is needed.
  2. Data we hold (anonymous account, device identifier hash, free trial record): email sourcingtree.cs@gmail.com with the subject “[Account Deletion Request]” and the name of the app you use.
  3. The same steps are shown in the app under More > Account & Data Deletion.

We complete the deletion and reply within 10 days. Deleted anonymous accounts and trial records cannot be recovered.

Purchase and subscription records retained by Google Play cannot be deleted by us, as they are kept to meet legal obligations.

Full guide: Account & Data Deletion

6. Deletion

We delete personal information without delay once its retention period ends or its purpose is met. Electronic files are erased so that they cannot be recovered; any printed material is shredded or incinerated.

7. Security

8. Children

We do not knowingly collect personal information from children under 14. If we learn that we have, we delete it immediately.

9. Contact

10. Changes to this policy

We post any changes on this page. Significant changes are announced at least 7 days before they take effect.

Published: 6 August 2026
Effective: 6 August 2026