Privacy Policy
Effective Date: October 23, 2026
Last Updated: November 2, 2026
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1. Introduction
BuildLog.diy ("BuildLog.diy," "we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application, website at buildlog.diy (the "Site"), API, and any related services (collectively, the "Service").
Please read this Privacy Policy carefully. By using the Service, you consent to the collection and use of information in accordance with this policy.
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2. Information We Collect
2.1 Information You Provide
Account Information:
- Email address
- Password (hashed and stored securely)
- Display name
- Profile picture (if provided via third-party sign-in)
Third-Party Sign-In Data:
When you sign in with Apple or Google, you authorize those providers to share certain information with us:
- Apple: Your name and email address (if you choose to share)
- Google: Your name, email address, and profile picture
User Content:
- Project names, descriptions, and status
- Task names, descriptions, and completion status
- Work session notes and durations
- Materials and cost information
- Photos and videos uploaded to the Service
- Time-lapse videos generated from your session photos
Beta Waitlist:
If you sign up to beta test BuildLog.diy at [buildlog.diy/beta](https://buildlog.diy/beta), we collect:
- The email address you use for the App Store or Google Play
- Which phone you use (iPhone, Android or both)
- Your country, so we know when the beta is open where you live
- Your name and a short note about what you build, if you choose to give them
Communications:
- Messages you send to us
- Feedback and support requests
2.2 Information Collected Automatically
Device Information:
- Device type and model
- Operating system and version
- Unique device identifiers
- App version
Usage Information:
- Features accessed within the Service
- Session duration and frequency
- Crash logs and diagnostic data
- Network connectivity status
Log Data:
- IP address (stored temporarily for security)
- Browser type and version
- Referring/exit pages
- Date and time of access
Note: We do not store personally identifiable information (PII) in our server logs.
2.3 Information from Third Parties
We may receive information from:
- Apple (when you sign in with Apple ID)
- Google (when you sign in with Google)
- Analytics providers (aggregated, non-identifying data)
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3. How We Use Your Information
We use your information to:
Provide the Service:
- Create and manage your account
- Authenticate your identity
- Process sign-in via email/password or third-party providers
- Sync your data across devices
- Generate time-lapse videos from your photos
Run Our Beta Program:
- Keep the beta waitlist and invite testers in batches, in the countries where the beta is open
- Send your beta invite through Apple TestFlight or Google Play
- Send you beta updates and ask for your feedback
Improve the Service:
- Monitor and analyze usage patterns
- Fix bugs and improve performance
- Develop new features
- Respond to support requests
Security:
- Detect and prevent unauthorized access
- Identify and address security vulnerabilities
- Enforce our Terms of Service
Communication:
- Send service-related notifications (account changes, security alerts)
- Respond to your inquiries
- Send marketing communications (with your consent, where required)
Legal Compliance:
- Comply with applicable laws and regulations
- Respond to valid legal requests
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4. Data Security
We take security seriously and use industry-standard measures to protect your data:
4.1 Encryption
- All data sent between the BuildLog.diy app or website and our servers is encrypted
- Your personal details (such as your email address, username and display name) are encrypted when stored on our servers
- We never store your password itself, only a secure one-way hash of it
4.2 Access to Your Data
- Your projects, photos and videos are only shown to your signed-in account
- On the Free plan, time-lapse videos stay on your device and are not uploaded to our servers. Photos are backed up within the Free plan's storage allowance
- Our support team can see account details such as your email address, plan and storage usage when helping you
4.3 Account Protection
- Sign-in sessions expire automatically, and signing out ends your session
- We limit repeated sign-in attempts to protect against password guessing
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5. Data Storage and Retention
5.1 Local Storage
- BuildLog.diy stores data locally on your device using SQLite
- You are responsible for backing up your local data
- Uninstalling the app may result in permanent data loss if not synced to the cloud
5.2 Cloud Storage
- When cloud sync is enabled, your data is stored on our secure servers
- Photos and videos count toward your storage quota
- Storage usage is tracked and metered
5.3 Data Retention
| Data Type | Retention Period |
| Account data | Until account deletion |
| Project/task/session data | Until account deletion |
| Photos and videos | Until account deletion or manual deletion. If a paid plan ends, cloud copies over your plan's storage are removed after 60 days' notice (see our Terms of Service) |
| Server logs | 30 days (rotated) |
| Crash logs | 90 days |
| Beta waitlist sign-ups | Until the beta program ends, or sooner if you ask us to remove you |
| Reason | Information Shared | Recipient |
| Service providers | Minimal necessary | Cloud infrastructure, analytics |
| Legal requirements | As required | Government or law enforcement |
| Protection of rights | As necessary | Legal counsel, authorities |
| Business transfers | All data | Acquirer in merger/acquisition |
| Processing Purpose | Legal Basis |
| Account creation and authentication | Contract performance |
| Providing the Service | Contract performance |
| Security and fraud prevention | Legitimate interests |
| Analytics and improvements | Legitimate interests |
| Marketing communications | Consent |
| Beta waitlist and invites | Consent |
| Legal compliance | Legal obligation |