This Privacy Policy describes how Diezl (“we,” “our,” or “us”) collects, uses, and protects your information when you use the Diezl mobile application and web experience (the “Application”). We are committed to protecting your privacy and being transparent about our data practices.
Information We Collect
Account Information
Email Address: We collect your email address when you create an account using our email OTP (One-Time Password) authentication system. Your email is used for account authentication and communication purposes.
Profile Information
Name: You may optionally provide your name when setting up your profile. This information is stored securely in our database.
Usage Data
Load Calculations: The Application stores your load calculation history and data locally on your device, including:
- Origin and destination locations (city and state)
- Rate information (flat rate or per-mile rate)
- Loaded miles, weight, and deadhead miles
- Fuel efficiency settings
- Equipment type selections
- Cost adjustment preferences (factoring fees, dispatch fees, fixed costs)
Smart Paste Events: When you use the Smart Paste feature, the Application tracks usage events locally, including timestamps and parsing results. This data is stored on your device.
Voice Input (Speech-to-Text)
When you use the “Speak load details” feature, the Application may access your device microphone and speech recognition services to convert spoken load details into text.
- We request microphone and speech recognition permissions only when you choose to use this feature.
- Voice input is used solely to transcribe your spoken load details into text for your review and editing.
- We do not intentionally store raw audio recordings on our servers.
- If you choose to process transcribed text with Smart Paste, that text is handled under the Smart Paste processing terms described below.
User Preferences
The Application stores your preferences locally, including:
- Fuel efficiency (MPG) settings
- Factoring fee preferences
- Dispatch fee preferences
- Fixed cost per mile settings
- Voice UI preferences/state (for example, voice privacy prompt state)
Feedback and Support
User Feedback: If you choose to provide feedback through in-app prompts, we collect your responses (binary yes/no answers) and any additional details you provide. This information is stored securely and helps us improve the Application.
Analytics and Error Tracking
Web Analytics
On the web version of the Application, we use PostHog to collect analytics data and session recordings. This includes:
- Page views and navigation patterns
- User interactions (with sensitive data masked)
- Device and browser information
- Session replay recordings (with aggressive privacy masking)
Privacy Protections: PostHog session replays use aggressive masking to protect sensitive information. Numeric values (prices, rates, weights, miles), locations (cities, states, ZIP codes), and input fields are masked in recordings.
Error Tracking
On mobile (iOS/Android), we use Sentry to collect crash reports and error logs. This includes:
- Error messages and stack traces
- Device information (OS version, device model)
- Technical diagnostic data
How We Use Your Information
We use the information we collect to:
- Provide Services: Authenticate your account, store your preferences, and enable load calculation features
- Enable Voice Transcription: Convert spoken load details into editable text
- Improve the Application: Analyze usage patterns, fix bugs, and enhance user experience
- Support: Respond to your feedback and provide customer support
- Compliance: Meet legal obligations and enforce our Terms of Service
Data Storage and Security
Local Storage
Load calculation data, preferences, and Smart Paste events are stored locally on your device using:
- Mobile (iOS/Android): AsyncStorage
- Web: localStorage
Voice-related UI preference/state (for example, whether a voice privacy prompt has been shown) may also be stored locally on your device.
Cloud Storage
- User Account Data: Your email address and profile information are stored securely in Supabase, our authentication and database provider.
- User Feedback: Feedback submissions are stored in Supabase and may be associated with your user account.
- Session Information: Authentication sessions are stored locally and expire after inactivity.
Security Measures
We use industry-standard security practices, including:
- Encrypted connections (HTTPS/TLS) for all data transmission
- Secure authentication using Supabase Auth with OTP verification
- Row-level security policies to help ensure users can only access their own data
- Regular security updates and monitoring
Third-Party Services
The Application uses third-party services, each with their own privacy terms:
Authentication and Database
Supabase: Provides user authentication and database services.
Analytics and Tracking
PostHog: Used for web analytics and session replay.
Sentry: Used for error tracking on mobile applications.
APIs and Services
Google Maps API: Used for distance calculations and geocoding.
OpenAI API: Used for Smart Paste text parsing through our backend.
U.S. Energy Information Administration (EIA) API: Used to fetch fuel price data through our backend proxy.
Device Speech Recognition Services (Apple iOS / Android OS): Voice-to-text may rely on native operating system speech recognition capabilities and related platform terms.
Smart Paste Feature
When you use Smart Paste:
- The text you paste (or choose to process from transcribed voice text) is sent to our backend server
- Our backend forwards this text to OpenAI for parsing
- OpenAI processes the text according to their policies
- Parsed information is returned to your device and used to populate load fields
- We do not intentionally store Smart Paste raw text on our servers after processing, except as needed for transient processing, security, debugging, or legal compliance
By using Smart Paste, you acknowledge this processing flow.
Voice Input Feature (Speech-to-Text)
When you use voice input:
- The app requests microphone and speech recognition permissions from your device OS
- Spoken input is transcribed into text and inserted into the load details field
- You can edit or delete transcribed text before processing
- You can stop voice input at any time
- You can revoke permissions at any time in device Settings
Your Rights and Choices
Access and Control
- You can view and update profile information in the Application
- Local data stored on your device can be cleared by uninstalling the app
Account Deletion
- To delete your account, contact: info@diezlapp.com
- Upon account deletion, we delete profile information and feedback from our database as required by applicable law
- Local device data remains until removed by you
Analytics Opt-Out
PostHog (Web): You can disable analytics via browser controls/extensions.
Sentry (Mobile): Crash reporting may be enabled to maintain app reliability.
Location Data
- Location-related data is used for distance calculations/geocoding
- We do not track your live location unless explicitly provided through app functionality
Children's Privacy
The Application is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe this has occurred, contact us at info@diezlapp.com.
Data Retention
- Account Information: Retained until account deletion, subject to legal obligations
- User Feedback: Retained until account deletion or as legally required
- Analytics Data: Retained per provider policies
- Error Logs: Retained per provider policies
- Local Storage: Remains on your device until removed
International Data Transfers
Your information may be transferred to and processed in countries other than your own, which may have different data protection laws.
Changes to This Privacy Policy
We may update this policy from time to time. We will notify users by:
- Posting the updated policy on this page
- Updating the “Last updated” date
- Providing in-app notice for material changes where appropriate
Your continued use after updates constitutes acceptance of the revised policy.
Contact Us
If you have questions about this Privacy Policy or data practices:
Email: info@diezlapp.com
This Privacy Policy is effective as of April 9, 2026.