Privacy Policy for Stackr
Welcome to Stackr ("the App"), operated by TYMER OÜ. Your privacy matters to us. Stackr is designed to be local-first: your budgeting data stays on your device by default unless you choose to use optional cloud, AI, backup, analytics, or advertising features.
1. Data We Collect and Use
1.1 Financial Data
Stackr lets you manually log transactions, set budgets, track income, create savings goals, and view spending insights.
This may include:
- Transaction amounts
- Categories
- Merchant names
- Dates
- Optional notes
- Budgets
- Savings goals
- Monthly income or budget setup values
By default, this data is stored locally on your device and is used to power dashboards, budgets, analytics, roasts, exports, and reminders.
We do not sell your personal financial data.
1.2 Receipt Scanning and OCR
Receipt scanning is optional.
If you use receipt scanning, Stackr may process the receipt image to extract details such as merchant, amount, date, and category.
Receipt images are used only to provide the scan result. Stackr does not save receipt images as part of your transaction history unless a future version explicitly offers that feature and asks for permission.
You can always log transactions manually without scanning receipts.
1.3 AI Roasts and Spending Commentary
Stackr generates spending commentary and "roasts" based on the information you provide, such as:
- Transaction amount
- Category
- Merchant name
- Currency
- Language
- Budget context
- Roast personality setting
- Spending patterns inside Stackr
AI processing may happen through secure backend services operated or configured by TYMER OÜ.
To improve roast quality, Stackr may store generated roast text and limited non-sensitive context such as:
- Language
- Category
- Merchant type or merchant context
- Amount range
- Budget state
- Model or prompt version
- Roast personality setting
- Validation result
Stackr does not store receipt text, raw notification text, raw user IDs, or exact analytics identifiers for roast-quality review.
Generated roast text may contain merchant names or amounts because those details can appear inside the roast itself.
1.4 User Profile and Preferences
Stackr stores app preferences such as:
- Currency
- Language
- Theme
- Savage Mode
- Roast personality
- Spending personality
- Notification preferences
- Gamification data such as achievements or streaks
These are used to personalize the app experience.
1.5 Product Analytics
If product analytics are enabled, Stackr may collect limited usage events to understand app performance and improve features.
Analytics events may include:
- Onboarding progress
- Feature usage
- Roast generation success or failure
- Premium screen views
- Purchase flow events
- Review prompt interactions
- Cloud backup success or failure
Analytics events are designed not to include merchant names, notes, receipt text, exact transaction amounts, or roast text.
2. Account and Cloud Backup
Stackr can be used without creating an account.
If you choose to sign in, Stackr may use Google sign-in to identify your account and enable cloud backup or restore.
Cloud backup may include Stackr app data such as transactions, budgets, preferences, settings, and other data needed to restore your app state.
Cloud backup is optional. If you do not connect an account, your data remains local to your device unless you use another online feature such as AI roast generation, ads, billing, analytics, or receipt processing.
You can request deletion of cloud-side data by contacting:
3. Notification Features
Stackr may send optional notifications such as:
- Spending reminders
- Budget alerts
- Monthly recap prompts
- Savings recap prompts
- Payment logging suggestions
If you enable payment notification suggestions, Stackr may read eligible notification content on your device to suggest a possible transaction amount and merchant.
Raw notification text is not retained, and no transaction is saved automatically without your review.
You can manage notifications inside Stackr and through Android system settings.
4. Third-Party Services
Stackr may use third-party services to operate app features.
4.1 Google Play Billing
Google Play Billing is used to manage Premium subscriptions.
Purchases are processed by Google Play. Stackr receives purchase and entitlement information needed to unlock Premium features, but we do not receive your full payment card or banking details.
4.2 Google AdMob
The free version of Stackr may show ads through Google AdMob.
Google and its partners may process advertising identifiers, consent choices, device information, approximate location, and ad interaction data according to Google's policies and your consent settings.
You can manage ad privacy choices through Stackr where available, Android settings, and Google settings.
4.3 AI and Backend Providers
Stackr may use backend infrastructure and AI providers to generate roasts, process receipt scans, verify subscription status, manage cloud backup, and improve app quality.
Data sent to these services is limited to what is needed to provide the requested feature.
4.4 Google Sign-In
If you connect an account, Google sign-in may be used to authenticate you.
Stackr may receive basic account information such as your email address or account identifier to manage cloud backup and account features.
5. Data Security
We use reasonable technical measures to protect your data, including encrypted network connections where data is transmitted.
Local data is stored on your device. Your device security, Android settings, backups, and account security also affect how your data is protected.
No method of electronic storage or transmission is 100% secure.
6. Data Sharing
We do not sell your personal financial data.
We may share limited data with service providers only as needed to operate Stackr, including:
- Subscription verification
- Cloud backup
- AI roast generation
- Receipt scanning
- Advertising
- Analytics
- App diagnostics
- Account authentication
7. Your Rights and Data Deletion
You can delete local Stackr data by uninstalling the app or clearing app storage in Android settings.
If you used cloud backup or account features, you can request deletion of cloud-side data by emailing:
Please include the email address associated with your Stackr account.
You can also export certain app data where export features are available.
8. Children
Stackr is not intended for children under 13.
9. Changes to This Policy
We may update this Privacy Policy from time to time. Updates will be posted on this page with a new effective date.
Continued use of Stackr after changes means you accept the updated policy.
10. Contact Us
If you have questions or deletion requests, contact:
© 2026 TYMER OÜ. All rights reserved.