WGRALGO Financial Calculators is a free, open-source Android APK that provides simple financial calculators for debt repayment, mortgage refinance estimates, simple loans, amortization schedules, ROI, budgeting, compound interest, lease vs own car comparisons, and rent vs own home comparisons.
The app is designed for serious people with limited resources who want practical tools without subscriptions, ads, accounts, or corporate money grabs.
The calculators are for educational and informational purposes only. They are not financial, legal, tax, investment, or lending advice.
- Debt Repayment
- Mortgage Refinance (P&I only)
- Simple Loan
- Amortization Schedule
- ROI (Return on Investment)
- Budget
- Compound Interest
- Lease vs Own (Car)
- Rent vs Own (Home)
WGRALGO Financial Calculators is offline-first.
- No ads.
- No account.
- No analytics.
- No trackers.
- No subscription.
- No cloud sync and no backend server.
- All calculator inputs stay on your device.
- The APK does not request the Android
INTERNETpermission.
See PRIVACY.md for the full privacy statement.
- Download
WGRALGO_Financial_Calculators_v1.0.0.apkfrom the v1.0.0 release. - (Optional) Verify the download:
sha256sum -c WGRALGO_Financial_Calculators_v1.0.0.apk.sha256 - On your Android device, allow installation from unknown sources for your browser/file manager.
- Open the APK and install.
If you installed an earlier test/debug build: you may need to uninstall the old APK first before installing v1.0.0. This is because the official public APK uses a new proper release signature, and Android will refuse to install over a build signed with a different key.
These calculators are provided for educational and informational purposes only. They do not constitute financial, legal, tax, investment, or lending advice, and they do not replace disclosures or official lender calculations.
Interest is modeled using daily compounding with a 360-day year and fixed 30-day months; payments are assumed at period end. Real products can differ (fees, day-count rules, escrow, statement cycles, taxes, rounding, etc.). Always verify important financial decisions using official statements and qualified professionals.
This project is licensed under the GNU General Public License v3.0 (GPL-3.0-only). See LICENSE.
Third-party dependencies remain under their own licenses — see THIRD_PARTY_NOTICES.md.
Created and maintained by WGRALGO / The Wealth Gap Resolution Algorithm™ Inc.
Project direction, testing, and public release decisions by Richard "Rich" BlackMan / WGRALGO.
Original web calculator code assistance by ChatGPT by OpenAI.
Android APK build and packaging assistance by Claude Code by Anthropic.
See CONTRIBUTORS.md.
| Home | Calculators | Input |
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| Result | About / Privacy |
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External websites are separate from the APK and may have their own privacy policies. The APK itself contains no external links, social media links, or donation links.
- Security reports: see SECURITY.md