App Intel

FinStack : RPN Calculator Live

RIVER PRIDE5 apps · 191 installsProductivityFreeIn-app purchases: $9.99 per itemcom.riverpride.finstack

Professional RPN calculator with TVM, NPV, IRR & Cash Flow

Total installs
100
exact · Play shows 100+
Installs / day
—
measured after our second crawl (about a day)
Rating
—★
— ratings · — reviews
Released
21 Jun 2026
4mo ago
Last update
1 Oct 2026
v1.1.0 · 10d ago
Countries
—
not checked yet

Install history

exact counter from Google Play
Not enough history yet — check back tomorrow
Not enough history yet — check back tomorrow

Installs per day · last 90 days

Not enough history yet — check back tomorrow

Change timeline

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Permissions

5 in 1 group
0 Sensitive1 Notable4 Routine
OtherNotable5

Access to miscellaneous device features that don't fit other categories

  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
  • Read Google service settings stored on your deviceread Google service configuration · com.google.android.providers.gsf.permission.READ_GSERVICES

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
FinStack is a professional RPN financial calculator designed for finance professionals, accountants, analysts, engineers, business users, real estate professionals, and students. Featuring a familiar HP12C-style layout, a powerful Reverse Polish Notation (RPN) engine, advanced financial solvers, and integrated notes, FinStack helps you calculate faster, document your work, and stay productive—all within a secure, completely offline workspace. Whether you're evaluating investments, solving loan and mortgage problems, performing business calculations, or preparing financial reports, FinStack delivers the speed, precision, and reliability professionals expect. PROFESSIONAL FINANCIAL CALCULATIONS • True 4-Level RPN Stack (X-Y-Z-T): Perform faster calculations with a live stack display that minimizes keystrokes and improves calculation accuracy. • Advanced TVM Solver: Instantly solve Time Value of Money (TVM) calculations including Present Value (PV), Future Value (FV), Payments (PMT), Interest Rates, Number of Periods (N), loans, mortgages, and investment scenarios. • Cash Flow Analysis: Analyze uneven cash flows, calculate Net Present Value (NPV), Internal Rate of Return (IRR), and evaluate investment opportunities with confidence. • Amortization Schedules: Generate detailed loan schedules showing principal, interest, payment breakdowns, and remaining balances. • Interest Conversion: Convert nominal and effective interest rates quickly and accurately. • Depreciation Methods: Calculate Straight Line (SL), Sum-of-the-Years'-Digits (SOYD), and Declining Balance (DB) depreciation. • Statistical Functions: Perform essential statistical calculations for financial and business analysis. WORK SMARTER • Integrated Notes: Record assumptions, calculations, observations, and financial workflows alongside your calculations. • Professional Financial Reports: Generate clean, structured calculation reports that are easy to review and share. • Calculation History: Keep track of previous calculations and financial workflows without losing important information. • Local Export: Save and export your reports and notes directly to your device. 100% OFFLINE. PRIVATE. SECURE. Your financial data belongs to you. FinStack performs every calculation entirely on your device without requiring cloud services. • No internet required • No advertisements • No hidden trackers • No mandatory accounts • No data collection • No external servers Every variable, calculation, note, and report remains on your device, giving you complete privacy and control over your financial information. WHY CHOOSE FINSTACK? ✓ Professional RPN workflow ✓ Classic HP12C-style layout ✓ TVM, NPV, IRR & Cash Flow analysis ✓ Amortization & Depreciation ✓ Integrated notes & financial reports ✓ Fast, accurate financial calculations ✓ 100% Offline & Private Whether you're working in finance, accounting, investment analysis, engineering, banking, education, or business, FinStack provides the professional financial tools you need in a fast, reliable, and intuitive mobile experience. Download FinStack today and experience professional financial computing on Android.

What's new

hat's New in FinStack: • 14-Day Free Evaluation: Enjoy full, unrestricted access to all HP12c financial features with zero ads. • Lifetime License Option: Switched to a single one-time purchase. No recurring subscriptions or renewals. • Ad-Based Extensions: Free 24-hour evaluation extensions available after the trial period. • Decluttered Interface: Streamlined onboarding and updated status dashboard. • Performance enhancements and stability improvements.

Growing in Productivity

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