Finstery
Finance
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Finstery helps DIY investors and early retirees stress test their portfolios with confidence. Whether you're planning for financial independence or already retired, Finstery gives you the tools to see how your strategy holds up in the real world — and in the worst-case scenarios.
Use powerful backtesting to simulate your portfolio across decades of historical data. Run Monte Carlo simulations to visualize risk and uncertainty in future returns. Explore safe withdrawal strategies and understand how different allocations respond to inflation, recessions, and market volatility.
Finstery brings clarity to one of the biggest questions in early retirement: Is my plan resilient enough?
Built for independent thinkers. Designed for long horizons.
Finstery offers optional premium features via an auto-renewable subscription.
Free Features:
• Portfolio creation
• Historical backtesting summaries and statistics
Premium Features (Subscription Required):
• Monte Carlo simulations
• Safe Withdrawal Rate analysis
Subscription pricing and terms are clearly shown before purchase.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: http://finstery.com/#privacy_policy
Ratings & Reviews
• Mortgage Payoff vs. Investing Analysis
Introducing a powerful new tool to help you decide: should you pay off your mortgage early or invest instead?
Run a Monte Carlo simulation to compare strategies using realistic market return sequences, while accounting for taxes and inflation. Explore outcomes for paying off your mortgage, investing in the market, or using a blended approach.
Make more informed financial decisions with data-driven insights — not guesswork.
The developer, Nicholas Summers, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nicholas Summers
- Size
- 8.4 MB
- Category
- Finance
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Finstery Pro Access $9.99
- Copyright
- © 2025 Nicholas Summers