Coastful: FIRE Calculator
Coast FIRE & Retirement
About
Calculate your exact retirement or Coast FIRE year based on your real expenses, portfolio allocation, and chosen assumptions. Model inflation, run what-if scenarios, and track your net worth with this offline, privacy-focused financial planning tool.
What's New in Coastful
2.0
July 8, 2026
What's new • A fresh new look — a cleaner, more modern design with refreshed icons, crisper contrast, and full Dark Mode support. • A guided first-run tour walks you through adding assets, tracking your net worth, and building your personalized FIRE plan. • Personalized Safe Withdrawal Rate is now FREE — your FIRE number comes from your real asset mix, with a per-asset expected return and your own inflation assumption. • Solve it two ways: see the year you reach FIRE, or set a target date and see the savings needed to get there. • Clearer paywall with a side-by-side Free vs Pro comparison.
MoreSubscription plans
Coastful Pro (Monthly)
Unlock Coast FIRE, personalized SWR, and what-ifs.
In-App Purchases
$19.99
Coastful Pro (Lifetime)
Coastful Pro forever — all Pro features
Developer apps
FAQ
What is Coastful?
Coastful is a FIRE (Financial Independence, Retire Early) and retirement calculator designed to project your exact retirement or Coast FIRE year. It uses your real expenses, portfolio allocation, and chosen assumptions for personalized calculations.
How does Coastful calculate my FIRE year?
Coastful calculates your FIRE year by factoring in your actual asset mix to determine a personalized Safe Withdrawal Rate (SWR), unlike generic 4% rules. It also models real-dollar inflation and allows you to set target savings or a target date.
Does Coastful have ads?
No, Coastful is ad-free. The app is designed with privacy in mind and does not contain advertisements or ad SDKs. Anonymous usage analytics are opt-in and can be turned off.
What are the features of Coastful Pro?
Coastful Pro offers advanced features like Coast FIRE simulation to find when you can stop contributing, unlimited asset tracking, and iCloud Sync to keep your data consistent across devices. It is available via monthly subscription or a lifetime purchase.
Is my financial data secure with Coastful?
Yes, your data lives on your device and is not stored on backend servers. Coastful does not require bank logins, and iCloud Sync (Pro) uses your own iCloud account for data transfer, ensuring high privacy.
What devices does Coastful support?
Coastful is available for iPhone and iPad devices. It offers offline functionality, meaning you can use it without an internet connection.
How often is Coastful updated?
The latest version of Coastful is 2.0, last updated on July 8, 2026. Updates typically include new features, performance improvements, and bug fixes to enhance the user experience.
What is the cost of Coastful?
The basic version of Coastful is free and includes the personalized calculator. Coastful Pro, offering advanced features, is available as a monthly subscription for $1.99 with a 3-day free trial, or as a one-time lifetime purchase.