CoastMath: FIRE Calculator

FI & Retirement planning

Free

CoastMath projects your finances year by year, so you can see when you can stop working and what every year after that looks like. Enter your accounts, income, expenses, homes, debts and milestones. CoastMath projects net worth, cash flow and taxes for every year of your plan. PLAN • Overview: net worth by year, the cash flow of any year, milestones and taxes over time • Year detail: income, spending, withdrawals, contributions and taxes, item by item • Income, Expenses and Accounts tabs with monthly or annual amounts • Social Security estimates, savings rules and a drawdown order • Federal, state and local income taxes, RMDs and health coverage • Advanced: milestones, assumptions and household details ANALYZE • Chance of success from Monte Carlo trials • Stress tests: historical periods, a market crash or a job loss • Withdrawal rules compared with your planned spending • Tax strategies: Roth conversions and gain harvesting that fill a bracket • Tax suggestions and SEPP 72(t) early withdrawals • Compare plans, track your actual net worth and read the annual report Explore a read-only sample plan without an account, or sign in with Apple, Google or an email link to save your own plans. FREE AND PREMIUM Every planning feature is free. Free includes one plan, editable for 7 days after you create it; its projection keeps updating after that. CoastMath Premium keeps every plan editable and adds unlimited plans, plan duplication, restoring archived plans, and CSV, PDF and JSON exports of the annual report. Premium is $29.99 per month or $99.99 per year, charged to your Apple Account. It renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings. Balances are entered manually; bank connections are not included. Projections are calculated on CoastMath's servers and need an internet connection. Projections are hypothetical estimates based on your inputs and assumptions, not financial, tax or legal advice. Terms of use: https://coastmath.com/terms License agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://coastmath.com/privacy

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Update App Store assets

Version 1.2

The developer, Blank Slate Labs Limited Liability Company, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Financial Info
    • Location
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Other Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Blank Slate Labs Limited Liability Company
Size
20 MB
Category
Finance
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
Languages
English
Age Rating
4+
Copyright
© 2026 Blank Slate Labs Limited Liability Company
  • Developer Website
  • Privacy Policy

    • More by Blank Slate Labs Limited Liability Company