# CoastMath: FIRE Calculator — FI & Retirement planning > Financial planning tool for retirement and FIRE (Financial Independence, Retire Early) projections. (iPhone/iPad app by Blank Slate Labs Limited Liability Company.) - Source: https://appshunter.io/ios/app/coastmath-fire-calculator/id6809539979 (this page in markdown: same URL + `.md`) - Developer: [Blank Slate Labs Limited Liability Company](https://appshunter.io/developer/1882223689) - Category: Productivity, Finance - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: +4 - Requires: iOS 17.0 · 22 MB - Languages: Brazilian Portuguese, German (Germany), Chinese (Simplified, China), European Spanish, French (France), American English, Japanese - Released: 2026-10-20 - Data updated: 2026-10-26 - Monetization: freemium ## What is CoastMath? 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 ## Key features - Year-by-year financial projections - Net worth, cash flow, and tax forecasting - Income, expense, and account tracking - Monte Carlo simulations for success chance - Stress testing for market events - Tax strategy suggestions - Exportable annual reports ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Yearly | $99.99 | per year | | Premium Monthly | $29.99 | per month | ## Is CoastMath safe? Not enough ratings yet to assess CoastMath. ## Is CoastMath legit? CoastMath: FIRE Calculator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for CoastMath is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about CoastMath ### What is CoastMath? CoastMath is a financial planning application designed to project your finances year by year, helping you visualize when you can achieve financial independence and retire early (FIRE). It allows you to input various financial details to forecast your net worth, cash flow, and taxes. ### Is CoastMath free to use? Yes, CoastMath offers a free version that includes all planning features. The free tier allows for one editable plan for 7 days after creation, with projections continuing to update thereafter. ### What are the benefits of CoastMath Premium? CoastMath Premium unlocks unlimited editable plans, plan duplication, restoration of archived plans, and CSV, PDF, and JSON exports of your annual reports. It provides full control over all your financial plans. ### How much does CoastMath Premium cost? CoastMath Premium is available for $29.99 per month or $99.99 per year. Subscriptions are charged to your Apple Account and renew automatically unless canceled at least 24 hours before the current period ends. ### Does CoastMath connect to bank accounts? No, CoastMath does not include bank connections. All balances and financial data must be entered manually by the user. ### What devices does CoastMath support? CoastMath is available on iPhone and iPad, supporting a range of iOS devices. ### How often is CoastMath updated? The latest version of CoastMath is 1.6, which was last updated on October 23, 2026. Updates typically occur to improve features and reliability. ### Does CoastMath have ads? No, CoastMath does not contain advertisements. The application is ad-free, allowing for an uninterrupted user experience. ## Version history (last 5 releases) ### 1.6 — 2026-10-23 New welcome screen headline: Plan for your life after work. ### 1.5 — 2026-10-22 Built for iPhone Duo. On the inner display, Overview, Income, Expenses, Accounts and Advanced open as two pages that meet at the fold. On the outer display, the tabs move to a side bar. ### 1.4 — 2026-10-21 CoastMath now speaks Spanish, French, German, Portuguese (Brazil), Japanese and Simplified Chinese. Money, numbers and dates follow your device language and your plan’s currency. Also in this version: an income editor fix for long unit labels, and clearer labels throughout. ### 1.3 — 2026-10-18 CoastMath Premium subscriptions: choose monthly or yearly billing to keep plans editable and unlock unlimited plans and annual report exports. ### 1.2 — 2026-10-15 Update App Store assets ## More apps by Blank Slate Labs Limited Liability Company - [Roomantic: Furniture Planner](https://appshunter.io/ios/app/roomantic-furniture-planner/id6759999318) - [Air Note: Let It Go](https://appshunter.io/ios/app/air-note-let-it-go/id6795363239) All apps by Blank Slate Labs Limited Liability Company: https://appshunter.io/developer/1882223689 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-26.*