Comparison

Compound Interest Calc vs Coast FIRE Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Compound Interest Calc

Plan your financial future with a powerful compound interest calculator. It helps you visualize investment growth with periodic contributions and plan retirement withdrawals with inflation adjustments. Offers detailed breakdowns and interactive charts for informed financial decisions.

Highlights
  • Calculate investment growth with contributions
  • Plan retirement withdrawals with inflation
  • Interactive growth and depletion charts
  • Year-by-year detailed breakdowns
  • Real-time calculations
  • Works offline
Features
Read full description

Compound Interest Calculator - Your Financial Planning Companion Plan your financial future with precision using our powerful compound interest calculator. Whether you're saving for retirement or planning investment growth, this app provides the tools you need. KEY FEATURES: Growth Mode • Calculate investment growth with periodic contributions • See how your money grows over time • Adjust contribution frequency (Yearly, Quarterly, Monthly, Weekly) • View detailed year-by-year breakdowns • Visualize growth with interactive charts Withdrawal Mode • Plan retirement withdrawals with inflation adjustments • Calculate how long your savings will last • Account for inflation in your planning • See time to zero calculations • Understand total withdrawal amounts Powerful Visualizations • Interactive line charts showing growth or depletion • Year-by-year tables with detailed breakdowns • Easy-to-read currency formatting • Touch points on charts to see exact values Beautiful Material Design • Clean, modern interface • Smooth animations and transitions • Intuitive navigation • Accessible design for all users Smart Features • Real-time calculations as you type • Input validation to prevent errors • Handles edge cases gracefully • Optimized for performance • Works offline - no internet required PERFECT FOR: • Retirement planning • Investment strategy • Savings goals • Financial education • Wealth building GROWTH MODE CALCULATIONS: Enter your starting balance, expected annual return rate, investment duration, and periodic contributions. The app calculates your final investment value, total contributions, and profit using the compound interest formula. WITHDRAWAL MODE CALCULATIONS: Plan your retirement by entering your starting balance, expected return rate, withdrawal amount, and inflation rate. See how long your money will last and plan accordingly. WHY CHOOSE THIS CALCULATOR? • Accurate compound interest formulas • Beautiful, easy-to-use interface • Fast and responsive Whether you're a financial professional, student, or someone planning for the future, this calculator provides the insights you need to make informed decisions. Download now and take control of your financial future! --- Note: This calculator is for educational and planning purposes. Actual investment returns may vary. Consult with a financial advisor for personalized advice.

About

Coast FIRE Calculator

This app helps you calculate the investment amount needed to achieve financial independence by retirement. It models your portfolio growth based on various financial assumptions, allowing you to plan for a secure future.

Highlights
  • Calculate Coast FIRE number
  • Project year-by-year growth
  • Compare different scenarios
  • Track progress towards goals
  • Save and manage multiple calculations
  • Flexible retirement age and income planning
Features
Read full description

Ever wondered how much you need to invest today so your retirement nest egg grows on its own? The Coast FIRE Calculator helps you answer that question. “Coast FIRE” is a strategy within the FIRE (Financial Independence, Retire Early) movement that involves saving and investing enough early in life that, without further contributions, your portfolio will grow to fund retirement. Once you reach your Coast FIRE number, you can shift to work that covers only your current expenses while compound interest does the heavy lifting. Key Features: * Easy inputs: Enter your current age, target retirement age, desired retirement income, inflation assumptions and your preferred safe withdrawal rate. * Automatic Coast FIRE calculation: Instantly see your Coast FIRE number and the age at which you’ll hit it, based on your assumptions. * Scenario comparison: View default and slower‑growth scenarios to understand how varying investment returns change your path. * Year‑by‑year projections: Get a detailed table showing annual growth and portfolio balances from now until retirement. * Progress tracking: See your current progress toward your Coast FIRE number, both in today’s dollars and at retirement. * Save & manage calculations: Save multiple scenarios (e.g. “Coast at 30,” “Coast at 38,” “Coast at 40”) and revisit them later to track your progress. * Flexible retirement planning: Explore different retirement ages and income targets. Understand how changes in inflation, investment growth and withdrawal rates affect your nest egg. Coasting to financial freedom doesn’t mean quitting work entirely; it means knowing your future is secure so you can enjoy life on your own terms. Download the Coast FIRE Calculator to demystify your retirement goals and see if you’re on track for financial independence.

Screenshots

Compound Interest Calc4 screens
Coast FIRE Calculator4 screens

Verdict

The call

The clearest difference is price: Compound Interest Calc at Free against Coast FIRE Calculator's $4.99. Compound Interest Calc also leads on rating (4.8 vs 1.0) and ratings volume (6.7K vs 1). Coast FIRE Calculator's advantage is ads (none vs shown) and update cadence (every 2 days vs every 3 months). On in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Compound Interest Calc is free to download; Coast FIRE Calculator costs $4.99 up front. Compound Interest Calc sells 1 one-off in-app purchase and Coast FIRE Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Compound Interest Calc holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Compound Interest Calc has 6.7K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Compound Interest Calc ships an update every 3 months, Coast FIRE Calculator every 2 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

Scorecard6 real differences · 4 level
Compound Interest Calc versus Coast FIRE Calculator: the parameters behind the verdict, then further details
ParameterCompound Interest CalcCoast FIRE Calculator
PriceFree — better$4.99
Rating4.8 (6.7K ratings) — better1.0 (1 ratings)
Positive reviews68.6% of reviews—
Number of ratings6.7K — better1
Update frequencyEvery 3 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size16 MB30 MB
Age rating4+17+
DeveloperDane HankamerAtaraxia Labs

Bugs and requests

Compound Interest Calc

Reported bugs

4 issues
  • Withdrawal calculations showing incorrect results
  • App crashing on certain device models
  • Scaling issues on iPad devices
  • Compound interest calculations not accurate for weekly/monthly contributions

Requested features

5 requests
  • Add dividend calculation option
  • Allow for daily compound interest calculations
  • Implement a save/load feature to retain user inputs
  • Add ability to input one-time lump sum contributions
  • Provide inflation-adjusted withdrawal calculations

Coast FIRE Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Compound Interest Calc

One-time1
  • Remove Ads$1.99
1 purchases

Coast FIRE Calculator

One-time1
  • Ad-Free Usage$8.99

Questions

Is Compound Interest Calc free?
Compound Interest Calc is free to download, with in-app purchases available.
Is Coast FIRE Calculator free?
Coast FIRE Calculator costs $4.99, and also offers in-app purchases.
Which has better reviews, Compound Interest Calc or Coast FIRE Calculator?
Compound Interest Calc is rated higher. Compound Interest Calc averages 4.8 out of 5 from 6.7K ratings, while Coast FIRE Calculator averages 1.0 from 1 ratings.
Do Compound Interest Calc or Coast FIRE Calculator have ads?
Compound Interest Calc shows ads; Coast FIRE Calculator does not.
Which is updated more often, Compound Interest Calc or Coast FIRE Calculator?
Compound Interest Calc ships an update every 3 months, and Coast FIRE Calculator every 2 days. Most recently, Compound Interest Calc was updated on November 7, 2026 and Coast FIRE Calculator on November 9, 2026.

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