Comparison

Compound Interest Calc vs Prosper

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

Prosper

Plan your financial future with interactive projections for net worth, cash flow, and retirement. Simulate major life decisions and optimize financial goals like mortgage payments. Data is stored locally for privacy with optional cloud sync.

Highlights
  • Interactive net worth and cash flow projections
  • What-if scenario testing
  • Inflation-adjusted projections
  • Mortgage optimization tools
  • Household planning with multiple profiles
  • Offline support and local data storage
Features
Read full description

See your financial future before it happens. Prosper helps you plan ahead, not just track the past. Simulate retirement, test major life decisions, optimize your mortgage, and see how your net worth could evolve over time. - Project your future with interactive net worth and cash flow projections over the next 10, 20, or 30 years. - Test what-if scenarios for salary changes, home purchases, children, major expenses, and early retirement. - View inflation-adjusted projections to understand what your money could be worth in real terms. - Optimize your mortgage with extra payment simulations, payoff comparisons, and long-term cost analysis. - Plan as a household with multiple profiles and combined long-term projections. - Stay private by default with data stored on your device, offline support, and optional cloud sync only if you enable it. Prosper is built for people pursuing Financial Independence (FIRE), planning retirement, paying off debt, and making bigger financial decisions with more confidence. Download Prosper and start simulating your financial future.

Screenshots

Compound Interest Calc4 screens
Prosper4 screens

Verdict

The call

The clearest difference is ads: Prosper at none against Compound Interest Calc's shown. Prosper also leads on review sentiment (100% vs 69%) and update cadence (every 3 weeks vs every 3 months). Compound Interest Calc's advantage is ratings volume (6.7K vs 1). On price, rating, in-app purchases and monetization model 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

Both are free to download. Compound Interest Calc sells 1 one-off in-app purchase and Prosper sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Prosper holds the better App Store score, 5.0 against 4.8. 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. Written reviews point the same way: 69% of Compound Interest Calc's written reviews are positive against 100% of Prosper's.

UpkeepUpdate frequency

Compound Interest Calc ships an update every 3 months, Prosper every 3 weeks. The most recent releases landed on October 29, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Compound Interest Calc versus Prosper: the parameters behind the verdict, then further details
ParameterCompound Interest CalcProsper
PriceFreeFree
Rating4.8 (6.7K ratings)5.0 (1 ratings) — better
Positive reviews68.6% of reviews100.0% of reviews — better
Number of ratings6.7K — better1
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size16 MB26 MB
Age rating4+4+
DeveloperDane HankamerPaulo Jose Mendes Marques

Customer experience

Compound Interest Calc

All ratings6,530 ratings
Positive95.8%
Neutral1.8%
Negative2.3%
Written reviews153 reviews
Positive68.6%
Neutral7.8%
Negative23.5%

Prosper

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Prosper

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Compound Interest Calc

One-time1
  • Remove Ads$1.99
3 purchases

Prosper

Subscriptions2
  • FP Pro - Monthly$0.991 Month
  • FP Pro - Annual$3.991 Year
One-time1
  • Pro Features$6.99

Questions

Is Compound Interest Calc free?
Compound Interest Calc is free to download, with in-app purchases available.
Is Prosper free?
Prosper is free to download, with in-app purchases available.
Which has better reviews, Compound Interest Calc or Prosper?
Prosper is rated higher. Compound Interest Calc averages 4.8 out of 5 from 6.7K ratings, while Prosper averages 5.0 from 1 ratings.
Do Compound Interest Calc or Prosper have ads?
Compound Interest Calc shows ads; Prosper does not.
Which is updated more often, Compound Interest Calc or Prosper?
Compound Interest Calc ships an update every 3 months, and Prosper every 3 weeks. Most recently, Compound Interest Calc was updated on October 29, 2026 and Prosper on October 10, 2026.

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