Comparison

Compound Interest Calc + vs Portfolio Lab

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 +

Calculate compound interest and future investment values with various parameters like principal, interest rate, and additional deposits. Export results to PDF or CSV and compare saved calculations.

Highlights
  • Compound interest calculation
  • Future value projection
  • Support for principal, interest, duration, inflation, and deposits
  • Flexible compounding and deposit frequencies
  • Detailed results including inflation-adjusted balance
  • PDF and CSV export
  • Save and compare calculations
Features
Read full description

Compound Interest Calc + is the best app for quickly calculating compound interest and the future value of investments. Compound Interest Calc + features: · support for starting principal, interest, duration, inflation and additional deposits · support for additions to be made at the beginning or end of the period · daily, weekly, bi-weekly, monthly, bi-monthly, quarterly, semi-annual and annual compound frequency and additions frequency options · results that include final balance, inflation adjusted, total interest and total additions · PDF and CSV (Excel or Numbers) export options · saving of calculations for viewing later · comparing the results of saved calculations · a complete amortization schedule · a beautifully designed interface · available in English, French, and Spanish! I love feedback! I want this app to work for you. Let me know if you’d like to see any additional features or if something is not quite working correctly. You can submit feedback right from within the app.

About

Portfolio Lab

Features
Read full description

Portfolio Scenario Lab helps you estimate a range of possible portfolio outcomes using Monte Carlo simulation. Instead of showing one fixed projection, the app runs up to 100,000 market scenarios using your assumptions for starting balance, expected annual CAGR, volatility, contributions, withdrawals, inflation, taxes, crash cycles, and time horizon so you understand your true risk/rewards on your investments. Use it to explore questions like: • How much could my portfolio grow over time? • What is my chance of reaching a portfolio goal? • How likely is my retirement portfolio to last? • How much could I withdraw in retirement? • How much would I need to contribute to reach my goal? • How do contributions, withdrawals, inflation, taxes, and volatility affect my outcome? • How much risk am I taking? Key features: • Build Wealth mode for long-term investing • Retirement Withdrawals mode for portfolio survival planning • Monte Carlo simulation with percentile outcomes • Median, mean, best-case, and worst-case results • Goal probability, survival probability, and shortfall risk • Required Monthly Contribution estimate • Sustainable Withdrawal Estimate • Inflation-adjusted “today’s dollars” view • Nominal future-dollar results • Simplified tax estimates and tax impact projection • Maximum drawdown analysis • Drawdown duration and recovery insights • Loss probability and return probability charts • Scenario path charts • Ending value distribution • Extreme crash and recovery cycle stress testing • Save and compare simulations • Optional private iCloud backup and restore • PDF, Excel, CSV, share text, and share card exports with premium unlock • Simple educational explanations for assumptions and limitations Portfolio Scenario Lab is designed to be simple, visual, and easy to understand. It is built for investors who want a clearer picture of possible future outcomes without needing complicated spreadsheet models. Disclaimer: This app is for educational purposes only and does not provide financial, investment, retirement, tax, or legal advice. Simulations are based on user-selected assumptions and may not reflect actual market performance. Tax estimates are simplified and may not reflect your personal tax situation.

Screenshots

Compound Interest Calc +4 screens
Portfolio Lab4 screens

Verdict

The call

The clearest difference is price: Portfolio Lab at Free against Compound Interest Calc +'s $2.99. Compound Interest Calc +'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence 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

Portfolio Lab is free to download; Compound Interest Calc + costs $2.99 up front. Portfolio Lab sells 1 one-off in-app purchase. Compound Interest Calc + asks for nothing beyond the download.

UpkeepUpdate frequency

Compound Interest Calc + ships an update fortnightly, Portfolio Lab every 10 days. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Compound Interest Calc + versus Portfolio Lab: the parameters behind the verdict, then further details
ParameterCompound Interest Calc +Portfolio Lab
Price$2.99Free — better
Rating4.8 (35 ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings35 — better—
Update frequencyFortnightlyEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size1 MB8 MB
Age rating4+4+
DeveloperAdam FahlmanANDREW MOSES CHEDID

In-app purchases

None

Compound Interest Calc +

No in-app purchases

1 purchases

Portfolio Lab

One-time1
  • Premium Lifetime Unlock$4.99

Questions

Is Compound Interest Calc + free?
Compound Interest Calc + costs $2.99, with no in-app purchases.
Is Portfolio Lab free?
Portfolio Lab is free to download, with in-app purchases available.
Do Compound Interest Calc + or Portfolio Lab have ads?
Portfolio Lab shows ads; Compound Interest Calc + does not.
Which is updated more often, Compound Interest Calc + or Portfolio Lab?
Compound Interest Calc + ships an update fortnightly, and Portfolio Lab every 10 days. Most recently, Compound Interest Calc + was updated on October 21, 2026 and Portfolio Lab on October 8, 2026.

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