SaveCompound vs Decision Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SaveCompound
This app provides tools to visualize financial growth and plan savings. Explore compound interest scenarios, simulate S&P 500 performance, and create personalized savings plans to achieve your financial goals.
- Compound interest calculator
- S&P 500 performance simulator
- Historical S&P 500 returns
- Savings planner
- Investment growth visualization
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The Save Compound App: Empowering Your Financial Goals The Save Compound app offers intuitive financial planning tools to help users plan and achieve their investment objectives and savings. Here’s an overview of each feature: Compound Interest Calculator Effortlessly explore compound interest scenarios by inputting your initial investment, return rate, compounding frequency, and investment period. Instantly receive a detailed breakdown, including your investment’s future value, total earned interest, contributions, and withdrawals—empowering you to visualize your financial growth with ease. S&P 500 Performance Simulator Travel back in time and immerse yourself in "what-if" scenarios by selecting custom start and end years to see how the S&P 500 performed during that period. Input your initial investment, annual contributions, and withdrawal percentages to visualize the long-term performance of your portfolio. Analyze historical market trends, fluctuations, and growth to set realistic expectations and make informed financial decisions. S&P 500 Annual and Long-Term Returns Dive into S&P 500 performance with detailed annual and multi-decade return breakdowns, including 5, 10, 20, and 50-year timeframes dating back to 1928. This showcases both short-term fluctuations and long-term trends, helping you visualize market dynamics over extended periods. Interactive growth chart allow you to simulate how your investments could have performed, empowering you to consider data-driven decisions and plan for sustainable financial results. Savings Planner Achieve your financial goals with precision! Input your target savings amount, initial contribution, interest rate, and timeframe to calculate personalized weekly and monthly savings plans. Visualize your progress with clear, actionable figures designed to keep you on track. Whether saving for a rainy day or a dream purchase, this tool empowers you to reach your goals efficiently and confidently. By combining these four powerful tools, the Save Compound app offers a comprehensive financial planning resource. Users gain valuable insights into compound interest, savings strategies, historical market trends, and investment growth over time. Whether planning for short-term goals or long-term stability, this app supports users at every stage of their financial journey. #WealthBuilding #SmartSaving #FinancialFreedom #InvestmentGrowth #FinancialEmpowerment #SavvyInvesting #FinancialPlanning #Investing #CompoundInterest #RetirementPlanning #MoneyGoals #PassiveIncome #StockMarket #Budgeting #LongTermWealth #PersonalFinance #SavingStrategies #GenerationalWealth #InvestingTips #GoalBasedInvesting
Decision Lab
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Making a major financial decision? Stop juggling spreadsheets and browser tabs. Decision Lab gives you a library of scenario-based calculators designed to answer real questions — not just crunch numbers. RUN EXPERIMENTS, NOT JUST CALCULATIONS Each calculator is built around a real decision: Should I rent or buy? Is an EV cheaper than gas over 5 years? When can I actually retire? Enter your numbers, see results instantly, and save them as experiments you can revisit anytime. 11 CALCULATORS ACROSS 5 CATEGORIES Housing: Mortgage, Rent vs Buy, Home Affordability Vehicle: Auto Loan, Car Total Cost of Ownership, EV vs Gas Wealth: Compound Interest, FIRE Number, Retirement Age Family: Child Cost Estimator Career: Real Hourly Wage SEE WHAT ACTUALLY MATTERS Every result highlights the Key Drivers — the 3 inputs that influence your outcome the most. Stop guessing which assumptions matter and focus your attention where it counts. COMPARE OPTIONS SIDE BY SIDE Rent vs Buy, EV vs Gas, and Car TCO calculators let you enter two scenarios and see a clear winner with charts over time. YOUR ASSUMPTIONS, YOUR BASELINE Set your expected investment return, inflation rate, home price growth, and more in one place. Every new experiment starts from your personal baseline — no re-entering the same numbers. SAVE, DUPLICATE, AND ITERATE Save experiments with custom titles and notes. Duplicate any result and tweak one variable to see how it changes the outcome. Your financial thinking evolves — your tool should too. FULLY OFFLINE & PRIVATE No account required. No data leaves your device. Every calculation runs locally.
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Verdict
The clearest difference is update cadence: Decision Lab at every 3 days against SaveCompound's every 12 months. On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SaveCompound ships an update every 12 months, Decision Lab every 3 days. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.
| Parameter | SaveCompound | Decision Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 12 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Floyd Thatcher | Cheng-Hsien Han |
In-app purchases
SaveCompound
No in-app purchases
Decision Lab
No in-app purchases






