Is Decidely completely free to use?

Yes, Decidely is 100% free forever. There are no subscriptions, no locked pro tiers, no credit card requirements, and no login gates. All 20+ calculators, amortization schedules, and comparison engines are fully accessible to everyone.

How does Decidely guarantee zero calculation errors or AI hallucinations?

Unlike generative AI language models that predict numbers probabilistically, Decidely executes pure deterministic client-side mathematics using standard financial equations (such as the standard amortization formula M = P[r(1+r)^n]/[(1+r)^n - 1] and compound interest formulas). Every formula, assumption, and worked example is published transparently.

What is the 20/4/10 rule for car affordability?

The 20/4/10 rule is a conservative personal finance guideline for buying a car: put at least 20% down, finance the vehicle for no longer than 4 years (48 months), and ensure total monthly vehicle expenses (loan payment, auto insurance, fuel/charging, and maintenance) do not exceed 10% of your gross monthly income.

How does Decidely compare renting versus buying a home?

Decidely's Rent vs. Buy Calculator runs a multi-year Net Present Value (NPV) projection that factors in home appreciation, mortgage interest, property taxes, insurance, routine maintenance (1% rule), and selling closing costs versus renting plus investing the down payment and monthly cash flow differences into a broad-market index fund.

What is the difference between the Debt Avalanche and Debt Snowball payoff strategies?

The Debt Avalanche method pays off debts in order of highest interest rate (APR) first, which mathematically minimizes total interest paid and results in the fastest debt freedom. The Debt Snowball method pays off debts in order of smallest balance first, which provides early psychological and behavioral wins.

How can I download and install Decidely on Android offline?

You can download the official Decidely Android v1.2 APK directly from https://decidely.site/download. The APK is 17.0 MB, cryptographically signed, requires Android 8.0+, runs 100% offline with zero data telemetry, and features all 22 verified financial calculators.

Does Decidely work without internet, cellular, or Wi-Fi?

Yes. Both the Decidely progressive web app and the standalone Android APK execute all financial mathematics completely client-side in your device runtime. You can calculate mortgages, auto loans, compound growth, and debt payoffs in airplane mode with 0ms calculation latency.

100% Free Deterministic Financial Tool

Calculate Home Affordability: 28/36 Rule

Determine the maximum home price you can comfortably afford based on your income, monthly debts, and the 28/36 DTI rule.

• Verified Financial Math • Zero Telemetry / 100% Private • Instant Client-Side Computation

Interactive Home Affordability Calculator

Can I afford a $400,000 house?

              Ready to Compute
            

Enter your financial parameters below to generate an instant, 100% deterministic breakdown with sensitivity analysis and scenario comparison.

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Mathematical Formulation & Methodology

Decidely executes pure deterministic client-side mathematics. Unlike probabilistic AI models that guess numerical results, every calculation is calculated using standard financial accounting equations:

            Front-End DTI ≤ 28% of Gross Income. Back-End DTI ≤ 36% of Gross Income (Housing + Debts).
          

Baseline Assumptions & Standards

Calculated using standard qualified mortgage 28/36 Debt-to-Income guidelines
Assumes standard homeowner insurance and property taxes included in qualifying limits
Credit score is within standard prime qualification range (680+)

Worked Example: $110,000 household income with $500/mo debts

A couple evaluating how high they can bid on home listings.

Example Inputs

Annual Income $110,000

Monthly Debts $500

Down Payment $60,000

Mortgage Rate 6.5%

Calculated Output

Max Recommended Home Price $415,000

Max Monthly Payment $2,567/mo

Front-End DTI 28.0%

Key Financial Takeaway:

With $110,000 income and $60,000 down, a $415,000 home fits cleanly within lender debt-to-income benchmarks.

Frequently Asked Questions

What is the 28/36 rule in real estate?

The 28/36 rule states that no more than 28% of your gross monthly income should go toward housing expenses, and no more than 36% toward total recurring debt obligations (housing + loans + cards).

Can I get approved for a mortgage with higher than 36% DTI?

Yes. Many conventional lenders allow up to 43% or even 45% DTI with strong credit, and FHA loans can occasionally permit up to 50% DTI, though this carries higher financial stress.

Calculate Home Affordability: 28/36 Rule

Interactive Home Affordability Calculator

Mathematical Formulation & Methodology

Baseline Assumptions & Standards

Worked Example: $110,000 household income with $500/mo debts

Example Inputs

Calculated Output

Frequently Asked Questions

What is the 28/36 rule in real estate?

Can I get approved for a mortgage with higher than 36% DTI?

Related Decision Tools & Calculators

Mortgage Calculator →

Rent vs Buy Calculator →

Down Payment Calculator →

Loan Calculator →