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Isaac vs Delphina: Financial Planning

A deep dive into financial planning: Compare Isaac's free UK retirement calculator with Delphina's comprehensive, ongoing financial planning and wealth building platform.

Planning Scope & Depth

Isaac

Retirement-Focused

Isaac is a focused retirement calculator. It provides pension projections, scenario modelling, and year-by-year forecasts to age 100. Clean and focused.

Manual Input

You manually enter your financial data. No automatic bank sync means you update projections yourself when circumstances change.

No Daily Budgeting

Isaac doesn't include daily expense tracking or budgeting. Retirement planning and daily finances are separate.

Delphina

30-Year Dynamic Forecasting

Comprehensive 30-year cash flow projections that automatically update when your income, expenses, or goals change.

Complete Integration

Connects to your banks, investments, and financial accounts for real-time, accurate financial planning based on actual data.

Ongoing Planning

Continuous financial planning with regular updates, scenario modelling, and proactive recommendations as your life evolves.

UK-Specific Financial Planning

Pension Optimisation

Isaac

State pension and workplace pension projections. Multiple retirement age scenarios and couple planning available.

Delphina

Full pension optimisation including workplace pension analysis, SIPP strategies, tax-efficient contribution planning, and retirement income blending.

Tax-Efficient Planning

Isaac

UK income tax modelling including Scottish bands, Inheritance Tax, and Business Relief. ISA allowance tracking included.

Delphina

Comprehensive tax-efficient planning including ISA and SIPP usage, capital gains planning, and optimal withdrawal strategies in retirement.

Life Event Planning

Isaac

Property modelling in projections
Inheritance planning included
No dedicated education planning
No dedicated career change tool

Delphina

House purchase planning
Education funding projections
Career change modelling
Inheritance planning
Life event scenario analysis

Scenario Planning & Decision Support

What-if Analysis

Isaac

Unlimited scenario creation and side-by-side comparison. You can model different retirement ages, savings rates, and spending patterns.

Delphina

Advanced scenario modelling with Monte Carlo simulations. Test different career paths, savings strategies, retirement ages, and lifestyle choices with probabilistic outcomes.

Investment Impact Analysis

Isaac

Models ISAs, pensions, property, and other assets in retirement projections. Drawdown strategy modelling available.

Delphina

Full investment portfolio integration with real-time net worth via open banking. See how your asset allocation and contributions affect retirement readiness.

The Bottom Line

Isaac is a solid, focused retirement calculator with year-by-year projections, scenario modelling, and UK tax features. If you want comprehensive financial planning that connects daily budgeting to retirement, Delphina provides that breadth. If you want focused retirement planning, Isaac is a legitimate choice.