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Head-to-head · Retirement Planning Software

Boldin vs Flexible Retirement Planner

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Boldin #1 in Retirement Planning Software 9.4/10 Free plan · 14-day trial Free planFree trial✓ 5 of 5 features Visit Boldin
Flexible Retirement Planner #6 in Retirement Planning Software 8.8/10 Free plan Free plan✓ 5 of 5 features Visit site

Boldin leads on 0 checks, Flexible Retirement Planner on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreBoldin · 9.4/10
  • Free planboth
  • Free trialonly Boldin

Boldin scores higher on our rubric for retirement planning software: 9.4 against 8.8 out of 10; our editors rank them #1 and #6.

Boldin is the better fit for households building and comparing retirement plans. Flexible Retirement Planner is the better fit for users wanting detailed free Monte Carlo planning.

  • Boldin fits best

    Households building and comparing retirement plans

  • Flexible Retirement Planner fits best

    Users wanting detailed free Monte Carlo planning

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Boldin 9.4/10 Visit ↗ Flexible Retirement Planner 8.8/10 Visit ↗
At a glance
Editor score 9.4 8.8
Ranking #1 in Retirement Planning Software #6 in Retirement Planning Software
Best for Households building and comparing retirement plans Users wanting detailed free Monte Carlo planning
Pricing model Free plan + paid Free
Starting price $144/yr Free plan
Free plan ✓ ✓
Free trial 14 days —
Deployment Cloud Cloud, Desktop
Platforms Web Web, Windows, macOS, Linux
Features Boldin 5/5 · Flexible Retirement Planner 5/5
Income projection ✓ ✓
Savings growth projection ✓ ✓
Withdrawal planning ✓ ✓
Social Security modeling ✓ ✓
Scenario analysis ✓ ✓
Specs
Tax modeling Detailed Detailed
Account synchronization Read_only Not checked yet
Our review
Pros
  • Models income, expenses, Social Security, taxes, and withdrawals
  • PlannerPlus adds Roth conversions, tax projections, and Monte Carlo analysis
  • Links account balances through Plaid, MX, or Finicity
  • Models 10,000 life cycles for retirement simulations
  • Includes Roth conversions, RMDs, and withdrawal-order controls
  • Runs on web, Windows, macOS, and Linux
Cons
  • PlannerPlus costs $144 per year after a 14-day free trial
  • Account linking syncs balances read-only
  • Available on web
  • Limited to personal, non-commercial or educational use
  • No verified integrations or account synchronization
  • Requires detailed year-by-year financial inputs
Our verdict

Boldin is web-based retirement planning software for individuals and households who want to build a personalized long-term plan. It projects retirement income and expenses, savings and net worth, and models Social Security, taxes,…

Read the review →

Flexible Retirement Planner models savings accumulation and retirement spending through Monte Carlo simulations, making it suited to individuals and educators who want to examine how changing financial assumptions may affect retirement…

Read the review →
  1. BoldinRetirement Planning Software 9.4Free plan · 14-day trial
  2. Flexible Retirement PlannerRetirement Planning Software 8.8Free plan

Strengths and trade-offs

  • Boldin — where it wins

    • Models income, expenses, Social Security, taxes, and withdrawals
    • PlannerPlus adds Roth conversions, tax projections, and Monte Carlo analysis
    • Links account balances through Plaid, MX, or Finicity

    Where it doesn't

    • PlannerPlus costs $144 per year after a 14-day free trial
    • Account linking syncs balances read-only
    • Available on web
  • Flexible Retirement Planner — where it wins

    • Models 10,000 life cycles for retirement simulations
    • Includes Roth conversions, RMDs, and withdrawal-order controls
    • Runs on web, Windows, macOS, and Linux

    Where it doesn't

    • Limited to personal, non-commercial or educational use
    • No verified integrations or account synchronization
    • Requires detailed year-by-year financial inputs
  • Boldin9.4/10 · Free plan · 14-day trial

    A guided retirement plan with detailed projections, plus a free tier to get started.

    Visit BoldinFull verdict →
  • Flexible Retirement Planner8.8/10 · Free plan

    A free retirement planner with detailed inputs, withdrawal controls, and 10,000 modeled life cycles.

    Visit siteFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update