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Head-to-head · Retirement Planning Software

Boldin vs driftcurve

  • 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
driftcurve #9 in Retirement Planning Software 8.5/10 Free plan Free plan✓ 5 of 5 features Visit driftcurve

Boldin leads on 0 checks, driftcurve 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 8.5 out of 10; our editors rank them #1 and #9.

On tax modeling, Boldin gives you Detailed where driftcurve offers Basic. On account synchronization, Boldin gives you Read_only where driftcurve offers None.

Boldin is the better fit for households building and comparing retirement plans. driftcurve is the better fit for open-source users needing broad household modeling.

  • Boldin fits best

    Households building and comparing retirement plans

  • driftcurve fits best

    Open-source users needing broad household modeling

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 ↗ driftcurve 8.5/10 Visit ↗
At a glance
Editor score 9.4 8.5
Ranking #1 in Retirement Planning Software #9 in Retirement Planning Software
Best for Households building and comparing retirement plans Open-source users needing broad household modeling
Pricing model Free plan + paid Free
Starting price $144/yr Free
Free plan ✓ ✓
Free trial 14 days —
Deployment Cloud Cloud, Self-hosted
Platforms Web Web
Features Boldin 5/5 · driftcurve 5/5
Income projection ✓ ✓
Savings growth projection ✓ ✓
Withdrawal planning ✓ ✓
Social Security modeling ✓ ✓
Scenario analysis ✓ ✓
Specs
Tax modeling Detailed Basic
Account synchronization Read_only None
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 household assets, debt, pensions, and Social Security.
  • Includes Monte Carlo forecasts, spending guardrails, and scenario comparison.
  • Free under Apache License 2.0, with web, API, and self-hosted options.
Cons
  • PlannerPlus costs $144 per year after a 14-day free trial
  • Account linking syncs balances read-only
  • Available on web
  • No account synchronization; household data is user-entered.
  • Local mode stores household data in the browser and runs forecasting locally.
  • Tax modeling is basic.
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 →

Retirement planning often spans more than investment balances: households may need to account for debt, property, pensions, income, and different retirement dates. driftcurve is an open-source retirement planning engine for individuals and…

Read the review →
  1. BoldinRetirement Planning Software 9.4Free plan · 14-day trial
  2. driftcurveRetirement Planning Software 8.5Free 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

  • driftcurve — where it wins

    • Models household assets, debt, pensions, and Social Security.
    • Includes Monte Carlo forecasts, spending guardrails, and scenario comparison.
    • Free under Apache License 2.0, with web, API, and self-hosted options.

    Where it doesn't

    • No account synchronization; household data is user-entered.
    • Local mode stores household data in the browser and runs forecasting locally.
    • Tax modeling is basic.

More comparisons

All retirement planning software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update