The Finance Base / Retirement planning tools / SquirrelPlan
squirrelplan.app
SquirrelPlan
SquirrelPlan is a free, open-source planner for projecting financial futures. Enter assets, liabilities, income and expenses, then set return, interest and increase rates. It models savings allocation, retirement timing and withdrawals through standard or Monte Carlo projections. Charts and tables…
Visit squirrelplan.app ↗ What it costs
- 7.6 No. 9on Retirement planning tools
- Free planprice, as published
- Oct 9, 2026read on
What SquirrelPlan costs
- Free and open source Free
The free plan has no price, and no usage limits are stated.
As squirrelplan.app publishes them, read Oct 9, 2026. Fees, tax and exchange rates can differ when you pay; check the provider's own page first.
Its statement
- Free plan
- Yes
- Free trial
- Not stated
- Runs on
- iPhone Android Web
- Facts on record
- 25
Strengths and limits
Strengths
- Free and open source with no stated usage limits
- Models assets, debts, income, expenses and savings allocation
- Includes standard and Monte Carlo projections
- JSON import and export, with browser-local storage
- Can run as a self-hosted static web app
Limits
- No tax modeling
- No account synchronization
- No listed iPhone or Android app
- Country, currency and input limits are not published
- Results depend on entered assumptions
What it does
SquirrelPlan lets users model a financial future from assets, liabilities, monthly income and monthly expenses. Rates can be added for returns, interest or annual increases.
You can assign surplus savings to asset classes, use different allocation strategies for different life periods, and enter retirement ages, pension income and an optional withdrawal rate.
A standard projection or a Monte Carlo run with randomized annual asset returns produces charts and tables showing wealth over time.
Fees and plans
SquirrelPlan is free and open source. The facts state no price or usage limits for the free plan.
Where it runs
SquirrelPlan is listed for web use and self-hosting. The project is a static, client-side web application that can run by opening index.html in a modern browser, with no dependencies or build process to install.
No iPhone or Android app is listed in the facts. The application supports JSON import and export, and stores plans in browser local storage.
Protection as published
The site says user data is never stored or shared. Its project README says financial plans remain in browser local storage and that there is no backend server component.
The README describes the application as open source and client-side. The facts do not state a financial license, regulator, deposit protection, two-factor sign-in or dispute process.
Strengths
It combines income, spending, assets, liabilities, savings allocation and retirement inputs in one projection.
Monte Carlo runs add randomized annual asset returns to the standard projection, with results shown in both charts and tables.
Self-hosting, local browser storage and JSON portability give users control over where plans are kept.
Catches
There is no tax modeling and no account synchronization. Users must enter and update financial figures themselves.
The facts do not state supported countries, currencies, minimums, maximums or other input limits. Check how the planner handles the assumptions you need.
Who should skip it
SquirrelPlan may not fit readers seeking tax calculations, linked account balances or a listed mobile app.
Verdict
SquirrelPlan suits someone who wants a no-cost, open-source way to enter personal assumptions and compare long-term outcomes, including retirement and withdrawal scenarios. Its local-storage design and JSON files support a self-contained workflow.
It is less suitable for people who need tax treatment, automatic account data or clearly published country, currency and input-limit details. Its results depend on the values and return assumptions entered by the user.
Who it suits
Pick it if
- People building manual retirement and savings scenarios
- Users who prefer local browser storage and self-hosting
- Anyone wanting free, open-source projections
Skip it if
- You need tax calculations or linked account balances
- You require a native phone app
- You need published country, currency or input-limit details
Facts we read
- Browser storageThe project README says financial plans are stored in browser local storage and that the application has no backend server component. · github.com, Oct 9, 2026
- Data portabilityUsers can import or export their data as a JSON file. · squirrelplan.app, Oct 8, 2026
- DeploymentThe project is a static web application that can be run by opening index.html in a modern browser, with no build process or dependencies to install. · github.com, Oct 9, 2026
- Financial inputsUsers can model assets, liabilities, monthly income, and monthly expenses, including rates of return, interest, and annual increases. · squirrelplan.app, Oct 9, 2026
- Import and exportUsers can import or export their data as a JSON file. · squirrelplan.app, Oct 9, 2026
- IntegrationsThe README lists Bootstrap, Chart.js, and Sortable.js among the libraries used by the application. · github.com, Oct 8, 2026
- LanguagesThe project README lists multi-language support. · github.com, Oct 8, 2026
- LibrariesThe project README says the interface uses Bootstrap, charts use Chart.js, and sortable lists use Sortable.js. · github.com, Oct 9, 2026
- Open sourceThe project README describes SquirrelPlan as a client-side, single-page web application and links the source code on GitHub. · github.com, Oct 8, 2026
- Preset examplesThe README says sample financial data includes profiles such as Recent Graduate and Mid Career. · github.com, Oct 8, 2026
- PresetsThe site lists preset plans for Recent Graduate, Early Career, Mid Career, and Late Career. · squirrelplan.app, Oct 9, 2026
- PrivacyThe site states that user data is never stored or shared. · squirrelplan.app, Oct 9, 2026
- ResultsResults show wealth evolution over time in a chart and a table. · squirrelplan.app, Oct 9, 2026
- Retirement planningThe planner accepts current age, legal retirement age, and estimated net monthly pension, and supports early retirement and withdrawal rate settings. · squirrelplan.app, Oct 9, 2026
On these lists
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Questions
Is SquirrelPlan free?
Yes. It is described as free and open source, with no stated usage limits.
Where does SquirrelPlan run?
It runs on the web or as a self-hosted static app. The README says you can open index.html in a modern browser without installing dependencies.
Does SquirrelPlan have an iPhone or Android app?
No iPhone or Android app is listed in the facts. The listed platforms are web and self-hosted.
What can I enter into SquirrelPlan?
You can enter assets, liabilities, monthly income and expenses, plus rates for returns, interest or annual increases. Retirement inputs include ages, pension income and an optional withdrawal rate.
Does it include Monte Carlo analysis?
Yes. An optional Monte Carlo simulation runs hundreds of projections using randomized annual asset returns. A standard projection is also available.
Where are my plans stored?
The site says data is never stored or shared. The README says plans stay in browser local storage and that there is no backend server component.
Can I move my SquirrelPlan data?
Yes. The facts say users can import or export their data as a JSON file.
Does SquirrelPlan model taxes or sync accounts?
No tax modeling and no account synchronization are listed in the facts.
Is SquirrelPlan yours?
Claim it for free to correct a fact, and see the places you can buy on The Finance Base.