Best Solo 401K Calculator Apps

215+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated July 2026

With an average user rating of 4.7★, the solo 401k calculator category is one of the App Store's strongest. Browse all 215+ apps we track, sorted so the most loved ones surface first.

Compare top Solo 401K Calculator Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Solo 401k CalculatorSolo 401k CalculatorFreeNoJul 2026
210bii Financial Calculator10bii Financial Calculator$5.99 was $7.994.7★ (662)NoYesAug 2026
3Capital Group PlanPremier401kCapital Group PlanPremier401kFree4.8★ (11K)NoNoAug 2026
4PensionBee: Roll over 401(k)sPensionBee: Roll over 401(k)sFree4.7★ (11)YesNoAug 2026
5CompounderCompounderFree4.8★ (3.4K)NoNoAug 2026
6BA Financial CalculatorBA Financial CalculatorFree4.8★ (3.3K)YesNoAug 2026
7Compound Interest CalcCompound Interest CalcFree4.8★ (6.5K)YesYesAug 2026
8John Hancock RetirementJohn Hancock RetirementFree4.7★ (36K)NoNoAug 2026

Top Picks for Solo 401K Calculator

10bii Financial Calculator#2

10bii Financial Calculator by K2 Cashflow, Inc.

Easy Financial Calculator
Strong Contender
💰 Finance
4.7😊(662 ratings)
$5.99In-App Purchases
#1in Finance
10bii Financial Calculator screenshot 1
10bii Financial Calculator screenshot 2
10bii Financial Calculator screenshot 3
10bii Financial Calculator screenshot 4
10bii Financial Calculator screenshot 5

This app offers a comprehensive financial calculator with over 105 functions for business, statistics, and general math. It simplifies complex calculations like loan payments, time value of money, and investment analysis with an intuitive interface and visual tools. Easy modes are available for users new to financial calculations.

What We Love

  • 🚀 Powerful financial calculations
  • 👍 Intuitive interface
  • 🚀 Convenient mobile access
  • 👍 Helpful tutorials and instructions

Room to Improve

  • 🐛 Occasional crashes or bugs
  • 👎 Unintuitive UI for some users
  • 👎 Inaccurate date calculations
Capital Group PlanPremier401k#3

Capital Group PlanPremier401k by Empower Retirement, LLC

Manage your 401k
Worth Considering
💰 Finance
4.8😞(11K ratings)
Free
Capital Group PlanPremier401k screenshot 1
Capital Group PlanPremier401k screenshot 2
Capital Group PlanPremier401k screenshot 3
Capital Group PlanPremier401k screenshot 4
Capital Group PlanPremier401k screenshot 5

Manage your employer-sponsored retirement plan, view account details like income estimates and rates of return, and make changes to contributions, investments, and beneficiaries. Access plan forms and upload documents for account updates.

What We Love

  • 👍 User friendly
  • 🚀 Easy to make changes
  • 💡 Allows to review investments and make changes

Room to Improve

  • 🐛 Glitchy, freezes up
  • 🐛 Keeps crashing
  • 🐛 Login doesn't work

More Solo 401K Calculator apps to explore

4
PensionBee: Roll over 401(k)s
PensionBee: Roll over 401(k)s
PensionBee: Roll over 401(k)s
Roll over your old 401(k)s
Free

Consolidate your old 401(k)s and IRAs into one easy-to-manage retirement account. Choose your IRA type, access your savings 24/7, and receive personalized support from dedicated account managers. Plan confidently for your future with flexible investment options and transparent fees.

Consolidate 401(k)s and IRAsChoose Traditional, Roth, or SEP IRA1% rollover match available
💰 Finance
(11)
ad-supported
5
Compounder
Compounder
Compounder
Interest Calculator
Free

Calculate the growth of savings and investments using compound interest. Explore how regular contributions and withdrawals impact your financial goals over time. Designed for anyone to understand and utilize the power of compounding for wealth building.

Calculate compound interestFlexible settingsFactor in periodic withdrawals
💰 Finance
(3.4K)
free
6
BA Financial Calculator
BA Financial Calculator
BA Financial Calculator
BAII Plus Emulator
Free

Emulates the TI BAII Plus financial calculator, offering identical functionality with a clean and user-friendly interface. It's designed for finance professionals and students preparing for exams like CFA, FRM, and CPA.

TI BAII Plus emulatorIdentical functionalityUser-friendly interface
💰 Finance
(3.3K)
ad-supported
7
Compound Interest Calc
Compound Interest Calc
Compound Interest Calc
Plan | Invest | Retire
Free

Plan your financial future with a powerful compound interest calculator. It helps you visualize investment growth with periodic contributions and plan retirement withdrawals with inflation adjustments. Offers detailed breakdowns and interactive charts for informed financial decisions.

Calculate investment growth with contributionsPlan retirement withdrawals with inflationInteractive growth and depletion charts
💰 Finance
(6.5K)
free with in-app purchases
8
John Hancock Retirement
John Hancock Retirement
John Hancock Retirement
by John Hancock
Free

Manage your retirement plan securely and conveniently on the go. Access account details, make changes, and set financial goals with real-time projections. Utilize educational resources for personal finance and wellness.

Manage retirement plan accountView account balance and historyUpdate contribution rates
💰 Finance
(36K)
free
9
Principal®
Principal®
Principal®
Retire on your terms.
Free

Manage your retirement savings and financial goals from your mobile device. Track account balances, adjust contributions, and access educational resources to improve your financial confidence. Tools are available to help you assess your progress towards retirement.

View account balancesRoll over fundsChange contributions
💰 Finance
(232K)
free with in-app purchases
10
Guideline
Guideline
Guideline
Access your 401(k) anytime
Free

Easily set up and manage your 401(k) retirement account directly from your phone. Track progress, adjust contributions, and consolidate savings from other accounts. Invest with confidence through guided portfolio selection and automatic rebalancing.

Set up 401(k) in minutesAccess and manage contributionsInvest in recommended portfolios
💰 Finance
(1.8K)
free with in-app purchases
11
Capital Group RKDirect 401k
Capital Group RKDirect 401k
Capital Group RKDirect 401k
Manage your 401k
Free

Manage your employer-sponsored retirement plan on the go. View account details like balances, rates of return, and transaction history. Make changes to your investments, contribution allocations, and personal information as permitted by your plan.

View account balancesCheck personal rate of returnReview transaction history
💰 Finance
(11K)
free
12
Paycheck Calculator US - Pay44
Paycheck Calculator US - Pay44
Paycheck Calculator US - Pay44
Take Home Pay & Tax Estimator
Free

Calculate your take-home pay instantly by entering your salary or hourly wage, W-4 status, and deductions. This app provides accurate gross-to-net breakdowns, including federal and state taxes, Social Security, and Medicare. Plan your budget with your real numbers and compare different job offers.

Hourly and salary income modesFederal and state tax calculationPre-tax and post-tax deductions
💰 Finance
(13K)
free with in-app purchases
13
401GO
401GO
401GO
401k plan management
Free

Manage your 401(k) retirement savings with ease. Track your balance, adjust investments, and generate savings projections. Get personalized recommendations and update beneficiaries securely.

View account balance and gains/lossesReview and adjust investment allocationsGenerate savings projections
💰 Finance
(16)
free
14
READYSAVE™
READYSAVE™
READYSAVE™
by Ascensus
Free

Manage your retirement savings with secure login, account balance checks, and investment tracking. Get personalized guidance to adjust your savings rate and build confidence for your future.

Secure login (Face ID, Touch ID, passcode)View account balances and transaction historyTrack investments and rate of return
💰 Finance
(6.7K)
free
15
NetBenefits
NetBenefits
NetBenefits
Fidelity workplace benefits
Free

Manage your Fidelity workplace benefits, including retirement savings, stock options, health insurance, and HSAs. Track account balances, investments, and expenses. Plan for your future with personalized tools and educational resources.

Manage retirement savingsAccess stock optionsView health insurance details
💰 Finance
(29K)
free
16
Voya
Voya
Voya
by Voya Services Company
Free

Manage your entire financial life from one secure app. Track retirement, health savings, and investment accounts, alongside external banking and credit card information. Receive personalized guidance and access interactive tools to help you achieve your financial goals.

All-in-one account aggregationPersonalized financial guidanceRetirement income modeling
💰 Finance
(188K)
free
17
Compound Interest Calculator F
Compound Interest Calculator F
Compound Interest Calculator F
Retirement FIRE Calculator
Free

Calculate and plan your investments to achieve financial independence and early retirement. Understand the power of earning interest on your interest with detailed projections and visualizations. Start snowballing your money today for a wealthier future.

Calculate future investment valueMultiple contribution frequenciesGraph and table visualizations
💰 Finance
(110)
ad-supported
18
Vanguard: Save, Invest, Retire
Vanguard: Save, Invest, Retire
Vanguard: Save, Invest, Retire
Investing, Advice, Retirement
Free

Manage your investments and retirement accounts on the go. Track account performance, make trades, and deposit checks directly. Access account overviews and transaction history with ease.

Account overview and balance trackingInvestment performance trackingCost basis and day change details
💰 Finance
(177K)
free
19
Calculator Plus #1
Calculator Plus #1
Calculator Plus #1
Basic Calculator with History
Free

A straightforward calculator app designed for everyday math, school, budgeting, and shopping. It offers essential functions, a clear interface with large buttons, and a history log for reviewing past calculations. Advanced features include memory functions, percentage calculations, and multi-window support for efficient workflow.

Basic arithmetic operationsCalculation historyMemory function
🔧 Utilities
(5K)
free with in-app purchases
20
EZ Financial Calculators
EZ Financial Calculators
EZ Financial Calculators
by Bishinew Incorporated
Free

Access a comprehensive suite of financial tools for personal and business use. Calculate loans, mortgages, investments, retirement savings, and more with ease. This app offers a wide range of specialized calculators for detailed financial analysis.

Finance and Investment CalculatorsLoan and Mortgage CalculatorsRetirement Planning Tools
💰 Finance
(51)
ad-supported

FAQ about Solo 401K Calculator

Are there free solo 401k calculator apps for iPhone?
Yes — 19 of the top solo 401k calculator apps we rank are free to download, including Solo 401k Calculator and Capital Group PlanPremier401k.
Solo 401k Calculator has no in-app purchases, according to its App Store listing as of July 2026.
We track 215+ solo 401k calculator apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.