Best Stock Option Calculator Apps

207+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

Out of 207+ stock option calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Stock Option Calculator Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OptionStrat: Options ToolkitOptionStrat: Options ToolkitFree4.8★ (1.9K)NoYesSep 2026
2Easy Option CalculatorEasy Option CalculatorFree5.0★ (1)YesNoMay 2026
3thinkorswim: Trade. Invest.thinkorswim: Trade. Invest.Free4.7★ (325K)NoNoSep 2026
4Finview: Stock Screener SignalFinview: Stock Screener SignalFree4.5★ (4.4K)NoYesSep 2026
5MarketSurge - Stock ResearchMarketSurge - Stock ResearchFree4.7★ (8.6K)NoYesSep 2026
6Option Signal AlertOption Signal AlertFree4.4★ (700)NoYesSep 2026
7Unusual WhalesUnusual WhalesFree4.5★ (645)NoYesSep 2026
8Power E*TRADE-Advanced TradingPower E*TRADE-Advanced TradingFree4.5★ (13K)NoNoSep 2026

Top Picks for Stock Option Calculator

OptionStrat: Options Toolkit#1

OptionStrat: Options Toolkit by OptionStrat LLC

Calculator | Optimizer | Flow
Editor's Choice
💰 Finance
4.8😊(1.9K ratings)
FreeIn-App Purchases
#100in Finance
OptionStrat: Options Toolkit screenshot 1
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OptionStrat: Options Toolkit screenshot 3
OptionStrat: Options Toolkit screenshot 4

Visualize and analyze options trades with a profit calculator and strategy builder. Discover institutional trades with real-time unusual options flow. Optimize strategies for maximum returns or profit chance.

What We Love

  • 🚀 Visual Masterpiece
  • 🚀 Easily Navigable
  • 🚀 Comprehensive Options Lifecycle
  • 👍 Intuitive and User-Friendly
  • 👍 Great for Beginners and Experts
  • 👍 Excellent Options Modeling and Visualization
  • 👍 Helpful for Understanding Options Strategies
  • 👍 Seamless Options Optimization

Room to Improve

  • 💰 Subscription-Based Pricing
  • 🐛 Buggy and Unresponsive
  • 🐛 Login and Account Issues
  • 🐛 Restricted Functionality on Certain Devices
  • 🐛 Calculation Errors
  • 🔌 Frequent Logins Required
Easy Option Calculator#2

Easy Option Calculator by Guoli Jian

Based on Black-Scholes model
Strong Contender
💰 Finance
5.0(1 ratings)
FreeAds
Easy Option Calculator screenshot 1
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Easy Option Calculator screenshot 3

Calculate option prices and Greeks using the Black-Scholes model. Input underlying price, exercise price, days to expiration, interest rate, and volatility to get instant results. Reset values easily with a dedicated button.

thinkorswim: Trade. Invest.#3

thinkorswim: Trade. Invest. by The Charles Schwab Corporation

TD Ameritrade trading App
Worth Considering
💰 Finance
4.7😐(325K ratings)
Free
thinkorswim: Trade. Invest. screenshot 1
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thinkorswim: Trade. Invest. screenshot 3
thinkorswim: Trade. Invest. screenshot 4
thinkorswim: Trade. Invest. screenshot 5
thinkorswim: Trade. Invest. screenshot 6

Trade stocks, options, futures, and forex with a powerful mobile platform. Manage positions, analyze charts, and practice strategies with simulated trading. Get real-time data and educational resources.

What We Love

  • 🚀 Powerful trading platform
  • 📊 Excellent charting and analysis tools
  • 💻 Seamless desktop and mobile integration
  • 🤑 Great for beginners and experienced traders
  • 🗓️ Helpful paper trading feature

Room to Improve

  • 🐛 Frequent app crashes and bugs
  • 🕰️ Slow performance and lagging issues
  • 💳 High fees and commissions
  • 🔒 Security concerns with account access
  • 🇦🇺 Not available in certain regions

More Stock Option Calculator apps to explore

FAQ about Stock Option Calculator

What are the best stock option calculator apps for iPhone?
OptionStrat: Options Toolkit tops our stock option calculator apps ranking as of July 2026, with a 4.8-star average from 1.9K App Store ratings, and it's free to download.
Yes — 20 of the top stock option calculator apps we rank are free to download, including OptionStrat: Options Toolkit and Easy Option Calculator.
OptionStrat: Options Toolkit has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 207+ stock option calculator apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
OptionStrat provides tools for options traders to visualize and analyze their trades. It includes a profit calculator to understand potential profit and loss, a strategy builder to create various options strategies, and an unusual options flow tracker to identify institutional trades.
Key features include a real-time options profit calculator with strategy visualization, a strategy optimizer that finds the best trades based on targets, and an unusual options flow scanner that detects large and aggressive institutional trades, including complex strategies.