Best Position Sizing Apps

0+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated June 2026

Every iPhone needs a few good position sizing apps. We benchmark 0+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Position Sizing Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Position Size Calculator: PosiPosition Size Calculator: Posi$2.995.0★ (1)NoNoAug 2026
2True PositionTrue PositionFree3.0★ (4)NoNoMay 2026
3Trade Calculator, Stock MarketTrade Calculator, Stock MarketFree3.9★ (9)NoNoMay 2026
4sqft ARsqft ARFree4.4★ (761)YesNoAug 2026
5Duomi Calc: Stock & FuturesDuomi Calc: Stock & FuturesFree4.9★ (8)YesYesAug 2026
6MeasureMeasureFree3.1★ (1.6K)NoNoAug 2026
7PenometerPenometerFree4.5★ (43)NoYesAug 2026
8G2 PerformanceG2 PerformanceFree3.9★ (7)NoNoAug 2026

Top Picks for Position Sizing

Position Size Calculator: Posi#1

Position Size Calculator: Posi by Ennio Bovyn

Stocks, ETFs, Crypto Risk
Editor's Choice
💰 Finance
5.0(1 ratings)
$2.99
Position Size Calculator: Posi screenshot 1
Position Size Calculator: Posi screenshot 2
Position Size Calculator: Posi screenshot 3
Position Size Calculator: Posi screenshot 4
Position Size Calculator: Posi screenshot 5
Position Size Calculator: Posi screenshot 6

This tool helps investors and traders precisely calculate the optimal size for their positions across various assets like stocks, ETFs, forex, and crypto. It's designed to manage risk effectively, safeguard capital, and optimize returns for both beginners and experienced users.

True Position#2

True Position by Douglas Rudd

Strong Contender
📊 Productivity
3.0(4 ratings)
Free
True Position screenshot 1
True Position screenshot 2

This app calculates the true position of holes based on engineering drawing dimensions and tolerances. It helps determine if hole positions meet required specifications, with or without Maximum Material Condition. It's a tool for manufacturing quality control.

Trade Calculator, Stock Market#3

Trade Calculator, Stock Market by Amiben Kevadiya

Position Sizing, ROI, P&L Calc
Worth Considering
💰 Finance
3.9(9 ratings)
Free
Trade Calculator, Stock Market screenshot 1
Trade Calculator, Stock Market screenshot 2
Trade Calculator, Stock Market screenshot 3
Trade Calculator, Stock Market screenshot 4
Trade Calculator, Stock Market screenshot 5
Trade Calculator, Stock Market screenshot 6

This app simplifies stock market trading with tools for calculating profit/loss, average stock cost, trade details, percentages, position size, and ROI. It offers accurate calculations and a user-friendly interface for informed investment decisions.

More Position Sizing apps to explore

4
sqft AR
sqft AR
sqft AR
AR Floor Measurement & Beyond
Free

Measure floor and wall areas, lengths, and check product sizes in real-world spaces using augmented reality. Visualize virtual furniture to gauge room dimensions and ensure product fit.

Measure floor area (ft², m²)Measure wall area (ft², m²)Measure length between points
🔧 Utilities
(761)
free with in-app purchases
5
Duomi Calc: Stock & Futures
Duomi Calc: Stock & Futures
Duomi Calc: Stock & Futures
Position Sizing & Compound
Free

This financial toolkit helps investors and traders calculate compound interest, estimate ROI, and manage risk. It offers tools for position sizing, target price finding, and P&L calculation with a clean, intuitive interface and dark mode support.

Compound Interest CalculatorP&L CalculatorTarget Price Finder
💰 Finance
(8)
free with in-app purchases
6
Measure
Measure
Measure
by Apple
Free

Transform your device into a digital tape measure. Quickly gauge the size of real-world objects, determine a person's height, and automatically get dimensions for rectangular items. Save and share your measurements easily.

Measure object lengthsAutomatic rectangular object dimensionsEstimate person's height
🔧 Utilities
(1.6K)
free
7
Penometer
Penometer
Penometer
Track & Compare Your Size
Free

Measure and track your body size metrics over time. Compare your measurements to national and global averages, and gain insights with a built-in analysis tool. Your data is kept private and secure.

Measure length, width, and girthTrack changes over time with graphsCompare size to global and national averages
💪 Health & Fitness
(43)
freemium
8
G2 Performance
G2 Performance
G2 Performance
AI sizing solution.
Free

This free application helps users find the correct garment sizes using AI. It provides accurate sizing recommendations to ensure a better fit for clothing purchases.

AI garment sizingAccurate size recommendationsFree to use
🌟 Lifestyle
(7)
free
9
Rebel FitFreedom
Rebel FitFreedom
Rebel FitFreedom
by Rebel Athletic Inc.
Free

This app uses body scans to provide size recommendations for athletic wear. Users take front and side photos following in-app instructions, which are then processed by a sizing algorithm. The app ensures privacy by not storing images, only body outlines.

Body scanning for size recommendationsFront and side pose image captureProprietary sizing algorithm
💪 Health & Fitness
(3)
free
10
Snapsize - Snap, Pick and Buy
Snapsize - Snap, Pick and Buy
Snapsize - Snap, Pick and Buy
by Snapsize Solutions Inc.
Free

This app helps you find the perfect clothing size by visually comparing your existing garments with new items. Avoid returns and shop with confidence by using its patented algorithm to virtually try on clothes before you buy.

Visual clothing comparisonVirtual wardrobeShare wardrobe with friends
🌟 Lifestyle
(1)
free
11
Zilmet Sizing
Zilmet Sizing
Zilmet Sizing
by Zilmet USA LLC
Free

This program assists with sizing expansion tanks for hydronic, thermal, and water systems. It provides detailed output including required tank volume and relevant Zilmet data sheets, brochures, and installation manuals for residential and commercial applications.

Expansion tank sizingHydronic system supportThermal system support
🔧 Utilities
(1)
free
12
Trade Size stock trading risk
Trade Size stock trading risk
Trade Size stock trading risk
Position ratio strategy calc
$3.99

This app helps traders manage risk by calculating optimal stock quantities based on capital, risk tolerance, and price points. It also allows users to assess the gain/loss ratio for their trades, promoting disciplined investing.

Calculate stock quantity based on capitalSet risk percentage per tradeInput buy and sell prices
💰 Finance
(65)
free
13
PropSize: Lot Size Calculator
PropSize: Lot Size Calculator
PropSize: Lot Size Calculator
Position sizing for prop firms
Free
💰 Finance
(0)
14
TradoX
TradoX
TradoX
Position sizing made easy
Free

This app helps traders calculate position sizes based on risk tolerance, currency, or percentage. It supports a vast array of forex pairs, cryptocurrencies, indices, and commodities, with options to request new additions. A free tutorial is available for users.

Risk calculation in units or lotsCalculate risk by percentage or currencyPosition size overview for stop loss adjustments
💰 Finance
(0)
free with in-app purchases
15
TradeR.
TradeR.
TradeR.
by Leon Schloemmer
Free

This tool simplifies and accelerates position sizing and risk management for traders. It offers live currency quotations to easily calculate position sizes with just a few clicks, integrating seamlessly into your trading workflow to optimize trades.

Position sizing simplificationRisk management accelerationLive currency quotations
💰 Finance
(8)
free
16
XpertFit
XpertFit
XpertFit
by 3DLOOK, Inc.
Free
🔧 Utilities
(0)
17
Measuring Tape : AR Ruler App
Measuring Tape : AR Ruler App
Measuring Tape : AR Ruler App
Measure height, length & rooms
Free

Transform your device into a precise measuring tool using augmented reality. Measure distances, room dimensions, and object heights with just your camera. Ideal for home improvement, DIY, and everyday tasks.

AR Ruler for object and distance measurementHeight measurement for people and objectsRoom size and area estimation
🔧 Utilities
(25)
free with in-app purchases
18
AlignSmart
AlignSmart
AlignSmart
Measure. Correct. Align.
Free

Assess your posture with objective measurements and follow personalized corrective exercises. Track your progress over time to improve alignment, reduce pain, and enhance performance. Ideal for individuals, athletes, and organizations focused on postural health and injury prevention.

Objective posture assessmentGuided corrective exercisesProgress tracking
💪 Health & Fitness
(97)
free with in-app purchases
19
My Position App
My Position App
My Position App
by Piet Jonas
$0.99

This app helps you quickly determine your current altitude and position on Earth. Define a target to see your distance and direction remaining, using a rhumb line for consistent bearing. It operates offline and conserves battery by not tracking your position in the background.

Real-time altitude and positionTarget distance and directionRhumb line navigation
🗺️ Navigation
(4)
paid
20
PostureScan: Stand Taller
PostureScan: Stand Taller
PostureScan: Stand Taller
AI Scan & Posture Exercises
Free

This app uses AI to scan your posture, identifying issues like forward head and rounded shoulders. It then provides personalized exercises and corrections to help you stand taller, improve confidence, and track your progress over time.

30-second AI posture scanPosture score and issue breakdownPersonalized exercise plan
💪 Health & Fitness
(52)
free with in-app purchases

FAQ about Position Sizing

What are the best position sizing apps for iPhone?
Position Size Calculator: Posi tops our position sizing apps ranking as of June 2026, with a 5.0-star average from 1 App Store ratings, and it's priced at $2.99.
Yes — 17 of the top position sizing apps we rank are free to download, including True Position and Trade Calculator, Stock Market.
Position Size Calculator: Posi has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
Position Size Calculator is a paid app, available for a one-time purchase of $2.99. This price grants you full access to all its features without recurring charges.
Position Size Calculator is compatible with Mac, iPhone, and iPad devices. This allows for flexible use across Apple's ecosystem.

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