Comparison

Position Size Calculator vs Signal Sizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Position Size Calculator

This app provides quick and accurate lot size calculations for various trading instruments directly on your mobile device. It supports Forex, Metals, Commodities, Indices, and Crypto, with a customizable instrument library and support for all major account currencies.

Highlights
  • Accurate lot size calculations
  • Supports Forex, Metals, Commodities, Indices, Crypto
  • Customizable contract size, tick size, tick value
  • Built-in instrument library
  • Works with all major account currencies
  • Fast and minimal interface
Features
Read full description

Stop fumbling with web calculators while trading. Grid puts accurate lot size calculations right on your phone. Size your positions correctly in seconds. # Features • Supports Forex, Metals, Commodities, Indices, and Crypto • Customize contract size, tick size, and tick value • Built-in instrument library with broker-specific inputs • Works with all major account currencies • Fast and minimal interface designed for clarity and efficiency # Pricing Grid is premium and ad-free. A subscription is required to use the app. We offer a 7-day free trial so you can test all features. • Annual Plan - $19.99 / year • Weekly Plan - $2.99 / week • Lifetime Plan - $99.99 once Prices shown are for US customers and may vary by region. Payment charged to Apple Account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage subscriptions in Account Settings. Terms of Use: https://www.stadelbauer.dev/terms-of-use Privacy Policy: https://www.stadelbauer.dev/privacy-policy

About

Signal Sizer

Features
Read full description

Signal Sizer instantly calculates the exact position size for your forex and CFD trades — no more manual math, no more guesswork. Paste any trading signal or enter your setup manually, and Signal Sizer parses the entry, stop loss, and take-profit levels automatically. Set your risk amount and get instant, accurate lot size calculations based on live market rates. KEY FEATURES • Paste-to-calculate: drop in any signal format and get instant results • Manual entry mode for full control • Live market rates for accurate pip value conversion • Risk-based position sizing — set your dollar risk, get your lot size • Support for multiple take-profit levels, with weighted or equal split • Calculation history to track your past setups • Available in 15 languages Signal Sizer Premium unlocks unlimited calculations and unlimited live rate lookups for traders who need speed and reliability on every trade. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DISCLAIMER Signal Sizer provides mathematical estimates only. Results are not financial advice. You are solely responsible for your trading decisions.

Screenshots

Position Size Calculator4 screens
Signal Sizer4 screens

Verdict

The call

The clearest difference is update cadence: Signal Sizer at monthly against Position Size Calculator's every 3 months. Signal Sizer also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Position Size Calculator sells 5 in-app purchases, starting at $2.99 per 7 days and Signal Sizer sells 1 in-app purchase, starting at $2.49 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Position Size Calculator ships an update every 3 months, Signal Sizer monthly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Position Size Calculator versus Signal Sizer: the parameters behind the verdict, then further details
ParameterPosition Size CalculatorSignal Sizer
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size6 MB10 MB
Age rating4+4+
DeveloperChristoph StadelbauerJean Pierre Djidiack FAYE

In-app purchases

5 purchases

Position Size Calculator

Subscriptions4
  • Grid Premium$2.997 Days
  • Grid Premium3 Days trial$4.997 Days
  • Grid Premium7 Days trial$19.991 Year
Show 1 more
  • Grid Premium3 Days trial$29.991 Year
One-time1
  • Grid Premium Lifetime$89.99
1 purchases

Signal Sizer

Subscriptions1
  • Signal Sizer Premium$2.497 Days

Questions

Is Position Size Calculator free?
Position Size Calculator is free to download, with in-app purchases available.
Is Signal Sizer free?
Signal Sizer is free to download, with in-app purchases available.
Do Position Size Calculator or Signal Sizer have ads?
Neither Position Size Calculator nor Signal Sizer shows ads.
Which is updated more often, Position Size Calculator or Signal Sizer?
Position Size Calculator ships an update every 3 months, and Signal Sizer monthly. Most recently, Position Size Calculator was updated on October 30, 2026 and Signal Sizer on November 5, 2026.

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