Comparison

Position Size Calculator vs Vantage Portfolio

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

Vantage Portfolio

Features
Read full description

Vantage Portfolio is the calm, private way to follow your stocks and actually understand what's moving them. IMPORT IN SECONDS Take a screenshot of your broker app's positions and let the app read it for you: tickers, share counts and average buy price, in any layout or language. Or add positions by hand with a quick ticker search. NEWS THAT MEANS SOMETHING For every stock you hold, see the analyst price targets and forecasts that matter, each summarized to the point, colour-coded up or down, with the source article one tap away. No endless feed, just the calls with a number behind them. MARKET PULSE A daily "why did the market move" briefing covering the US and European sessions, so you start the day informed in under a minute. PRICE ALERTS Set an alert above or below any price and get a notification the moment it triggers. FOLLOW THE SMART MONEY Congress trades, large insider buys and sells, and 13D/G activist stakes, in plain language. ON YOUR WRIST An Apple Watch app and complication show your total value and today's change at a glance. BRING YOUR OWN AI, FREE The AI features run on your own AI key from the major providers, stored only on your device. Google's free tier means most people pay nothing at all, and your key never touches our servers. PRIVATE BY DESIGN No ads. No trackers. No selling your data. Your holdings are yours. Prices may be delayed. Vantage Portfolio is for information only and is not investment advice.

Screenshots

Position Size Calculator4 screens
Vantage Portfolio4 screens

Verdict

The call

The clearest difference is in-app purchases: Vantage Portfolio at none against Position Size Calculator's 5. Vantage Portfolio also leads on update cadence (every 4 days vs every 3 months). On price, ads, device support and iOS requirement 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. Vantage Portfolio asks for nothing beyond the download.

UpkeepUpdate frequency

Position Size Calculator ships an update every 3 months, Vantage Portfolio every 4 days. Both last shipped on October 28, 2026.

Scorecard2 real differences · 8 level
Position Size Calculator versus Vantage Portfolio: the parameters behind the verdict, then further details
ParameterPosition Size CalculatorVantage Portfolio
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.617.0 — better
Further details — not scored
Size6 MB4 MB
Age rating4+4+
DeveloperChristoph StadelbauerSelavi

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
None

Vantage Portfolio

No in-app purchases

Questions

Is Position Size Calculator free?
Position Size Calculator is free to download, with in-app purchases available.
Is Vantage Portfolio free?
Vantage Portfolio is free to download, with no in-app purchases.
Do Position Size Calculator or Vantage Portfolio have ads?
Neither Position Size Calculator nor Vantage Portfolio shows ads.
Which is updated more often, Position Size Calculator or Vantage Portfolio?
Position Size Calculator ships an update every 3 months, and Vantage Portfolio every 4 days. Most recently, Position Size Calculator was updated on October 28, 2026 and Vantage Portfolio on October 28, 2026.

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