Comparison

PropSize vs SizeRight

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

Head to head
About

PropSize

Features
Read full description

Position sizing for prop traders. Enter your balance, risk and stop loss to estimate a lot size. PropSize brings position sizing, configurable prop-firm loss-limit context and shareable trade cards together in one iPhone app. โ€ข Calculate forex, gold and supported index position sizes. โ€ข Use a stop distance in pips or enter entry and stop prices. โ€ข Type your own risk percentage or use quick adjustments. โ€ข Choose your firm and account type, with optional broker overrides. โ€ข Try a guided calculation before exploring subscription options. โ€ข Speak trade inputs using Apple's speech recognition, or type them. โ€ข Copy your lot size or share a trade card. Loss-limit context compares a single estimated trade risk with your configured initial account size and limit. PropSize does not connect to a trading account, track today's losses or open positions, or calculate remaining drawdown. Estimates exclude spread, fees and slippage. Currency conversions use reference rates, which may be cached. Broker contract and volume rules can vary; optional overrides are available. Subscriptions Choose a monthly or annual subscription. Eligible customers may receive the trial displayed at checkout. Apple determines eligibility. The price, trial and renewal terms are shown before confirmation. Subscriptions renew unless cancelled. Purchases and restores require an internet connection; some calculations can use cached rates. PropSize is a calculation tool, not financial advice. It does not guarantee a firm's rules are current or that a trade will avoid a breach. Privacy: https://propsize.app/privacy Terms: https://propsize.app/terms

About

SizeRight

Features
Read full description

SizeRight is a focused futures position-size calculator for active traders. Enter your account size, risk percentage, and stop distance in ticks to estimate the maximum contract count before you place a trade. Use SizeRight to: - Calculate futures position size from account size, risk %, and stop distance - See estimated contract count, dollar risk, and stop cost per contract - View stop distance in points alongside contract details - Work with free micro futures including MNQ, MES, M2K, MGC, MCL, MYM, MBT, and SIL - Unlock 20 additional full-size and specialist contracts with Pro - Use exchange-based specs for CME, CBOT, COMEX, and NYMEX markets - Keep calculations on-device with no login required Built for futures day traders, micro futures traders, funded-account traders, and anyone who wants to plan risk before entering a trade. SizeRight is a reference tool only. It does not place trades or connect to a broker. Verify current contract specifications, margin requirements, fees, slippage, and exchange rules with your broker before trading.

Screenshots

PropSize4 screens
SizeRight4 screens

Verdict

The call

The clearest difference is in-app purchases: SizeRight at none against PropSize's 2. SizeRight also leads on update cadence (every 3 weeks vs every 2 months). PropSize's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PropSize sells 2 in-app purchases, starting at $8.99 per month. SizeRight asks for nothing beyond the download.

UpkeepUpdate frequency

PropSize ships an update every 2 months, SizeRight every 3 weeks. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

Scorecard3 real differences ยท 3 level
PropSize versus SizeRight: the parameters behind the verdict, then further details
ParameterPropSizeSizeRight
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.115.1
Further details โ€” not scored
Size38 MB26 MB
Age rating4+17+
DeveloperJUSTICE UGHELIEAlexander Bacsa

In-app purchases

2 purchases

PropSize

Subscriptions2
  • PropSize Monthly3 Days trial$8.991 Month
  • PropSize Annual7 Days trial$59.991 Year
None

SizeRight

No in-app purchases

Questions

Is PropSize free?
PropSize is free to download, with in-app purchases available.
Is SizeRight free?
SizeRight is free to download, with no in-app purchases.
Do PropSize or SizeRight have ads?
SizeRight shows ads; PropSize does not.
Which is updated more often, PropSize or SizeRight?
PropSize ships an update every 2 months, and SizeRight every 3 weeks. Most recently, PropSize was updated on October 22, 2026 and SizeRight on October 17, 2026.

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