Comparison

Forex Calculator vs FX LotSize

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

Head to head
About

Forex Calculator

Features
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Here is the problem. When USDJPY was at 110.065, you went long EURUSD at 1.12236 for 110,000 yen and cut your losses at 1.12071. Q. How much will you lose when the stop loss is taken? You can calculate this instantly, right? Yes, it is 19,977 yen. I can't calculate it. However, if you don't know how much you will lose and you just place a stop-loss order, it is risky. If you don't know how much you will lose, it is risky. However, I have created something that solves all of these problems. How much will you lose? How many lots should I enter to be safe? How much you can afford to lose ↑You can find out all of these things. It's called "Risk Calculator". However, this is a boring name, so I decided to call it "PipopaPips". The name is "PipopaPips". _____ Functions Function to calculate the safe lot It is calculated from the acceptable loss amount and the acceptable loss range. If you set the stop loss of the acceptable loss range in the calculated lot, you can trade without exceeding the acceptable loss amount. Function to calculate the amount of loss The amount of loss is calculated based on the desired lot and the allowable price range. You can trade without exceeding the calculated amount of loss by setting a stop loss of the allowable loss range for the desired lot. Function to calculate the allowable loss range (stop loss) This is calculated based on the desired lot and the allowable loss amount. (It can also be calculated as a percentage of funds instead of the amount of loss.) (You can also use % of funds instead of the amount of loss.) If you set the stop loss at the calculated allowable loss range and trade with the desired lot, you can trade without exceeding the allowable loss amount. _____ Recommended for the following people! People who trade using charts in forex investment. People who use TradingView or MT4/MT5 for trade analysis. People who use TradingView or MT4/MT5 for trade analysis. People who use the Trade Note function of Trading View. People who use the trade note function of the trading view. - People who are diligent and want to manage their assets properly. People who use demo trading to simulate trades. People who know that they can control risk in Forex. People with a high awareness of risk management who have been managing their assets with stock dividends Translated with www.DeepL.com/Translator (free version)

About

FX LotSize

Features
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How to use the app Lot calculation tool You can calculate the appropriate lot when entering FX (holding a position). 1. Set the currency pair 2. Enter the margin (account balance) 3. Set the loss tolerance as a percentage of the margin 4. Finally, enter the stop loss 5. Tap the calculate button to display the appropriate lot. Profit and loss ratio tool 1. Set the profit lock pips (take profit) 2. Set the loss tolerance pips (stop loss) 3. Automatically display risk reward Settings Regarding the currency of 1 lot, please check the information of your trading company and set it. The default is set to 10,000 currency per lot. The loss tolerance (%) can be changed to the % set when the app is launched. The currency pair at launch can be changed to the currency pair set when the app is launched. The currency pair list can be listed as you like. The only currency pairs available in the free version are USD/JPY and EUR/USD/GBP/JPY. If you want to calculate lots for other currency pairs, you will need to upgrade. After upgrading, you will be able to use all currency pairs without any charge.

Screenshots

Forex Calculator2 screens
FX LotSize4 screens

Verdict

The call

The clearest difference is price: FX LotSize at Free against Forex Calculator's $5.99. FX LotSize also leads on update cadence (every 3 days vs every 2 months). Forex Calculator's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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

FX LotSize is free to download; Forex Calculator costs $5.99 up front. FX LotSize sells 1 one-off in-app purchase. Forex Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Forex Calculator ships an update every 2 months, FX LotSize every 3 days. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

Scorecard5 real differences · 1 level
Forex Calculator versus FX LotSize: the parameters behind the verdict, then further details
ParameterForex CalculatorFX LotSize
Price$5.99Free — better
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better18.0
Further details — not scored
Size25 MB8 MB
Age rating4+4+
DeveloperAdvan inc.yuki kawahito

In-app purchases

None

Forex Calculator

No in-app purchases

1 purchases

FX LotSize

One-time1
  • All Currency Pair$5.99

Questions

Is Forex Calculator free?
Forex Calculator costs $5.99, with no in-app purchases.
Is FX LotSize free?
FX LotSize is free to download, with in-app purchases available.
Do Forex Calculator or FX LotSize have ads?
Neither Forex Calculator nor FX LotSize shows ads.
Which is updated more often, Forex Calculator or FX LotSize?
Forex Calculator ships an update every 2 months, and FX LotSize every 3 days. Most recently, Forex Calculator was updated on October 8, 2026 and FX LotSize on October 5, 2026.

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