General:
For changing a price or a setting you have to touch the editable item.
After entering the changes, TradeSize pro makes the calculations. Not all items are editable."
TradeSize pro saves some data as a preference for that input field.

The Account Size is the size of your Portfolio, which can limit the Money in Use.
If your Portfolio is not that large leave the Account Size at the default setting of 25000.
The AccountSize is stored by TradeSize as a preference.

The Maximum Risk % is a percentage of your Portfolio which you can lose several times in a row before you get uncomfortable.
Don't set this percentage to high, else it could lead to ruining your account balance.
Start experimenting with a Maximum Risk % of 1.5 to 3 percent. Default is 2 percent.
The Maximum Risk % is stored by TradeSize as a preference.

The Commission setting is self explanatory. Select the applicable Commission, set the applicable percentage or commission price.
The Commission settings are stored by TradeSize as a preference.

Set your Trade Entry Price.
The Trade Entry price is also stored by TradeSize as a preference.

The Stop Loss Price is the Price at which you must sell your positions in case the market turns against you.
In case of a long position the Stop Loss Price is Lower than the Entry Price.
In a Short position the Stop Loss Price is higher than the Entry Price. Some Text labels in TradeSize pro will change in case of a Short position.
In case of a Short position, a Short label will be added to the Trade Size label, the Money Risk label will change in Money Received.
To allow some price fluctuations, set the Stop Loss Price not to close to the Entry Price.

On the right is the TradeSize pro menu button.

When the AccountSize, Maximum Risk %, the Commission, Entry- and Stop Price have been set, TradeSize pro calculates the TradeSize that is limited by your Maximum Risk %.
You can edit the TradeSize to your desire. Tap the Trade Size, a Hold Checkbox will show. Enter your desired TradeSize, a Set at: label will show and TradeSize pro will makes new calculations. When you uncheck the SizeHold-CheckBox, TradeSize pro recalculates the maximum Trade Size automatically.

The Money Risk is what you can loose maximum in the wordt case scenario.
You can edit the Money Risk also. Tap on the amount, enter your adjusted Money Risk amount and a Set at: label and a checked Hold-checkbox will show.
TradeSize pro will calculate a new Trade Size with your manually adjusted Money Risk."

With a reasonable Money Risk, the Money in Use can still be enormous.
You can edit the Money in Use as desired, a Set at: label will be added to the Money Risk Label.
TradeSize pro will calculate a new Trade Size so your Money in Use is within your range.

Selling your positions at the Brake Even Price results in no profits nor losses.
The percentage and arrow shows the change the Entry Price to has to make, to reach the Brake Even Price.
The BEP is calculated automatically and is not editable.

The Reward / Risk Ratio is the Ratio between your Desired Profit and your taken Risk.

Set your Desired Reward / Risk Ratio, TradeSize pro calculates the Target Price. The default DesiredRRR is set to 1.
The percentage and arrow shows the change, the Entry Price to has to make, to reach the Target Selling Price.
"The DesiredRRR is editable, the Target Price is not.

Here you can enter your Realized or expected Selling Price. TradeSize pro calculates the Actual Reward / Risk Ratio and the Realized Profit or Loss.
The percentage and arrow behind the Realized Price shows the change the Entry Price has to make to reach the Realized Selling Price.
The Actual RR Ratio and the Realized Profit are not editable.

At the Bottom of the TradeSize pro app is an information field.
If TradeSize pro needs to leave you a message, it will shown here in red.