iCalcHandy - One-handed calc

As iPhones get larger, the keys on calculator apps have also gotten larger. Many people find the keys too big and difficult to type.
If you make the keys smaller, the overall size of the keys also gets smaller, so you can move the entire keys to the right or left. If you hold the iPhone in one hand and operate the keys with your thumb, it is easier to use if the entire keys are closer to the operating hand.
In general, you hold the iPhone in one hand and operate it with the index finger of the other hand, but even in such cases, it is easier to use if the entire keys are closer to the operating hand.
"I wish I could choose the key size" "I wish the entire keys were closer to the operating hand"
iCalcHandy is a calculator app that fulfills this request.

In addition, iCalcHandy has a unique display.
"What value did I enter?" "Was the value I entered correct?" Everyone has such worries when using a calculator.
iCalcHandy displays the input value as it was entered even after calculation, so there is no such worry.

[Instructions]
• Long tap size key to change the key size.
• Long tap L/R key to change the key position to the left or right.
• To recall calculation history, tap ▼older key until you find the history you want. After you tapped ▼older key, if you want to recall a newer history, tap ▲newer key until you find it.
• To clear the calculator completely including calculation history, close iCalcHandy.
• To clear the calculator except for the set memory and the independent memory on MR-line, tap C key and then tap AC key appeared, that is, double tap C key.
• To clear the independent memory on MR-line, tap MR key and then tap MC key appeared, or swipe on MR-line.
• To completely clear the number you have just input on 1st-line or 2nd-line, tap C key.
• To erase a right end number at 1st-line or 2nd-line framed in the input mode, swipe on the line.
• To change one of input numbers after a calculation, please tap the input line display to input a new number.
• Tapping Result-line display is a convenient substitute for tapping = key.

[Features]
• You can choose the key size on the iCalcHandy. The smaller the key, the higher the center of the key is positioned, making it easier to use even with small keys.
• The keys on the iCalcHandy are not positioned in the center, but on the right or left side, making it easier to