PeterJohn Book Keeping Calc

PeterJohn Book Keeping Calc

Business Calculator No Ads

0 ratings
$2.99

Rating summary

Details

Released
April 17, 2026
Updated
October 14, 2026

Features

PeterJohn Book Keeping Calc screenshot #1 for iPhone
PeterJohn Book Keeping Calc screenshot #2 for iPhone
PeterJohn Book Keeping Calc screenshot #3 for iPhone
PeterJohn Book Keeping Calc screenshot #4 for iPhone
PeterJohn Book Keeping Calc screenshot #5 for iPhone
PeterJohn Book Keeping Calc screenshot #6 for iPhone
PeterJohn Book Keeping Calc screenshot #7 for iPhone
PeterJohn Book Keeping Calc screenshot #8 for iPhone
PeterJohn Book Keeping Calc screenshot #9 for iPhone
PeterJohn Book Keeping Calc screenshot #10 for iPhone
🖼️Get Icon
Icons↘︎

About

****PeterJohn BookKeeping Calculator; We Wanted Simple and Easy Calculator for BookKeeping. **We Needed Independent Memory, Grand Total Memory. **We Wanted AC, C, BackSpace, some of calculators doesNot have "C"(Clear Key), or some of calculators doesNot have "BackSpace" key. **We Wanted Not "MRC" But "MR" and "MC". some of calculators doesNot have the separated "MR" and "MC". "MRC" makes us confused, when we want "MR", if there's Only "MRC", we might Ms-touch "MC", when we want "MC", if there's Only "MRC", we might Mis-touch "MR". when we want "MR", just we want Not "MRC" but "MR". when we want "MC", just we want Not "MRC" but "MC". ****Basic Functions; We determined that we regard "CASIO ND-26S Professional Business Calculator", its keyboard layout and basic function as being the industry standard calculator 'cause it is Recommended by the "Japan Calculator Skills Certification Association" and by some of BookKeeping School. We implemented some of functions below; 01) Independent Memory Calculation(M+,M-,MR,MC); 2x3,M+→6 5x6,M+→30 8x9,M+→72 MR→108 MC 02) GrandTotal Memory Calculation(=,GT); 2x3,=→6 5x6,=→30 8x9,=→72 GT→108 03) Constant Calculation(++,--,xx,÷÷) AC 3++ 4=→7 5=→8 6=→9 AC 3-- 4=→1 5=→2 6=→3 AC 3xx 4=→12 5=→15 6=→18 AC 3÷÷ 4=→1.333 5=→1.666 6=→2 AC 04) Square Calculation(x=) 3x=→9 6x=→36 9x=→81 GT→126 05) SquareRoot Calculation(√) 4√→2 5√→2.236 06) Percent Calculation(%) 456%→4.56 07) Tax Rate Set and Tax Calculation; (TaxRateSet) AC,%,10,%→10 (TaxRate) AC,TAX+→10 AC,1000,TAX+→1,100 AC,1100,TAX-→1,000 "PeterJohn BookKeeping Calculator" is Created Using "PeterJohn" technology. So that you can use "Divide Water Keyboard" in LandScape mode. ****Warning About "Screen Rotation When Device Rotated" Settings; There are Only Three Options in "Settings"; 1) AutoRotation When Portrait Orientation is "UnLocked". If you use this app when Portrait Orientation is "UnLocked", you had better choose "1) AutoRotation". 2) LandScape When Portrait Orientation is "Locked". 3) PortRait When Portrait Orientation is "Locked". if you'd like to Fix "2) LandScape" or "3) PortRait", you had better "Portrait Orientation Lock". We don't recommend the Other Option; Choosing 2) LandScape or 3) PortRait When Portrait Orientation is "UnLocked".. Best Regards, --Yasushi Yassun Obata
Show more

What's New in PeterJohn Book Keeping Calc

2026.1014.0059

October 14, 2026

AutoDeviceRotation App CRASH Problem Solved Version; we Changed Three of things below at this time. 1of3) AutoDeviceRotation App CRASH Problem Solved;; For many years, we have Suffered the AutoDeviceRotation App CRASH Problem. It was Due to that Python interpreter in RunScriptView was disMantled Suddenly after Auto Device Rotation, and that PyThreadState_Get() returns NULL Suddenly. So that the App CRASHes Suddenly. To Solve this problem, we Gave Up the Auto Device Rotation. User Needs to Change to LandScape mode or to PortRait mode Explicitly. ・How to Change to LandScape; If you'd like to Use in LandScape Mode, First Touch the SettingIcon at RunScriptView, Choose "LandScapeRight When PortRait Orientation Locked" as "Device Rotation" at "Setting" App, then Back to RunScriptView from the "PeterJohn" at the TopLeft of "Setting" App, then Touch 'Edit Script' and 'Run Script' Again. ・How to Change to PortRait; If you'd like to Use in PortRait Mode, First Touch the SettingIcon at RunScriptView, Choose "PortRait When PortRait Orientation Locked" as "Device Rotation" at "Setting" App, then Back to RunScriptView from the "PeterJohn" at the TopLeft of "Setting" App, then Touch 'Edit Script' and 'Run Script' Again. 2of3) tk.getSysLabelText(sysLabelName) method Added; After Setting was Changed using "Setting" App, in order to receive the "Application Will Enter Foreground" event as a Python String, we Added the tk.getSysLabelText(sysLabelName) method to the Module pjTkInter. if we Took Note about this and Released this information to the Users at this time, it might be Useful for the future use. and One More Thing, 3of3) Clock and Battery indicator at the top of RunScriptView on LandScape Mode;; we Added the Clock and Battery indicator at the top of RunScriptView on LandScape Mode, so that you Can Read the Holy Scripture while checking the Clock and the Battery indicator even on LandScape Mode. ****we Passwed Through "Week27 Day5" Together in 365 days;; Even if we have Walked in the Death Valley of the Last Satanist country, Like our God Delivered the Friends of Daniel from the Fiery Furnace in the Book of Daniel, we Can Go Advance little bye little 'cause our God of Glory is the Strongest and Faithful to Keep Promise. 3:16 Shadrach, Meshach, and Abednego answered and said to the king, “O Nebuchadnezzar, we have no need to answer you in this matter. 3:17 If this be so, our God whom we serve is able to deliver us from the burning fiery furnace, and he will deliver us out of your hand, O king. 3:18 But if not, be it known to you, O king, t hat we will not serve your gods or worship the golden image that you have set up.” Best Regards, --Yasushi Yassun Obata

More

Developer apps