Apps like Drillstring Toolbox Premium

Here are some great alternatives to Drillstring Toolbox Premium by T H Hill Associates :
Dr DE Lite - Drilling Engineer
Dr DE Lite - Drilling Engineer
★4.3
Flange Bolt Size & Torque
Flange Bolt Size & Torque
★4.6
Fabricators Handbook
Fabricators Handbook
★4.3
TracPipe CounterStrike Sizing
TracPipe CounterStrike Sizing
★3.6
Torque Calculator
Torque Calculator
★3.8
Drill and Tap Calculator
Drill and Tap Calculator
★3.3
Machine Screws Drill/Tap Info
Machine Screws Drill/Tap Info
★4.7
The Driller's Toolbox
The Driller's Toolbox
★3.7
Piping Toolbox: ASME, Fitting
Piping Toolbox: ASME, Fitting
★3.3
Quail Tools
Quail Tools
★4.8
DD Toolbox
DD Toolbox
★3.9
WARDFLEX Jobsite Assistant
WARDFLEX Jobsite Assistant
★3.8
ToolBox
ToolBox
★4.0
Sizing US/CA
Sizing US/CA
★4.6
Bosch Toolbox
Bosch Toolbox
★4.5
Pipe Schedule
Pipe Schedule
★3.4