A mechanical workshop in your pocket
Open the machine as in a training workshop: tap any part to learn its name and job, run it with real numbers, cut it open to see inside, take it apart in maintenance order, then test yourself and earn a certificate.
The workshops
Five machines found in every building and plant, each in five stages.
PumpsFree
Centrifugal pump
Impeller, volute and seal, the pump curve and cavitation
ValvesPro
Valve bench
Gate, ball, globe, check and butterfly valves, and water hammer
Air conditioningPro
Split air conditioner
Compressor, condenser, evaporator and expansion valve: the whole refrigeration cycle
EnginesPro
Four-stroke engine
Piston, crank, camshaft and valves through the four strokes
ElevatorsPro
Traction elevator
Traction machine, ropes and counterweight, the governor and safety gear
Learn as in the workshop
No still pictures, no video to sit through: you run the machine and take it apart.
Identify
Tap any part of the model to see its name in English and Arabic, its job and its material. Or take a guided tour.
Run
Change the speed, the valve opening and the load, and watch flow, pressure, power, efficiency and the machine’s curve respond.
Cut
A section through the casing or an x-ray of the inside: the impeller, the piston, the valves and the fluid as it moves.
Take apart
Strip the machine part by part in the right maintenance order, then build it back; the app tells you when the order is wrong.
Diagnose faults
A real fault with its symptoms and what to check: choose the cause, then read how it is fixed.
Test yourself
Thirty questions per workshop, some answered by tapping the part on the model.
Certificate
Pass the test and get a PDF certificate with your name, your score and a check code.
For the world
English and Arabic, metric or imperial units, and it works offline.
Five stages in every workshop
From the first tap to the certificate, in the order a technician learns in a training workshop.
Plans
Start free with a whole workshop. Prices are in US dollars; Google Play shows them in your currency.
Questions
Who is it for?
Engineering and technical-college students, new maintenance technicians, and anyone who wants to understand how the machines around them work.
Does it replace hands-on training?
No. It prepares you before the workshop and lets you practise after it. Working on a real machine needs supervised training, the manufacturer’s manual and the site’s safety rules: isolate and lock out the power before any maintenance.
Is the certificate accredited?
It is a certificate of completion from the app, with a check code, showing you passed the workshop’s test. It is not a professional qualification or an official certificate.
Where is my progress kept?
Only on your phone. The app has no account and no server of ours, and works offline.
Are new workshops coming?
Yes: the reciprocating pump, compressor types, the diesel engine and the hydraulic elevator, then welding and non-destructive testing. Pro owners get them as they arrive, with no new payment.
How do I restore Pro on a new phone?
In the app, open “Plans” and tap “Restore purchases” with the Google account you bought it with.



