SLD | Electrical diagrams 4+

Draw schemes easily

Angel Martinez

    • $0.99
    • Offers In-App Purchases



This tool will allow you to create your own one-line diagrams quickly and easily. Simply select the symbol you want to use and drag it to the desired position.

The most commonly used symbols are integrated (IEC, ANSI standards):

Symbols according to IEC and ANSI standards for electrical engineering:
Circuit breaker, plug-in, switch, disconnector, fuse, differential (RCD), contactor, motor, generator, socket, plug base, contact, normally open NO, closed NC, valve, level, temperature, delay and advance opening and closing, limit switch, handle, interlock, push button, mushroom, lamp, grounding, energy meter, active (kWh) wattmeter, reactive (kvar) varimeter, transformer, voltage, current, three windings, overvoltage, thermal relay, magnetic, coil, clock, minimum and maximum voltage, starter, rectifier, inverter, battery, converter, AC/DC, DC/DC, frequency meter, voltmeter, ammeter, ohmmeter, soft starter, variable resistance, reactance, diode, varistor, heater, fault, star-delta transformer, insulation, regulator, connectors, conductors, phase, neutral, ground, protection, fan, photovoltaic panel, control, load and enter text such as volt, ampere, watt, energy

# BASIC Version #
* You can create your single-line diagram with the same symbols as the Version PRO
* You can only work with a scheme although you can share it as an image, pdf or file
* Once you create a scheme you will no longer be able to open another (they are not saved)
* Contains ads

# PRO Version # (1 - In-App Purchases)
* You will be able to open, edit and save a scheme
* Open in the following examples (link)
* No ads

* Missing a symbol? Contact us through the app
* More examples:

What’s New

Version 2.9.1

* Performance improvements
* Minor fixes

Ratings and Reviews

4.1 out of 5
78 Ratings

78 Ratings

Jesse0351 ,


As an commercial hvac tech I often come across older units with unreadable or missing diagrams without searchable IOMs. It allows me to draw my own as I troubleshoot. I also use the app to design a circuit and to add to a circuit things like pump downs and lockouts. Always leaving a printed copy in the controls cabinet.

Niên12385050 ,


Please support language Vietnamess. Thanks you so much.

Developer Response ,

We would love it, if you want to help us contact us

Blackrock50 ,

Non-intuitive editing

Can’t figure out how to delete or undo anything except to start over. Program drops into unusable modes unexpectedly when attempting to do various things. Not very well tested. Pro version says it saves a file but where is it? Can’t load it or find it. Finally located file through trial and error. Some documentation sure would help.

Developer Response ,

Look at this video:

App Privacy

The developer, Angel Martinez, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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