Voltary: Electronics Toolkit
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About this app
Voltary is a fast, offline electronics toolkit for engineers, students, makers, and hobbyists. Open the app and get answers instantly — no internet, no account, no sign-up required.
Whether you're designing a circuit, debugging hardware on the bench, wiring a connector, or studying for an exam, Voltary brings the calculators, pin-outs, and references you reach for every day into one clean, fast app.
⚡ 40+ CALCULATORS & CONVERTERS
Solve it in seconds with live, formula-backed tools:
• Ohm's Law, power & power factor
• Voltage divider and LED series resistor
• Resistor colour code (3/4/5/6-band) + SMD codes
• Capacitor charge/discharge, RC/RL/LC filters
• Reactance, impedance & resonance
• 555 timer (astable / monostable)
• Op-amp and voltage regulators (linear & adjustable)
• Inductor design, Y-Δ transform, RTD/PT100, decibels, number bases, and more
Every calculator shows the formula and updates as you type.
🔌 39 CONNECTOR PIN-OUTS
Real, accurate connector diagrams you can tap to zoom and pan, with pin names, numbers and functions:
USB-A/B/C, HDMI, DisplayPort, VGA, DVI, DB9, RJ-45 / PoE, Raspberry Pi GPIO (40-pin), Arduino, SATA, microSD / SIM, XLR, MIDI / DIN, TRS, RCA, OBD-II, JTAG, GPIB / IEEE-488, PCI / PCIe, BeagleBone, and many more.
📚 REFERENCE LIBRARY
The tables you always end up searching for — bundled offline:
• Resistor & capacitor standard values (E-series)
• AWG wire gauge & current ratings
• Logic level thresholds (TTL / CMOS)
• Decibel (dB) reference, IP code, ASCII
• SMD package sizes, fuse types, battery chemistries, and more
✏️ SCHEMATIC SKETCHPAD
Sketch quick circuit ideas right on your phone — drop components, wires and notes for a fast hand-drawn schematic.
WHY VOLTARY
• Works 100% offline — no connection needed
• No account or sign-up
• Fast, lightweight, clean dark interface
• Available in 14 languages
• Built for real bench work, classrooms and field repairs
From your first breadboard to professional EE work, Voltary keeps the whole electronics bench in your pocket — online or off.
Whether you're designing a circuit, debugging hardware on the bench, wiring a connector, or studying for an exam, Voltary brings the calculators, pin-outs, and references you reach for every day into one clean, fast app.
⚡ 40+ CALCULATORS & CONVERTERS
Solve it in seconds with live, formula-backed tools:
• Ohm's Law, power & power factor
• Voltage divider and LED series resistor
• Resistor colour code (3/4/5/6-band) + SMD codes
• Capacitor charge/discharge, RC/RL/LC filters
• Reactance, impedance & resonance
• 555 timer (astable / monostable)
• Op-amp and voltage regulators (linear & adjustable)
• Inductor design, Y-Δ transform, RTD/PT100, decibels, number bases, and more
Every calculator shows the formula and updates as you type.
🔌 39 CONNECTOR PIN-OUTS
Real, accurate connector diagrams you can tap to zoom and pan, with pin names, numbers and functions:
USB-A/B/C, HDMI, DisplayPort, VGA, DVI, DB9, RJ-45 / PoE, Raspberry Pi GPIO (40-pin), Arduino, SATA, microSD / SIM, XLR, MIDI / DIN, TRS, RCA, OBD-II, JTAG, GPIB / IEEE-488, PCI / PCIe, BeagleBone, and many more.
📚 REFERENCE LIBRARY
The tables you always end up searching for — bundled offline:
• Resistor & capacitor standard values (E-series)
• AWG wire gauge & current ratings
• Logic level thresholds (TTL / CMOS)
• Decibel (dB) reference, IP code, ASCII
• SMD package sizes, fuse types, battery chemistries, and more
✏️ SCHEMATIC SKETCHPAD
Sketch quick circuit ideas right on your phone — drop components, wires and notes for a fast hand-drawn schematic.
WHY VOLTARY
• Works 100% offline — no connection needed
• No account or sign-up
• Fast, lightweight, clean dark interface
• Available in 14 languages
• Built for real bench work, classrooms and field repairs
From your first breadboard to professional EE work, Voltary keeps the whole electronics bench in your pocket — online or off.
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
New look, same offline toolkit:
• Bolder design with Liquid Glass navigation
• Refreshed Home, Search and Settings
• Improved accessibility and contrast
• Performance improvements and fixes
• Bolder design with Liquid Glass navigation
• Refreshed Home, Search and Settings
• Improved accessibility and contrast
• Performance improvements and fixes
Everyone
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About the developer
HASANAIN ABDULLAH MOHSIN ALHAMEDI
hasanain.alhamedi@gmail.com
Iraq