Voltbook: Electric Circuit

NEC tables for electricians

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Field calculators and code-aware reference tables for electricians. Every answer shows its formula, works offline, and exports with the edition stamped on it. Voltbook is a voltage drop calculator and circuit calculator that puts trustworthy electrical answers in your pocket, right where the work happens. Every result shows the formula and the assumptions behind it, so you can check the math instead of guessing. Alongside the calculators, Voltbook bundles an NEC code book of reference tables for electricians so a code-edition-aware reference is always one tap away, whether you're sizing conductors or checking box fill. - Voltage drop, ampacity, conduit fill, box fill, and breaker sizing in seconds - NEC reference tables that follow the code edition you pick, so answers match your inspector - Share or export any result with the formula, inputs, and edition stamped on it - Works fully offline, in the basement or on the roof Voltbook is a calculation aid for licensed professionals. Always verify results against the current adopted code in your area. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

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Information

Seller
Andrii Bashta
Size
22.4 MB
Category
Utilities
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • iPad
    Requires iPadOS 26.0 or later.
  • Mac
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Andrii Bashta
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