Comparison

iSmith vs Electronic

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iSmith

This app helps users understand impedance matching principles. It allows for reading key network parameters from a Smith chart and calculating various matching networks and pads. Users can also convert between different power and voltage units.

Highlights
  • Read Smith chart parameters (Z, Y, VSWR, Q, Gamma)
  • Calculate 8 L-matching networks
  • Calculate T & Pi matching pads
  • Set matching targets on Smith chart
  • Learn impedance matching principles
  • dBm, Watts, and Volts conversion
  • VSWR conversion
Features
Read full description

Features: - Read out Z, Y, VSWR, Q and Gamma from smith chart. - Calculate 8 L-matching networks. - Set matching target by touching smith chart. - Calculate T & Pi matching pad. - Learn the principle of impedance matching. - dBm, Watts and Volts conversion - VSWR Conversion

About

Electronic

This comprehensive electronics reference and tool suite offers over 70 calculators, tables, and data for engineers, students, and hobbyists. It features a modern UI, iCloud sync, multi-window support, and PDF export, all accessible offline.

Highlights
  • Over 70 tools, tables, and references
  • Universal app for iPhone, iPad, and Mac
  • iCloud sync across devices
  • Multi-window support for parallel use
  • PDF export for results
  • Offline functionality
  • Modern UI with Dark Mode
Features
Read full description

Electronic Toolbox 2 – The classic, re‑imagined Since 2009, Electronic Toolbox has been one of the most comprehensive electronics references and toolboxes on the App Store—for professionals, students, makers, HAMs, and hobby engineers. With Electronic Toolbox 2, a fully modernized new edition arrives: familiar in structure, up to date technologically, and consistently evolved. # The best and most complete electronics app—now for iPhone, iPad & Mac Over 70 tools, tables, and references—from “A” like ASCII table to “Z” like Zener diode calculation: Everything you need in the lab, workshop, or lecture hall, in one place. • Universal app: One purchase—three platforms (iPhone, iPad, Mac) • iCloud sync: All settings and favorites automatically on all devices • Multi‑window support: Use multiple tools in parallel—ideal for comparisons • PDF export: Save, document, or share results • Pinned tools: Keep important tools always at hand • Interactive tools: New visualizations, e.g., in the Battery Charge tool • Modern UI with Dark Mode: Redesigned, clearly structured, and easy to read # Proven foundation, familiar workflow Electronic Toolbox 2 stays true to its heritage—all known tools are included and have been carefully revised. From calculators to reference data: nothing is missing, much is better. Examples: • Resistor color code and coil calculator • NE555 and heatsink calculation • Conversion and unit tools (HEX, AWG, frequency, and more) • Parametric component search with datasheets • Tables for batteries, drill sizes, IC pinouts, packages, and more • References for boards like Raspberry Pi, Arduino, BeagleBone, Nano Pi … • Global search across all tools • Fully usable offline • No ads, no in‑app purchases # Continuously improved—since 2009 Electronic Toolbox has been maintained and improved with passion for over a decade. With version 2, we carry this legacy forward—on a new technical foundation for the years ahead. Feedback from the community remains central: every suggestion helps make the toolbox even better. # Gentle transition The original Electronic‑Toolbox Pro remains fully usable—existing workflows are not interrupted. Existing customers can switch to the new version via a discounted bundle. Features like the Circuit Editor or Projects will initially remain exclusive to Electronic‑Toolbox Pro and are not yet included in this new edition. # From the developer Jan Roskosch built Electronic Toolbox 2 together with his father Marcus Roskosch, the developer of the original app. A modern realization of a classic—with the same passion for electronics, precision, and quality. # At a glance • Completely new, modern interface • All known tools from the original app included • Universal app for iPhone, iPad, and Mac • iCloud synchronization • PDF export & multi‑window support • Fully usable offline • No ads, no in‑app purchases ----- Electronic Toolbox 2—the future of the electronic toolbox. Continued with passion. Built for you.

Screenshots

iSmith4 screens
Electronic4 screens

Verdict

The call

The clearest difference is price: iSmith at Free against Electronic's $9.99. iSmith also leads on rating (5.0 vs 2.3) and update cadence (every 2 days vs fortnightly). Electronic's advantage is ads (none vs shown) and chart position (#169 vs unranked). On in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

iSmith is free to download; Electronic costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iSmith holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

iSmith ships an update every 2 days, Electronic fortnightly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

Scorecard8 real differences · 3 level
iSmith versus Electronic: the parameters behind the verdict, then further details
ParameteriSmithElectronic
PriceFree — better$9.99
Rating5.0 (1 ratings) — better2.3 (3 ratings)
Positive reviews—100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 2 days — betterFortnightly
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
Best chart rank—#169 — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.0 — better18.5
Further details — not scored
Size7 MB166 MB
Age rating4+4+
DeveloperRyoun Chon ShinMarcus Roskosch

Customer experience

iSmith

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Electronic

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iSmith

No in-app purchases

None

Electronic

No in-app purchases

Questions

Is iSmith free?
iSmith is free to download, with no in-app purchases.
Is Electronic free?
Electronic costs $9.99, with no in-app purchases.
Which has better reviews, iSmith or Electronic?
iSmith is rated higher. iSmith averages 5.0 out of 5 from 1 ratings, while Electronic averages 2.3 from 3 ratings.
Do iSmith or Electronic have ads?
iSmith shows ads; Electronic does not.
Which is updated more often, iSmith or Electronic?
iSmith ships an update every 2 days, and Electronic fortnightly. Most recently, iSmith was updated on November 3, 2026 and Electronic on November 8, 2026.

Other comparisons