Comparison

Voltage Drop Calculator. vs Sun

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

Head to head
About

Voltage Drop Calculator.

Calculate voltage drop and wire size using both NEC and IEC standards. Supports various load types, conductor materials, and system configurations. Generates detailed reports for electricians, engineers, and contractors.

Highlights
  • NEC and IEC dual standards
  • Voltage drop and wire sizing calculations
  • Support for continuous load and corrections
  • Copper or Aluminum conductor options
  • Single-phase and three-phase systems
  • Automatic compliance checks
  • PDF report generation
Features
Read full description

Perform accurate Voltage Drop and Wire Sizing calculations for both NEC® (National Electrical Code) and IEC standards. Built for electricians, engineers, and contractors who need reliable results on the go. Voltage Drop Calculator • Dual standards: Switch between NEC (AWG/Imperial) and IEC (mm²/Metric) • Enter voltage, current, run length, and power factor • Supports continuous load (125%), grouping, and ambient temperature corrections • Copper or Aluminum conductors for single-phase and three-phase systems • Detailed results including ampacity, derating, voltage drop, and load voltage • Automatic compliance checks (e.g., ≤ 3% for branch circuits) Wire Size Calculator (Reverse) • Calculates required wire size for a target voltage drop % • Suggests optimal AWG, kcmil, or mm² • Uses NEC Chapter 9, Table 9 (AC impedance) with DC fallback Professional Tools • Wire converter (AWG/kcmil ↔ mm²) • Generate and share PDF reports • Handy electrical formula cards • Localized in English, Spanish, French, German, Italian, Dutch, Portuguese, and Chinese

About

Sun

Features
Read full description

La herramienta para realizar cotización de películas de seguridad

Screenshots

Voltage Drop Calculator.4 screens
Sun4 screens

Verdict

The call

The clearest difference is in-app purchases: Sun at none against Voltage Drop Calculator.'s 1. Sun also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, update cadence 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

Both are free to download. Voltage Drop Calculator. sells 1 one-off in-app purchase. Sun asks for nothing beyond the download.

UpkeepUpdate frequency

Voltage Drop Calculator. ships an update every 3 months, Sun every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Voltage Drop Calculator. versus Sun: the parameters behind the verdict, then further details
ParameterVoltage Drop Calculator.Sun
PriceFreeFree
Rating4.6 (414 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings414 — better—
Update frequencyEvery 3 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size51 MB41 MB
Age rating4+4+
DeveloperV PUGAZHENTHIzona de privilegios

In-app purchases

1 purchases

Voltage Drop Calculator.

One-time1
  • Go Pro$4.99
None

Sun

No in-app purchases

Questions

Is Voltage Drop Calculator. free?
Voltage Drop Calculator. is free to download, with in-app purchases available.
Is Sun free?
Sun is free to download, with no in-app purchases.
Do Voltage Drop Calculator. or Sun have ads?
Voltage Drop Calculator. shows ads; Sun does not.
Which is updated more often, Voltage Drop Calculator. or Sun?
Voltage Drop Calculator. ships an update every 3 months, and Sun every 2 months. Most recently, Voltage Drop Calculator. was updated on October 29, 2026 and Sun on October 25, 2026.

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