Comparison

SJ Resistor Calculator vs First Due Unify

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

Head to head
About

SJ Resistor Calculator

This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.

Highlights
  • Resistor color code decoding (4, 5, 6 band)
  • Series resistor calculations
  • Parallel resistor calculations
  • Accurate resistance and tolerance values
  • User-friendly interface
Features
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############################# # SJ RESISTOR CALCULATOR # ############################# Never misread your electronic components again! SJ Resistor Calculator is the essential tool for professionals, students, and electronics enthusiasts. No more color code errors or tedious calculations for your circuits! +----------------------------------------+ | WHY CHOOSE THIS APP | +----------------------------------------+ [ INTUITIVE DECODING ] - Instantly read 4, 5, or 6-band resistors. - Get the exact value and tolerance effortlessly. [ SERIES CALCULATIONS ] - Calculate the equivalent resistance of your series circuits. - Add as many components as you need. [ PARALLEL CALCULATIONS ] - Easily analyze the behavior of your parallel circuits. - Absolute precision for your electrical designs. [ PROFESSIONAL RELIABILITY ] - A clean, ergonomic, and straightforward interface. - Designed for maintenance, studies, and troubleshooting. Free and available in your language, download it today!

About

First Due Unify

Features
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Maximize your Unify 2026 experience with the official event app. Build your schedule, save favorite sessions, and stay up to date with event announcements and real-time updates.

Screenshots

SJ Resistor Calculator4 screens
First Due Unify3 screens

Verdict

The call

The clearest difference is in-app purchases: First Due Unify at none against SJ Resistor Calculator's 5. First Due Unify also leads on ads (none vs shown). On price, device support and iOS requirement 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. SJ Resistor Calculator sells 5 one-off in-app purchases. First Due Unify asks for nothing beyond the download.

Scorecard2 real differences · 7 level
SJ Resistor Calculator versus First Due Unify: the parameters behind the verdict, then further details
ParameterSJ Resistor CalculatorFirst Due Unify
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeks—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.5 — better
Further details — not scored
Size4 MB118 MB
Age rating4+4+
DeveloperStephane JAILLIARDLocality Media, Inc.

In-app purchases

5 purchases

SJ Resistor Calculator

One-time5
  • A coffee$0.99
  • A cookie$2.99
  • No ads$4.99
Show 2 more
  • A lemon tart$4.99
  • A pizza$9.99
None

First Due Unify

No in-app purchases

Questions

Is SJ Resistor Calculator free?
SJ Resistor Calculator is free to download, with in-app purchases available.
Is First Due Unify free?
First Due Unify is free to download, with no in-app purchases.
Do SJ Resistor Calculator or First Due Unify have ads?
SJ Resistor Calculator shows ads; First Due Unify does not.

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