Comparison

SJ Resistor Calculator vs Walvis

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
Read full description

############################# # 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

Walvis

Features
Read full description

Description Walvis is an innovative platform designed to streamline the accounting and document management processes for businesses and accountants. With its user-friendly interface and advanced features, Walvis allows you to digitize, categorize, and efficiently manage all your documents. Key Features Intelligent document scanning: Use artificial intelligence to automatically scan and read invoices and receipts, reducing the risk of manual errors. Instant in-app discussion: Facilitate communication between accountants and businesses with integrated discussion tools. Automated Data Entry: Save time and reduce errors with automated data entry powered by advanced algorithms. Mobile accessibility: Access and manage your documents anytime, anywhere, with the Walvis mobile app.

Screenshots

SJ Resistor Calculator4 screens
Walvis4 screens

Verdict

The call

The clearest difference is in-app purchases: Walvis at none against SJ Resistor Calculator's 5. Walvis also leads on ads (none vs shown) and iOS requirement (13.4 vs 16.0). SJ Resistor Calculator's advantage is update cadence (every 2 weeks vs monthly). On price 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. SJ Resistor Calculator sells 5 one-off in-app purchases. Walvis asks for nothing beyond the download.

UpkeepUpdate frequency

SJ Resistor Calculator ships an update every 2 weeks, Walvis monthly. The most recent releases landed on July 18, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 5 level
SJ Resistor Calculator versus Walvis: the parameters behind the verdict, then further details
ParameterSJ Resistor CalculatorWalvis
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.4 — better
Further details — not scored
Size4 MB14 MB
Age rating4+4+
DeveloperStephane JAILLIARDSARL RED BEARD SOFT

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

Walvis

No in-app purchases

Questions

Is SJ Resistor Calculator free?
SJ Resistor Calculator is free to download, with in-app purchases available.
Is Walvis free?
Walvis is free to download, with no in-app purchases.
Do SJ Resistor Calculator or Walvis have ads?
SJ Resistor Calculator shows ads; Walvis does not.
Which is updated more often, SJ Resistor Calculator or Walvis?
SJ Resistor Calculator ships an update every 2 weeks, and Walvis monthly. Most recently, SJ Resistor Calculator was updated on July 18, 2026 and Walvis on September 20, 2026.

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