Comparison

Electrical Engineering vs Sign,Stamp,Convert | ConfiDoc

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

Head to head
About

Electrical Engineering

This app provides electrical calculations and fundamental concepts for students and professionals. It covers Ohm's Law, power calculations, circuit analysis, and advanced topics like wire sizing and power factor correction.

Highlights
  • Electrical calculations
  • Basic electrical knowledge
  • Advanced electrical topics
  • Ohm's Law and power calculations
  • Circuit analysis theorems
  • Wire sizing and voltage drop
  • Resistor color codes
Features
Read full description

Electrical engineering for technical school and college: theory, formulas and calculators explained clearly. WHY CHOOSE IT • In-depth theory for every component and circuit • Calculators for every formula • Quizzes, mind maps and flashcards for revision • AI Scanner: turn your notes into maps and solve problems TOPICS • Direct current: Ohm's law, Kirchhoff's laws • Alternating current: phasors, impedance • Components: resistors, capacitors, inductors • Circuits: series, parallel, RLC • Electric machines: motors, transformers, generators • Electronics: diodes, transistors, semiconductors STUDY TOOLS • Calculators, quizzes, mind maps, flashcards, archive IDEAL FOR Technical school students and electrical engineering majors. Start studying electrical engineering the easier way today. SUBSCRIPTIONS AND TERMS Full access is available via auto-renewable subscription: • Monthly Subscription • Annual Subscription Prices are shown in the app at purchase and may vary by region. Payment will be charged to your Apple ID at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours of the end of the current period. Subscriptions can be managed and auto-renew turned off in your Apple ID Account Settings after purchase. Privacy Policy: https://masterapps.it/privacy_policy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sign,Stamp,Convert | ConfiDoc

Features
Read full description

With ConfiDoc, you can easily convert files into multiple formats, capture photos and instantly convert them to PDFs, and sign documents with your custom signature or stamp them. Key Features: Convert with Ease: Effortlessly switch between file formats to suit your needs. Instant Camera-to-PDF: Capture images with the app’s camera and instantly create high-quality PDFs. Personalized Signatures & Stamps: Sign documents with your created signature or add a professional touch with a custom stamp. 30-Day File History: Access recent files for a full month, so you never lose track of your work. Advanced Security: ConfiDoc prioritizes your document security with PIN-protected access, ensuring that only you can open the app and view its contents. With ConfiDoc, you can streamline document management and keep your files secure, all in one place. Download today and experience a new level of efficiency and security! One time purchase. - Lifetime use! Privacy Policy: https://sites.google.com/view/confidocapp/privacy-policy Terms of Service: https://sites.google.com/view/confidocapp/terms-if-service

Screenshots

Electrical Engineering4 screens
Sign,Stamp,Convert | ConfiDoc4 screens

Verdict

The call

The clearest difference is price: Electrical Engineering at Free against Sign,Stamp,Convert | ConfiDoc's $4.99. Sign,Stamp,Convert | ConfiDoc's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 months). On in-app purchases, 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

Electrical Engineering is free to download; Sign,Stamp,Convert | ConfiDoc costs $4.99 up front. Electrical Engineering sells 7 in-app purchases, starting at $3.99 per month and Sign,Stamp,Convert | ConfiDoc sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Electrical Engineering ships an update every 2 months, Sign,Stamp,Convert | ConfiDoc every 4 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Electrical Engineering versus Sign,Stamp,Convert | ConfiDoc: the parameters behind the verdict, then further details
ParameterElectrical EngineeringSign,Stamp,Convert | ConfiDoc
PriceFree — better$4.99
Rating4.8 (12 ratings) — better—
Positive reviews73.9% of reviews—
Number of ratings12 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.515.1 — better
Further details — not scored
Size115 MB22 MB
Age rating4+4+
DeveloperCarlo Terraccianojeiox guarda de documentos e logistica ltda

In-app purchases

7 purchases

Electrical Engineering

Subscriptions5
  • Monthly subscription - Electro$3.991 Month
  • Monthly subscription - Electro$5.991 Month
  • Annual Subscription Electronic$8.991 Year
Show 2 more
  • Annual Subscription Electronic$24.991 Year
  • Annual Subscription Electronic1 Year trial2 variants$24.991 Year
One-time2
  • Lifetime Subscription Electro$29.99
  • Circuits & Electric Machines$99.99
2 purchases

Sign,Stamp,Convert | ConfiDoc

Subscriptions2
  • ConfiDoc_weekly$2.997 Days
  • ConfiDoc_Monthly$7.991 Month

Questions

Is Electrical Engineering free?
Electrical Engineering is free to download, with in-app purchases available.
Is Sign,Stamp,Convert | ConfiDoc free?
Sign,Stamp,Convert | ConfiDoc costs $4.99, and also offers in-app purchases.
Do Electrical Engineering or Sign,Stamp,Convert | ConfiDoc have ads?
Electrical Engineering shows ads; Sign,Stamp,Convert | ConfiDoc does not.
Which is updated more often, Electrical Engineering or Sign,Stamp,Convert | ConfiDoc?
Electrical Engineering ships an update every 2 months, and Sign,Stamp,Convert | ConfiDoc every 4 days. Most recently, Electrical Engineering was updated on October 22, 2026 and Sign,Stamp,Convert | ConfiDoc on October 25, 2026.

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