Electrical Engineering vs H2O Activa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
H2O Activa
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Aplicación que permite llevar el detalle del estado de cada equipo y parámetro en equipamiento de tratamiento de aguas provisto por h2oactiva
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Verdict
The clearest difference is in-app purchases: H2O Activa at none against Electrical Engineering's 8. H2O Activa also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.5). 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
Both are free to download. Electrical Engineering sells 7 in-app purchases, starting at $3.99 per month. H2O Activa asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.
| Parameter | Electrical Engineering | H2O Activa |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (12 ratings) — better | — |
| Positive reviews | 73.9% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 115 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlo Terracciano | Frexis SpA |
In-app purchases
Electrical Engineering
- Monthly subscription - Electro$3.991 Month
- Monthly subscription - Electro$5.991 Month
- Annual Subscription Electronic$8.991 Year
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- Annual Subscription Electronic$24.991 Year
- Annual Subscription Electronic1 Year trial2 variants$24.991 Year
- Lifetime Subscription Electro$29.99
- Circuits & Electric Machines$99.99
H2O Activa
No in-app purchases
Questions
Is Electrical Engineering free?
Is H2O Activa free?
Do Electrical Engineering or H2O Activa have ads?
Which is updated more often, Electrical Engineering or H2O Activa?
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