Electrical Engineering vs CRUMB
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/
CRUMB
Explore and build electronic circuits in an interactive 3D environment. Learn circuit basics, experiment with components, and analyze performance with built-in tools without the risk of damaging real parts.
- Interactive 3D circuit construction
- Wide selection of electronic components
- Study transistors and audio filtering
- Program EEPROMs
- Built-in oscilloscope and analysis views
- Prototype analysis before real-world construction
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CRUMB offers an easy to use and interactive introduction to electronic circuits Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program For the beginner, it is possible to learn and understand the basics of interactivity, and for the enthusiast it is possible to analyse and perfect prototypes before constructing real world models Using the built in oscilloscope and analysis views, it is possible to see clearly the interaction between components from within the wires themselves Through community feedback and suggestion, there will be many more components and features added. For a full feature list and development schedule please visit the website http://www.crumbsim.com
Screenshots
Verdict
The clearest difference is price: Electrical Engineering at Free against CRUMB's $7.99. Electrical Engineering also leads on rating (4.8 vs 4.4) and review sentiment (74% vs 56%). CRUMB's advantage is in-app purchases (none vs 8) and ads (none vs shown). On 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
Electrical Engineering is free to download; CRUMB costs $7.99 up front. Electrical Engineering sells 7 in-app purchases, starting at $3.99 per month. CRUMB asks for nothing beyond the download.
Electrical Engineering holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: CRUMB has 138 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 74% of Electrical Engineering's written reviews are positive against 56% of CRUMB's.
Electrical Engineering ships an update every 2 months, CRUMB weekly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | Electrical Engineering | CRUMB |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 4.8 (12 ratings) — better | 4.4 (138 ratings) |
| Positive reviews | 73.9% of reviews — better | 55.6% of reviews |
| Number of ratings | 12 | 138 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #171 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 115 MB | 496 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlo Terracciano | Vital Group Limited |
Customer experience
Electrical Engineering
CRUMB
Bugs and requests
Electrical Engineering
Not enough reviews yet to summarise bugs or requests.
CRUMB
Reported bugs
11 issues- App crashes when using the “corners” option on jumper wires
- Experienced some crashing on Mac
- Component images do not rotate
- Power rails are backwards related to real life breadboards
- Program counters (74HC161) do not reset to 0 on a reset signal
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- 74HC245 enable pin should be labeled active low but it’s not
- EEPROM sometimes corrupts the data saved in the HEX editor
- Many components, most commonly the transistor, lock their image in place even if deleted
- Buttons and switches will react to touching the screen even when not touching the component location
- Rotation is broken on the app version
- UI can be a little flaky at times
Requested features
31 requests- Implement modern components (TI IC, LTC series)
- Add 12 segment display
- Add Arduino and other microcontrollers
- Add a spot to code Arduino/microcontrollers
- Allow custom wire colors
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- Create circuit boards with custom colors
- Add pre-made circuit boards
- Ability to create custom electronic components from circuits
- Improve corner-to-corner wire mode for breadboard/power rail connection
- Add snap rotations and positions
- Add CD4511 component
- Add oscilloscope
- Add signal generator
- Add BJT transistors
- Add op amp
- Add MOSFETs
- Add transformers
- Add relays
- Add AC power supply
- Add music player for amplifier learning
- Add more examples of classic circuits
- Simulation pausing
- Add hotkeys to desktop version
- Add resistance monitoring view
- Allow push buttons to be placed across rails
- Add 'Show Pins' view to app version
- Add schematic feature
- Add manual
- Add more functions and components
- Add more examples
- PC integration
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
CRUMB
No in-app purchases
Questions
Is Electrical Engineering free?
Is CRUMB free?
Which has better reviews, Electrical Engineering or CRUMB?
Do Electrical Engineering or CRUMB have ads?
Which is updated more often, Electrical Engineering or CRUMB?
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