Electronics Tools & Calculator vs OCTO Flashcards
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electronics Tools & Calculator
This app serves as a pocket-sized electronics lab, offering a comprehensive reference for components and circuits. It simplifies complex calculations for filters, inductors, and various circuit configurations, aiding both engineers and hobbyists in their design processes.
- Electronic component reference
- Electronic circuit reference
- Filter design calculators
- Inductor winding calculators
- Transformer winding calculators
- Resistor and capacitor calculations
- Ohm's law and power calculations
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Calculate, simulate, and understand electronic circuits with more than 60 calculators, interactive tools, and illustrated engineering references. Electronics Tools & Calculator is an all-in-one toolkit for students, engineers, technicians, makers, and electronics enthusiasts. Use it to study circuit theory, select components, check designs, or troubleshoot projects with practical calculators and clear circuit visuals. MORE THAN 60 ELECTRONICS CALCULATORS Solve problems across a wide range of topics: • Ohm’s law, voltage, current, resistance, and power • Series and parallel resistors and capacitors • Four-band, five-band, and SMD resistor codes • Voltage and current dividers • DC power and ripple voltage • RC, RL, LC, and RLC circuits • LED resistor and parallel LED calculations • Capacitor and inductor charging • Star-to-delta and delta-to-star conversions ACTIVE AND PASSIVE FILTER DESIGN Design and explore: • RC, RL, and LC filters • Butterworth and Chebyshev filters • Active and passive filters • Sallen-Key active filters • Band-pass and band-reject filters • Twin-T notch filters Selected advanced calculators include response graphs, helping you visualize how component values affect circuit behavior. AMPLIFIERS AND SEMICONDUCTORS Work with practical tools for: • 555 timer astable and monostable circuits • BJT analysis, biasing, Q-point, and switching • MOSFET switching • Inverting, non-inverting, and difference amplifiers • Class A, Class B, and Class AB amplifiers • Differential amplifiers and current mirrors • LM386 audio amplifier circuits POWER, RF, AND DESIGN TOOLS Explore calculations for: • Linear regulators and heat dissipation • Buck and boost converters • Rectifiers and Zener regulators • Clippers, clampers, and voltage multipliers • PCB trace width • Air-core and multilayer inductors • Transformers • Coaxial cables and waveguides • Antenna length and skin depth • dBm, watts, and decibel conversions • Servo and stepper motors DIGITAL ELECTRONICS Study essential digital circuits with clear diagrams and truth tables: • Logic gates • Flip-flops and counters • Multiplexers and demultiplexers • Encoders and decoders • Shift registers • Common digital integrated circuits INTERACTIVE CIRCUIT TOOLS Explore circuit behavior through interactive simulations and strong visual explanations. Adjust values, examine circuit configurations, and connect formulas with practical electronic designs. ILLUSTRATED ELECTRONICS REFERENCES Access more than 30 guides covering resistors, capacitors, inductors, transformers, diodes, BJTs, MOSFETs, IGBTs, UJTs, SCRs, DIACs, TRIACs, operational amplifiers, regulators, 555 timers, sensors, digital logic, Arduino boards, and ATmega microcontrollers. The guides combine explanations, equations, circuit diagrams, pinouts, truth tables, and practical notes to connect theory with real-world applications. DESIGNED FOR FASTER WORK • Search calculators by name • Save frequently used tools to Favorites • View response graphs in selected calculators • Export results from selected tools as PDF documents • Automatically switch between light and dark appearance • Use an interface designed for phones and larger screens • Choose from 15 supported languages • Access additional features through optional Pro tools Whether you are learning electronics, designing a filter, analyzing an amplifier, or checking values at the workbench, Electronics Tools & Calculator keeps useful tools and references close at hand. Important: This app is intended for education and design assistance. Always verify calculations, component ratings, circuit requirements, and safety considerations before building or operating electronic equipment.
OCTO Flashcards
This app offers a digital solution for studying with flashcards, allowing users to write and draw using an Apple Pencil. It provides organizational tools like folders and color-coding, along with study features to track mastered cards and facilitate quick review sessions. Go paperless and create unlimited study materials without cost.
- Apple Pencil support for writing and drawing
- Cloud-backed database for card storage
- Folder organization and color-coding
- Mastered card tracking
- Quick study sessions with swipe/tap gestures
- Unlimited card creation
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Let OCTO solve the tradeoff between modern technology and traditional flashcard studying! Utilize your Apple Pencil to write or draw anything you need to memorize- no more constraints from text-only flashcards. STAY ORGANIZED * OCTO's cloud-backed database ensures you never lose your flashcards * Keep all your study materials in one place * Group together flashcard sets into folders * Color code your flashcard sets and folders STUDY EFFECTIVELY * Memorize as you create your flashcards by writing out your material * Keep track of cards you have mastered * Choose to study only mastered cards for a challenge or all flashcards for a refresh * Have quick study sessions with our simple swipe or tap gestures GO PAPERLESS * Create unlimited cards without worrying about the costs * Reduce paper waste and your carbon footprint
Screenshots
Verdict
The clearest difference is rating: Electronics Tools & Calculator at 4.0 against OCTO Flashcards's 2.6. Electronics Tools & Calculator also leads on monetization model (free vs ad-supported) and device support (3 vs 1). OCTO Flashcards's advantage is review sentiment (54% vs 17%) and update cadence (every 11 days vs every 6 weeks). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Electronics Tools & Calculator holds the better App Store score, 4.0 against 2.6. Both are backed by a comparable volume of ratings — 16 and 16 respectively. Written reviews complicate that: 17% of Electronics Tools & Calculator's written reviews are positive against 54% of OCTO Flashcards's, so the app with the better star average is not the one people write more warmly about.
Electronics Tools & Calculator ships an update every 6 weeks, OCTO Flashcards every 11 days. The most recent releases landed on September 27, 2026 and August 20, 2026 respectively.
| Parameter | Electronics Tools & Calculator | OCTO Flashcards |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (16 ratings) — better | 2.6 (16 ratings) |
| Positive reviews | 16.7% of reviews | 53.8% of reviews — better |
| Number of ratings | 16 | 16 |
| Update frequency | Every 6 weeks | Every 11 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 63 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Anas Abubakar | Elaine Kodama |
Customer experience
Electronics Tools & Calculator
OCTO Flashcards
In-app purchases
Electronics Tools & Calculator
No in-app purchases
OCTO Flashcards
No in-app purchases
Questions
Is Electronics Tools & Calculator free?
Is OCTO Flashcards free?
Which has better reviews, Electronics Tools & Calculator or OCTO Flashcards?
Do Electronics Tools & Calculator or OCTO Flashcards have ads?
Which is updated more often, Electronics Tools & Calculator or OCTO Flashcards?
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