Comparison

Digital Electronics Pro vs Big O Notation

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

Head to head
About

Digital Electronics Pro

Features
Read full description

Digital Electronics Pro is a powerful reference tool for electronics students, engineers, and hobbyists. Whether you're just starting out or already experienced, this app helps you design, learn, and prototype with ease. It combines essential theory with practical guides and covers key digital electronics topics, including logic gates, counters, flip-flops, and IC reference data. The app also features detailed information on popular digital IC families such as TTL 7400 and CMOS 4000 series. Perfect for quick learning or as a companion for working on electronic circuits and digital systems. Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! The Pro version offers additional features, including: • Favourites feature: Allows users to save topics and access them quickly. • Full-text search: Enables quick navigation across all app content. The app includes detailed tutorials and references for: • Basic logic • Families of digital chips • Universal logic elements • Elements with Schmitt trigger • Buffer elements • Flip-flops • Registers • Counters • Adders • Multiplexers • Decoders and demultiplexers • 7-segment LED drivers • Encryptors • Digital comparators • 7400 series ICs • 4000 series ICs • Astable CMOS Oscillators • Monostable CMOS Oscillators • Bistable CMOS Oscillators • Gated CMOS Oscillators • TTL Oscillators Whether you're learning, teaching, or building real-world digital circuits, Digital Electronics Pro is your trusted companion every step of the way.

About

Big O Notation

Features
Read full description

Big O Notation is an independent study app for learning, reviewing, and practicing algorithm complexity. It is built for students, self-taught developers, coding interview candidates, and anyone who wants clearer intuition for time and space complexity. Study across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts with 160 focused questions. Every question includes an explanation so you can understand why an answer is right and where your reasoning went off track. Features: - FSRS spaced-repetition intervals for smarter review - Weak-point heatmap to spot topics that need attention - Daily challenge for steady practice - Mock exams for timed review - Offline practice - No login required Practice offline, no login required. Independent study app for Big O Notation practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.

Screenshots

Digital Electronics Pro4 screens
Big O Notation4 screens

Verdict

The call

The clearest difference is price: Big O Notation at Free against Digital Electronics Pro's $4.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Big O Notation is free to download; Digital Electronics Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Ā· 5 level
Digital Electronics Pro versus Big O Notation: the parameters behind the verdict, then further details
ParameterDigital Electronics ProBig O Notation
Price$4.99Free — better
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size21 MB38 MB
Age rating4+4+
DeveloperALG Software LabAFTW LLC

In-app purchases

None

Digital Electronics Pro

No in-app purchases

None

Big O Notation

No in-app purchases

Questions

Is Digital Electronics Pro free?
Digital Electronics Pro costs $4.99, with no in-app purchases.
Is Big O Notation free?
Big O Notation is free to download, with no in-app purchases.
Do Digital Electronics Pro or Big O Notation have ads?
Neither Digital Electronics Pro nor Big O Notation shows ads.

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