Comparison

555 Timer & Oscillators Guide vs The Root of All Code

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

Head to head
About

555 Timer & Oscillators Guide

Features
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Master the design of oscillators and waveform generators using 555 timer integrated circuits, digital logic integrated circuits, operational amplifiers, and transistors. The application provides a comprehensive collection of over 130 tutorials and circuit diagrams, covering 555 timer circuits and practical applications, CMOS 4000 series logic oscillators, TTL 74LS and 74HC series oscillators, operational amplifier–based waveform generators, and transistor multivibrators. Designed for electronics beginners, students, hobbyists, and professional engineers, the app serves as a complete reference and learning tool for designing, understanding, and building oscillators, multivibrators, pulse generators, and waveform circuits commonly used in both analog and digital electronics. In addition to tutorials and schematics, the app includes built-in calculators for frequency, timing, duty cycle, and component value estimation, helping users quickly calculate and adjust circuit parameters. All topics are presented with clear circuit diagrams and detailed explanations. 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! Covered Topics: • 555 Timer IC Series • Astable, monostable, and bistable modes • Pulse Width Modulation (PWM) • Voltage conversion circuits • Sensor and external module interfacing • CMOS Logic Oscillators • CMOS 4000 series circuits • Astable, monostable, and bistable modes • Gated CMOS oscillators • TTL / HC Logic Oscillators • TTL 74LS series circuits • 74HC series logic oscillators • Astable and monostable modes • Operational Amplifier Oscillators • Sine wave generators • Square-wave pulse generators • Triangle wave generators • Transistor-Based Oscillators • Transistor-Based Astable multivibrators • Transistor-Based Monostable multivibrators The content is regularly updated and expanded with each new release, ensuring the latest tutorials and circuit examples are always available.

About

The Root of All Code

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Ever wonder what programming looks like outside the mainstream? The Root of All Code introduces you to languages like APL, Forth, Prolog, and others that approach problem-solving in radically different ways. They're the sorts of languages that go ignored in industry but can dramatically improve your thought process and solutions even if you never deploy a line of them in production. You don't need to master these languages (though you might want to). The goal is to understand the ideas behind them that will sharpen your thinking and improve the code you write every day, in any language. Features: - Explore non-mainstream programming languages and the paradigms they embody - Thoughtful code snippets showing how different languages solve problems - Currently supports nine programming languages - Currently available in English and Spanish Built by a developer, for developers, because the best way to grow is to see how the other half codes.

Screenshots

555 Timer & Oscillators Guide4 screens

Verdict

The call

The clearest difference is device support: 555 Timer & Oscillators Guide at 2 against The Root of All Code's —. The Root of All Code's advantage is iOS requirement (13.0 vs 16.0). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 6 level
555 Timer & Oscillators Guide versus The Root of All Code: the parameters behind the verdict, then further details
Parameter555 Timer & Oscillators GuideThe Root of All Code
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 5 months—
AdsYes—
In-app purchasesNoNo
DevicesiPhone, iPad — better—
Requires iOS16.013.0 — better
Further details — not scored
Size24 MB30 MB
Age rating4+4+
DeveloperALG Software LabDanny Betancourt-Anguiano

In-app purchases

None

555 Timer & Oscillators Guide

No in-app purchases

None

The Root of All Code

No in-app purchases

Questions

Is 555 Timer & Oscillators Guide free?
555 Timer & Oscillators Guide is free to download, with no in-app purchases.
Is The Root of All Code free?
The Root of All Code is free to download, with no in-app purchases.

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