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.
555 Timer & Oscillators Guide
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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.
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.
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Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | 555 Timer & Oscillators Guide | The Root of All Code |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 months | — |
| Ads | Yes | — |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | — |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | ALG Software Lab | Danny Betancourt-Anguiano |
In-app purchases
555 Timer & Oscillators Guide
No in-app purchases
The Root of All Code
No in-app purchases
Questions
Is 555 Timer & Oscillators Guide free?
Is The Root of All Code free?
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