Opamp tools vs Learn C Language
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Opamp tools
Read full descriptionHide full description
This app is the collection of operational amplifier calculators. It is suitable for hobbyist or electronic engineer. Features * Inverting amplifier * Non-Inverting amplifier * Differential amplifier * Summing amplifier * Inverting comparator * First-order filter * Second-order filter (HPF) * Phase shift oscillator * Colpitts oscillator * Limit 5 combinations of component values * Share CSV via AirDrop * Upload CSV to iCloud Drive (For iOS8 or later) Pro Features * Instrumentation amplifier * Non-inverting comparator * Second-order filter (LPF) * Wien bridege oscillator * Hartley oscillator * No limitation of the number of suggestions * Selectable 1%,5%,10%,20% of values
Learn C Language
Master C programming with this beginner-friendly app. It offers structured lessons, real-world code examples, and over 250 interactive quiz questions to reinforce learning. Study in one of seven languages and progress from basic to advanced concepts.
- Beginner-friendly C programming lessons
- Real-world code examples
- Interactive quiz system with 250+ questions
- Available in 7 languages
- Covers advanced C concepts
- Progress tracking
Read full descriptionHide full description
Learn C programming from the ground up with this comprehensive, beginner-friendly app. No prior coding experience is required β start with the basics and progress to advanced concepts at your own pace. Whether youβre just starting your programming journey or youβre an experienced developer looking for a quick reference, youβll find concise explanations, clear examples, and practical code snippets to help you understand and apply C programming concepts. Well-structured lessons with clear, real-world code examples make learning efficient and engaging. Test your knowledge with our built-in interactive quiz system β over 250 carefully crafted questions designed to reinforce learning, prepare you for technical interviews, and boost exam readiness. Available in 7 Languages: β’ English, French, German, Italian, Portuguese, Russian, and Spanish - study in your native language! Covered themes include: β’ Variables and data types β’ Constants and Literals β’ Operations β’ Type conversion β’ Control structures β’ Loops β’ Arrays β’ Functions β’ Scope β’ Storage Classes β’ Pointers β’ Characters and strings β’ Structures β’ Enumerations β’ Console I/O β’ Formatted output β’ Formatted input β’ Preprocessor β’ Error handling Learn faster. Practice smarter. Code better.
Screenshots
Verdict
The clearest difference is in-app purchases: Learn C Language at none against Opamp tools's 1. Learn C Language also leads on update cadence (every 3 months vs every 12 months). Opamp tools's advantage is ads (none vs shown) and iOS requirement (12.0 vs 16.0). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Opamp tools sells 1 one-off in-app purchase. Learn C Language asks for nothing beyond the download.
Opamp tools ships an update every 12 months, Learn C Language every 3 months. The most recent releases landed on September 26, 2026 and September 16, 2026 respectively.
| Parameter | Opamp tools | Learn C Language |
|---|---|---|
| Price | Free | Free |
| Positive reviews | β | 0.0% of reviews |
| Update frequency | Every 12 months | Every 3 months β better |
| Ads | No β better | Yes |
| In-app purchases | Yes | No β better |
| Monetization | β | Ad-supported |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 12.0 β better | 16.0 |
| Further details β not scored | ||
| Size | 4 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | ALG Software Lab |
In-app purchases
Opamp tools
- Unlock pro feature$1.99
Learn C Language
No in-app purchases
Questions
Is Opamp tools free?
Is Learn C Language free?
Do Opamp tools or Learn C Language have ads?
Which is updated more often, Opamp tools or Learn C Language?
Other comparisons















