Comparison

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.

Head to head
About

Opamp tools

Read 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

About

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.

Highlights
  • 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
Features
Read 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 you’re just starting your programming journey or you’re an experienced developer looking for a quick reference, you’ll 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

Opamp tools4 screens
Learn C Language4 screens

Verdict

The call

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

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

Both are free to download. Opamp tools sells 1 one-off in-app purchase. Learn C Language asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard4 real differences Β· 4 level
Opamp tools versus Learn C Language: the parameters behind the verdict, then further details
ParameterOpamp toolsLearn C Language
PriceFreeFree
Positive reviewsβ€”0.0% of reviews
Update frequencyEvery 12 monthsEvery 3 months β€” better
AdsNo β€” betterYes
In-app purchasesYesNo β€” better
Monetizationβ€”Ad-supported
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS12.0 β€” better16.0
Further details β€” not scored
Size4 MB14 MB
Age rating4+4+
DeveloperSiu Yuen HoALG Software Lab

In-app purchases

1 purchases

Opamp tools

One-time1
  • Unlock pro feature$1.99
None

Learn C Language

No in-app purchases

Questions

Is Opamp tools free?
Opamp tools is free to download, with in-app purchases available.
Is Learn C Language free?
Learn C Language is free to download, with no in-app purchases.
Do Opamp tools or Learn C Language have ads?
Learn C Language shows ads; Opamp tools does not.
Which is updated more often, Opamp tools or Learn C Language?
Opamp tools ships an update every 12 months, and Learn C Language every 3 months. Most recently, Opamp tools was updated on September 26, 2026 and Learn C Language on September 16, 2026.

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