OpAmplifiers vs MATHCOUNTS Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpAmplifiers
This app aids electronics students by providing information on operational amplifier applications, including schematics, formulas, and component calculations. It offers a simple interface to revise key concepts and check amplifier pinouts.
- Operational amplifier application revision
- Schematics and input value display
- Formula lookup
- Component value calculation
- Amplifier pinout checking
- Supports multiple op-amp circuit types
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The ideal app for electronics studies ! OpAmplifiers allows you to easily revise what you should know about the main applications of Operational Amplifiers, but that's not it ! You can also use OpAmplifiers to calculate the values of your components and quickly check out the pinning of your amplifier, all in a simple and smooth interface. For each application, OpAmplifiers allows you to : - See schematics, and input values. - See the formula of the application. - Check the pinning of your amplifier. The following Operational Amplifier applications are available : - Voltage Follower - Comparator - Inverting Amplifier - Non Inverting Amplifier - Summing Amplifier - Differential Amplifier - Inverting Integrator - Inverting Differentiator
MATHCOUNTS Trainer
Prepare for MATHCOUNTS competitions with thousands of practice problems from past events. Learn from detailed solutions, track your progress, and compete with others on the leaderboard. This free tool is designed for aspiring mathletes of all skill levels.
- Thousands of practice problems
- Problems from past competitions
- Full solutions provided
- Progress tracking
- Leaderboard competition
- Practice for all levels
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Train your way to Nationals with the free MATHCOUNTS Trainer presented by Art of Problem Solving! With thousands of problems from previous School, Chapter, State, and National MATHCOUNTS competitions, the Trainer is great practice for aspiring MATHCOUNTS Mathletes of all levels. Full solutions are provided for every problem so players can learn how to approach even the toughest questions. Track your progress, compete against others, and see if you can climb to the top of the Leaderboard on the new MATHCOUNTS Trainer today! MATHCOUNTS Trainer only supports Guest mode on iOS. Play online at aops.com/mc for the full training experience. MATHCOUNTS® and Mathlete® are registered trademarks of the MATHCOUNTS Foundation.
Screenshots
Verdict
The clearest difference is rating: OpAmplifiers at 5.0 against MATHCOUNTS Trainer's 4.2. OpAmplifiers also leads on update cadence (every 6 weeks vs every 3 months) and iOS requirement (6.0 vs 12.0). MATHCOUNTS Trainer's advantage is ratings volume (102 vs 1). On price, ads, in-app purchases and monetization model 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.
OpAmplifiers holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: MATHCOUNTS Trainer has 102 ratings behind it against 1, so its average is the more settled of the two.
OpAmplifiers ships an update every 6 weeks, MATHCOUNTS Trainer every 3 months. The most recent releases landed on September 23, 2026 and September 28, 2026 respectively.
| Parameter | OpAmplifiers | MATHCOUNTS Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (102 ratings) |
| Positive reviews | — | 70.7% of reviews |
| Number of ratings | 1 | 102 — better |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 3 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Kyrill Cousson | Art of Problem Solving |
Customer experience
OpAmplifiers
MATHCOUNTS Trainer
In-app purchases
OpAmplifiers
No in-app purchases
MATHCOUNTS Trainer
No in-app purchases
Questions
Is OpAmplifiers free?
Is MATHCOUNTS Trainer free?
Which has better reviews, OpAmplifiers or MATHCOUNTS Trainer?
Do OpAmplifiers or MATHCOUNTS Trainer have ads?
Which is updated more often, OpAmplifiers or MATHCOUNTS Trainer?
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