# OpAmplifiers vs MATHCOUNTS Trainer

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.

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.

## The numbers

| Metric | OpAmplifiers | MATHCOUNTS Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews)** | [4.2 (102 ratings)](https://appshunter.io/ios/app/mathcounts-trainer/id1023961880/reviews) |
| Number of ratings | 1 | **102** |
| Positive reviews | — | 70.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 3 MB | 37 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kyrill Cousson](https://appshunter.io/developer/478650872) | [Art of Problem Solving](https://appshunter.io/developer/1023961879) |

## What reviewers say

### OpAmplifiers

[App page](https://appshunter.io/ios/app/opamplifiers/id700960348)

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.

**Highlights:** Operational amplifier application revision, Schematics and input value display, Formula lookup, Component value calculation, Amplifier pinout checking, Supports multiple op-amp circuit types

**Features:** macOS Compatibility

**In-app purchases:** none


### MATHCOUNTS Trainer

[App page](https://appshunter.io/ios/app/mathcounts-trainer/id1023961880)

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.

**Highlights:** Thousands of practice problems, Problems from past competitions, Full solutions provided, Progress tracking, Leaderboard competition, Practice for all levels

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpAmplifiers free?

OpAmplifiers is free to download, with no in-app purchases.

### Is MATHCOUNTS Trainer free?

MATHCOUNTS Trainer is free to download, with no in-app purchases.

### Which has better reviews, OpAmplifiers or MATHCOUNTS Trainer?

OpAmplifiers is rated higher. OpAmplifiers averages 5.0 out of 5 from 1 ratings, while MATHCOUNTS Trainer averages 4.2 from 102 ratings.

### Do OpAmplifiers or MATHCOUNTS Trainer have ads?

Neither OpAmplifiers nor MATHCOUNTS Trainer shows ads.

### Which is updated more often, OpAmplifiers or MATHCOUNTS Trainer?

OpAmplifiers ships an update every 6 weeks, and MATHCOUNTS Trainer every 3 months. Most recently, OpAmplifiers was updated on September 23, 2026 and MATHCOUNTS Trainer on September 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*