# OpAmplifiers vs Digital Electronics Guide

The clearest difference is ads: OpAmplifiers at none against Digital Electronics Guide's shown. OpAmplifiers also leads on monetization model (free vs ad-supported) and iOS requirement (6.0 vs 16.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for OpAmplifiers against 5.0 for Digital Electronics Guide. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

OpAmplifiers ships an update every 6 weeks, Digital Electronics Guide every 5 weeks. The most recent releases landed on September 23, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | OpAmplifiers | Digital Electronics Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/digital-electronics-guide/id6478166232/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 3 MB | 24 MB |
| Requires iOS | **6.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kyrill Cousson](https://appshunter.io/developer/478650872) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## 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


### Digital Electronics Guide

[App page](https://appshunter.io/ios/app/digital-electronics-guide/id6478166232)

This app serves as a comprehensive reference for digital electronics, covering essential theory and practical guides. It's designed for students, engineers, and hobbyists to learn and prototype digital circuits with ease. Features include detailed information on logic gates, IC families, and various digital components.

**Highlights:** Logic gate tutorials, IC reference data (TTL 7400, CMOS 4000), Digital circuit design and prototyping, Covers counters, flip-flops, and more, Available in 14 languages, Detailed tutorials and references

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OpAmplifiers free?

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

### Is Digital Electronics Guide free?

Digital Electronics Guide is free to download, with no in-app purchases.

### Which has better reviews, OpAmplifiers or Digital Electronics Guide?

OpAmplifiers and Digital Electronics Guide are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do OpAmplifiers or Digital Electronics Guide have ads?

Digital Electronics Guide shows ads; OpAmplifiers does not.

### Which is updated more often, OpAmplifiers or Digital Electronics Guide?

OpAmplifiers ships an update every 6 weeks, and Digital Electronics Guide every 5 weeks. Most recently, OpAmplifiers was updated on September 23, 2026 and Digital Electronics Guide on August 27, 2026.

---

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