# Operational Amplifiers Guide vs TouchBESO

The clearest difference is ads: TouchBESO at none against Operational Amplifiers Guide's shown. TouchBESO also leads on update cadence (every 2 days vs every 2 months) and iOS requirement (13.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

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

Operational Amplifiers Guide ships an update every 2 months, TouchBESO every 2 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Operational Amplifiers Guide | TouchBESO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 17 MB | 95 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Zhi Li](https://appshunter.io/developer/1803956248) |

## What reviewers say

### Operational Amplifiers Guide

[App page](https://appshunter.io/ios/app/operational-amplifiers-guide/id6467499897)

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

**In-app purchases:** none


### TouchBESO

[App page](https://appshunter.io/ios/app/touchbeso/id6743680067)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Operational Amplifiers Guide free?

Operational Amplifiers Guide is free to download, with no in-app purchases.

### Is TouchBESO free?

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

### Do Operational Amplifiers Guide or TouchBESO have ads?

Operational Amplifiers Guide shows ads; TouchBESO does not.

### Which is updated more often, Operational Amplifiers Guide or TouchBESO?

Operational Amplifiers Guide ships an update every 2 months, and TouchBESO every 2 days. Most recently, Operational Amplifiers Guide was updated on October 1, 2026 and TouchBESO on September 30, 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.*