# ST op vs Microchip Events

The clearest difference is iOS requirement: ST op at 8.0 against Microchip Events's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ST op ships an update every 6 months, Microchip Events every 3 months. The most recent releases landed on October 8, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ST op | Microchip Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/st-op-amps/id574823376/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 93 MB | 77 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [STMicroelectronics](https://appshunter.io/developer/1801774735) | [Microchip Technology Inc.](https://appshunter.io/developer/368610396) |

## What reviewers say

### ST op

[App page](https://appshunter.io/ios/app/st-op-amps/id574823376)

This app helps engineers select operational amplifiers, comparators, and current sense amplifiers for their projects. It provides datasheets, common schematics, and package dimensions.

**Highlights:** Operational amplifier product selector, Downloadable datasheets, Commonly used schematics, Compensation methods information, Package mechanical dimensions

**Features:** macOS Compatibility

**In-app purchases:** none


### Microchip Events

[App page](https://appshunter.io/ios/app/microchip-events/id6670560451)

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

**In-app purchases:** none


## Frequently asked questions

### Is ST op free?

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

### Is Microchip Events free?

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

### Do ST op or Microchip Events have ads?

Neither ST op nor Microchip Events shows ads.

### Which is updated more often, ST op or Microchip Events?

ST op ships an update every 6 months, and Microchip Events every 3 months. Most recently, ST op was updated on October 8, 2026 and Microchip Events on October 27, 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.*