# Renesas MCU Guide vs Holtek MCU Selector

The clearest difference is update cadence: Holtek MCU Selector at every 2 months against Renesas MCU Guide's every 6 months. On price, ads, 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.

Renesas MCU Guide ships an update every 6 months, Holtek MCU Selector every 2 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Renesas MCU Guide | Holtek MCU Selector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/renesas-mcu-guide/id1561800210/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 25 MB | 19 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Renesas Electronics](https://appshunter.io/developer/1073878075) | [Holtek Semiconductor(China) Inc](https://appshunter.io/developer/1052056181) |

## What reviewers say

### Renesas MCU Guide

[App page](https://appshunter.io/ios/app/renesas-mcu-guide/id1561800210)

Easily find the ideal microcontroller for your non-automotive projects. Search over 60 parameters across multiple product families, access datasheets, and explore development kits. Connect with user communities for the latest discussions.

**Highlights:** Parametric MCU search with 60+ parameters, Development board search, Access datasheets and block diagrams, Part number search, Community forum access, Product comparison table, Easy sharing options

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

**In-app purchases:** none


### Holtek MCU Selector

[App page](https://appshunter.io/ios/app/holtek-mcu-selector/id6444018542)

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

**In-app purchases:** none


## Frequently asked questions

### Is Renesas MCU Guide free?

Renesas MCU Guide is free to download, with no in-app purchases.

### Is Holtek MCU Selector free?

Holtek MCU Selector is free to download, with no in-app purchases.

### Do Renesas MCU Guide or Holtek MCU Selector have ads?

Neither Renesas MCU Guide nor Holtek MCU Selector shows ads.

### Which is updated more often, Renesas MCU Guide or Holtek MCU Selector?

Renesas MCU Guide ships an update every 6 months, and Holtek MCU Selector every 2 months. Most recently, Renesas MCU Guide was updated on November 3, 2026 and Holtek MCU Selector on October 25, 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.*