Comparison

Renesas MCU Guide vs Holtek MCU Selector

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Renesas MCU Guide

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
Read full description

Do you want to find the right suitable microcontroller for non-automotive applications out of the wide line-up of 16-bit and 32-bit MCUs Renesas Electronics can offer for your next application design? Using this smart MCU Guide App you will be able to do a search based on more than 60 parameters to find the right choice among the RA, RX, RL78 and Synergy Product Families. Once the right fitting product for your application needs has been found, you can get instant access to the product details like datasheet, block diagram, sample ordering etc. A new feature added is the search for development kits. Here you can search for development board metric item, special hardware elements, communication interface, etc. to drill down to the right board for your needs. If you have found a Renesas part name and wonder about the specification and feature set, simply key in this part number to the part number search interface to get full details. In addition this MCU Guide App offers a simple access to user community sites for RA, RX, RL78 and Synergy Family where you will be able to find the latest discussions on the different product groups. You are welcome to join these discussions and stay connected! Features: - Easy to use MCU selection guide - MCU Parametric Search – more than 60 selectable parameter categories for MCU selection - Development Board Parametric Search – parameter categories search for Development Boards - Featuring RA, RX, RL78 and Synergy Product Families - Comparing different selections by Data table - Easy sharing of found products by using social media interfaces and email - Redirect to ordering site - Instant datasheet access - Access to product Block Diagram - Part Number Search - Access to the Communities RA, RX, RL78, Synergy

About

Holtek MCU Selector

Features
Read full description

The Holtek MCU Selector App is provided for mobile device users. By setting up parameter search conditions, customers can select their most suitable MCU by choosing from the many MCU product categories in real time and then checking the latest product and specification information. This App therefore provides a superior tool for product selection. The Holtek MCU Selector App has an intuitive and convenient operational process. Here search conditions are setup and then a search implemented according to more than 80 parameters to find the right device selection from among the full range of 8-bit and 32-bit MCUs. If the part number of a Holtek MCU is already known and it is required to find the specifications and characteristics of the device, then it is only necessary to enter the part number in the search interface to obtain complete detailed information. Features - Intuitive and convenient MCU selection tool - Supports both Holtek 8-bit and 32-bit MCU series - Parameter search function based on multiple MCU application categories and technical specifications - Accurate search facility and viewing of information based on specific device - Selection results can be sorted, compared, saved and recalled - Management function for customer’s preferred MCU devices - Can use social messaging software to share obtained devices - Instant access to MCU key specifications and related technical documents - Integrated alongside the Holtek group website

Screenshots

Renesas MCU Guide4 screens
Holtek MCU Selector4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
Renesas MCU Guide versus Holtek MCU Selector: the parameters behind the verdict, then further details
ParameterRenesas MCU GuideHoltek MCU Selector
PriceFreeFree
Rating4.4 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size25 MB19 MB
Age rating17+4+
DeveloperRenesas ElectronicsHoltek Semiconductor(China) Inc

In-app purchases

None

Renesas MCU Guide

No in-app purchases

None

Holtek MCU Selector

No in-app purchases

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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