Custom Keyboard Designer puts you in control with total customization of every key, layout, and function. Privacy-centric and feature-rich, it supports 40+ languages on Android devices including Wear OS, with a free base package and optional pro upgrades (EDP/EKP). Not ranked in top lists, it has a strong install base and steady momentum as shown by recent download activity 100,000+ total and 5.1K in the last 30 days.
Pros & Cons
Deep, per-key and per-layout customization
Privacy-focused design with no ads and offline operation as described
Free base package with optional pro upgrades (EDP/EKP)
Competitors may offer built-in themes, fonts, backgrounds, and richer emoji features that this app does not emphasize
There is a discrepancy between the long description's no-permissions claim and the listed requested permissions in the data
Fewer out-of-the-box visual customization options beyond colors compared to some rivals
About Custom Keyboard Designer
Custom Keyboard Designer is a tools app developed by Gerrit Humberg.
Install Statistics
Custom Keyboard Designer has been installed 270 thousand times. In the last 30 days, the app was installed 5.1 thousand times.
User Ratings
Custom Keyboard Designer is rated 4.33 out of 5 stars. The rating is based on 1.1 thousand ratings.
App Information
Custom Keyboard Designer is freely available from Google Play. The app size is 16.54 MB. The latest version available is 5.8.5. The last update was on October 29, 2026.
Technical Requirements
Custom Keyboard Designer requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since October 2018.
Description by Gerrit Humberg(from Google Play)
Design your custom keyboard — no ads, no tracking, full control of every key.
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Keyboard designer is the 2nd best customizable virtual keyboard on the market. You can change every aspect of existing presets, or create entirely new keyboards from scratch. The only other keyboard I'd say is equal, maybe even better; would be the unexpected keyboard with XML editing. But if you're not technologically inclined, and need a custom keyboard, keyboard designer would be the one for you.
★★★★☆Scarf doodle· Feb 16, 2025
It seems fine overall, but I think its lacking the feature im looking for. I'm trying to find a keyboard that can actively type color coded symbols. Not just have the keys be colored. Like if I were to type a 1, it would be yellow or in italics on a PDF.
★☆☆☆☆Grue Turtle· Aug 5, 2025
I can't figure out these instructions. How the heck do I change what character I get when I press shift and then a key? I'm just trying to recreate the actual symbols on the number row, so I can type the at symbol by pressing shift + 2
★☆☆☆☆David Spector· Mar 24, 2025
Horrible,! Here is the message I tried to write with the default keyboard design: "I'm surprised at, how differrntcthr keyboard, is,from gboard. Thr, defaukt nkeyds are, so tiny it is, impossible to type correctly. There is, no soellinh correction. Worst, of all, no swype key entry(excavation mork). I hate, this,app!!!" Also, the space bar can't be used to position the edit point (caret). I'm writing this with the Google keyboard, and it works so much better! Oh, and also the instructions are bad!!!
★☆☆☆☆Michael B· Dec 28, 2025
I figured out how to move the enter key but beyond that learning curve for this app is ridiculous. Plus no text prediction option.
Google Play Rankings for Custom Keyboard Designer
This app is not ranked
Technologies used by Custom Keyboard Designer
3 permissions·17 libraries
Subscribe to see full permission and library details
Trust & Safety: Trust/safety assessment: The app markets a privacy-forward experience with claims of no permissions and no data collection, which supports user privacy. However, the data also lists requested permissions (including VIBRATE and BILLING) that warrant verification. The presence of in-app purchases (EDP/EKP) is expected for pro features. Overall, the app emphasizes user control and offline operation, but potential permission discrepancies should be reviewed by users and platform checks.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
