Letter Number is made and published by Ivan Gast. AppBrain is an independent app data site and isn't affiliated with Ivan Gast. The app name, icon, screenshots and description belong to Ivan Gast and are shown as published on Google Play.
AppBrain's verdict
Niche- Installs
- 26
- Last updated
- July 1, 2026
- Ads
- Contains ads
- Size
- 18.6 MB
Letter Number is a niche app, with 26 installs. It doesn't have enough ratings yet to judge what users think.
User feedback
Ratings and reviews on Google PlayComments on Letter Number for Android
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Store listing
By Ivan Gast, from Google Play“Fun game for improving attention, concentration and problem solving skills”
Description by Ivan Gast Written by the developer, not by AppBrain. Click to read.
Letter Number is a fast, challenging game designed for players with sharp minds and top-tier concentration. It may seem simple at first—but mastering it takes serious mental agility!
How to Play:
A number and a letter appear together in a yellow box.
Your task? Decide based on the current prompt:
- Is the number even or odd?
- Is the letter a vowel or a consonant?
But here’s the twist:
The focus keeps switching between numbers and letters—forcing your brain to adapt in real time.
And as you give more correct answers:
- Time gets shorter
- The pace gets faster
- The challenge gets tougher!
Why You’ll Love It:
- Builds extreme focus and mental flexibility
- Trains both logic and reaction speed
- A true test of concentration under pressure
- Fun, addictive, and endlessly replayable
Stick with it, and you’ll uncover hidden powers of focus you never knew you had.
Thanks for playing and supporting Letter Number — now let’s see how far your mind can go!
Recent changes:
Fix translation errors
Add history page
Safety and technology
Found in the app by AppBrain- Ads
- Contains ads
- Price
- Free
- Libraries
- ?
- App size
- 18.6 MB
- Content rating
- Everyone
Technologies used by Letter Number
Releases
Updates seen on Google Play- Version
- 1.0.1
- Launched
- June 2025
Alternatives
Similar apps and more from Ivan Gast
Installs
Tracked by AppBrain- Last 30 days
- 0
- Play install range
- 10+
- Launched
- June 2025
Installs over time
Letter Number has been installed 26 times. Over the past 30 days, it has been installed 0 times.
Rankings
Google Play top chartsGoogle Play Rankings for Letter Number
About the app and developer
About Letter Number
Letter Number is an educational app developed by Ivan Gast.
How many times has Letter Number been installed?
Letter Number has been installed 26 times. In the last 30 days, the app was installed 0 times.
What is the rating of Letter Number?
Letter Number has no ratings yet.
Is Letter Number free?
Letter Number is free. The app size is 18.58 MB. The latest version available is 1.0.1. The last update was on July 1, 2026.
What are the requirements for Letter Number?
The app has a content rating of Everyone. The app has been available on Google Play since June 2025.
App Performance Report
Get a detailed PDF report for Letter Number with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Ivan Gast
Frequently asked questions about Letter Number
Is Letter Number free?
Yes. Letter Number is free on Google Play.
Is Letter Number still available?
Yes. Letter Number is on Google Play, and the last update we saw was on July 1, 2026.
Does Letter Number contain ads?
Yes. Google Play lists Letter Number as containing ads.
How large is Letter Number?
Letter Number is 18.58 MB.
Is Letter Number suitable for children?
Google Play rates the content of Letter Number as suitable for everyone.
How many times has Letter Number been installed?
Google Play lists 10+ installs for Letter Number.
Who made Letter Number?
Letter Number was developed by Ivan Gast. It is listed in the educational category on Google Play.
What are the best alternatives to Letter Number?
People looking at Letter Number also look at these educational apps: Countdown Numbers & Letters 2, Vowel Please! - Countdown Game, Infinite Mind: Focus Games, Guess the Word: 5 Letter Word, ABC 123 Learn French for Kids.