Letter Number is made and published by Ivan Gastilovic. AppBrain is an independent app data site and isn't affiliated with Ivan Gastilovic. The app name, icon, screenshots and description belong to Ivan Gastilovic and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- July 1, 2026
- Size
- 27.7 MB
User feedback
Ratings and reviews on the App StoreComments on Letter Number for iOS
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Store listing
By Ivan Gastilovic, from the App Store
Description by Ivan Gastilovic 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!
Subscriptions Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 27.7 MB
- Content rating
- Everyone
Technologies used by Letter Number
Releases
Updates seen on the App Store- Version
- 1.4
- Launched
- July 2025
No changelog data
Alternatives
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Also available on Google Play
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About the app and developer
About Letter Number
Letter Number is an education app developed by Ivan Gastilovic.
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 27.72 MB. The latest version available is 1.4. 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 the App Store since July 2025.
Developer information for Ivan Gastilovic
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