Letter Number

Name: Letter Number
Author: Ivan Gast

LiveIvan Gast15 apps · 2.3K installsEducationalFree · contains adsIn-app purchases: $0.99 - $9.99 per itemcom.spaceapps.letternumber

Fun game for improving attention, concentration and problem solving skills

Alert me ★ Watch Open in Play ↗

Total installs: 26
Installs / day: 0
Rating: —★
Released: 8 Jun 2025
Last update: 1 Jul 2026
Countries: —

Installs per day

gain of the exact counter

12 Oct 2026No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 11 Oct 2026 · history grows every day

Install history

exact counter from Google Play

1dAll

Dashed: estimate from the release date (no daily data before 11 Oct 2026) · time axis compressed before that day

Daily tracking since 11 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

Shares data with third parties Device or other IDs
No data collected
Data is encrypted in transit

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

5 in 1 group

0 Sensitive2 Notable3 Routine

OtherNotable5

Access to miscellaneous device features that don't fit other categories

Start itself automatically as soon as your phone finishes turning onrun at startup · RECEIVE_BOOT_COMPLETED
Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE

Read more · all 5 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

Unlock Your Focus with Letter Number! 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!

What's new

Fix translation errors Add history page

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