MainLine: Chess Trainer

Name: MainLine: Chess Trainer
Author: BunnyHops

LiveBunnyHops1 app · 2K installsEducationFree · contains adsIn-app purchases: $7.99 - $69.99 per itemcom.benjamin.mainline

Spaced repetition chess trainer for tactics, endgames, and pattern recall.

Alert me ★ Watch Open in Play ↗

Total installs: 1,975
Installs / day: 0
Rating: —★
Released: 7 Apr 2026
Last update: 22 Aug 2026
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

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

No data shared with third parties
Collects data Location, App activity, and Device or other IDs
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

13 in 3 groups

5 Sensitive3 Notable5 Routine

What this app can do with your phone

Read photos, videos, and other files saved in your phone's shared storage
Add, change or delete photos, videos and other files in your phone's storage
Show its own windows or bubbles on top of other apps you are using

Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

StorageSensitive2

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

OtherSensitive9

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

Show its own windows or bubbles on top of other apps you are usingdraw over other apps · SYSTEM_ALERT_WINDOW
Change volume and choose which speaker or headset plays soundchange your audio settings · MODIFY_AUDIO_SETTINGS
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
Make your phone vibratecontrol vibration · VIBRATE
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
Receive push messages sent from the app's servers over the internetreceive data from Internet · com.google.android.c2dm.permission.RECEIVE

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

Full description

MainLine is a chess trainer built to improve pattern recognition. It uses spaced repetition to help you remember tactics, endgames, and ideas from your own games, so study turns into usable over-the-board recall. Train smarter with MainLine: - Game-based drills built from your Chess.com and Lichess history - Spaced repetition that resurfaces patterns before you forget them - Interactive practice for tactics, endgames, puzzle themes, and key lines - Quick daily sessions, streak reminders, and progress tracking - Daily puzzles to challenge yourself Instead of passively reviewing positions, MainLine helps you actively remember them. Review mistakes, revisit patterns, and build stronger chess instincts one session at a time. Install MainLine and make your study stick.

What's new

Learn chess with custom lesson plans, grow your repertoire with key puzzles, and master them with space repetition!

Growing in Education

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