Android · Google Play · Classroom offline

Balance the square
before you fill
the pail.

RationSquare Feed Lab is a pocket workshop for feed-mixing mathematics. Drop feeds on a live board and watch CP, TDN, fiber, and Ca:P chips update with deficit and surplus cues — then teach the classic Pearson square.

Get support Privacy policy

Four desks. One feed yard.

The same forage-green and grain-gold workshop you see in the app: Yard for rations, Board for mixing, Cabinet for ingredients, Lab for Pearson and scenarios.

Yard

Browse saved rations by species, open a card, and share a text ration sheet through the system share sheet.

Board

Drop feeds, snap to grid, swap an ingredient, and scale the mix into pail-ready batch weights.

Cabinet

80+ seeded ingredients with classroom nutrient chips — hay, grain, mineral, and leftover notes.

Lab

Pearson studio, fix-the-ration scenarios, mineral desk, animal presets, and a daily educational season tip.

Presets for the animals you teach

Goat, sheep, beef, dairy, and rabbit starting points — then you own the board. Nutrient values are seeded for classroom balancing.

PresetGoat

PresetSheep

PresetBeef

PresetDairy

PresetRabbit

Built like a club notebook

No account. Feed libraries, rations, scenarios, and preferences stay on the device (Room + DataStore). Optional season-tip notifications are local. The home-screen widget shows educational tips only.

Honest about the pail

Educational tool only — not veterinary or nutritional advice for clinical decisions. Seeded values may differ from laboratory assays. Verify mixes with an instructor or qualified professional before feeding animals.

Support

Questions about RationSquare Feed Lab on Google Play? Write the publisher. We read notes about the Pearson studio, the live board, cabinet ingredients, and season tips.

Where are my rations stored?

On this device only. We do not upload ration boards. Uninstalling or clearing app storage removes the yard, cabinet notes you added, and preferences.

How do I show metric equivalents?

Open Settings and switch on Show metric equivalents. Default species (Goat, Sheep, Beef, Dairy, Rabbit) and grid snap live in the same screen.

Can I share a ration card?

Yes. Share sends a text card through the Android share sheet you choose. We do not host that card on a server.

Why did I see a season tip?

Optional local notifications (WorkManager) and the Glance widget show educational feed-balancing tips. You can deny notification permission; the board still works offline.

The Ca:P chip looks alarming.

Deficit and surplus cues are classroom signals from seeded tables, not a lab report. Check the mineral desk and your instructor’s sheet. Email a screenshot plus species and feeds if something looks broken.

Publisher contact

Account holder: DANYLOV DEV KOSTIANTYN

Official support channel for RationSquare Feed Lab (Android / Google Play).

lazenbyrauschmayrsl19985@gmail.com

Please include device model, Android version, and what you expected versus what you saw. We aim to reply within a few business days.

Write support

Privacy policy

Effective 21 August 2026 · Last updated 21 August 2026 · Applies to RationSquare Feed Lab on Google Play (Android). The same policy is intended for any later iOS listing of the same product.

This policy explains how DANYLOV DEV KOSTIANTYN (“we”, “publisher”) handles information in RationSquare Feed Lab (package com.lazenbyrauschmayrsl.rationsquarefeedlab).

1. Who we are

The Google Play account holder and data controller for this app is DANYLOV DEV KOSTIANTYN. Contact: lazenbyrauschmayrsl19985@gmail.com.

2. What we collect

RationSquare Feed Lab keeps feed libraries, rations, scenarios, and preferences on your device (Room + DataStore). We do not require an account and do not upload ration boards.

On-device information may include:

Ration boards, ingredient placements, swap notes, and batch scale factors.
Preferences: metric equivalents, default species, grid snap, appearance, onboarding.
Text you choose to share as a ration card.

The home-screen Glance widget shows educational tips only. It does not send your yard to us.

Google Play and Android may process install, crash, or device statistics under Google’s policies when you use Play. That processing is by Google, not by a publisher server we run.

If Android Auto Backup is enabled, the system may include app data in the user’s backup. We do not receive a copy of that backup.

Classroom clubs should follow their own advisor’s data policy for student devices.

3. How on-device data is used

To compute educational Pearson-square and board-balance math.
To keep your yard, cabinet, and scenario progress.
To schedule optional local season-tip notifications (WorkManager).
To refresh the widget with a local educational tip.
To build a shareable ration card when you tap Share.

4. Permissions

Notifications (POST_NOTIFICATIONS). Optional season tips. You may refuse or later disable them. The lab still works.

Sharing a ration card uses the Android share sheet you choose. That destination’s privacy rules then apply. We do not intercept that transfer on a publisher server.

6. Retention and deletion

On-device data remains until you delete a ration, clear app storage, or uninstall. To remove support email we hold, write us and we will delete correspondence that is no longer needed for a support thread, subject to any legal retention duty.

7. Children

The app is an educational workshop often used in 4-H and FFA settings. It is not directed at children under 13 for data collection. We do not operate accounts. If a minor wrote to us by email, a parent or advisor may contact us and we will delete that mail.

8. Your choices

Use the app without an account.
Deny notification permission.
Delete rations, or clear storage / uninstall.
Email us about support mail we received.

Depending on your country or state, you may have rights to access, correct, or delete personal information. Because we do not run a user-account backend, most in-app data is only on your device — you control it there.

9. Terms of use (short)

RationSquare Feed Lab is an educational workshop for 4-H, FFA, and homestead learning. It is not veterinary advice, a medical device, or a substitute for licensed nutrition consulting. Nutrient values are seeded for classroom balancing and may differ from laboratory assays. You are responsible for verifying mixes with instructors or qualified professionals before feeding animals. By using the app you agree to use it for learning and demonstration purposes.

If the app later adds network features or a new store listing, we will update this page and the “Last updated” date.

10. Contact

DANYLOV DEV KOSTIANTYN
Publisher of RationSquare Feed Lab
Email: lazenbyrauschmayrsl19985@gmail.com

This page is the official marketing site, support URL, and privacy policy URL for store listings of RationSquare Feed Lab.