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App Store Apps > Health & Fitness > Lean Theory
App profile & analytics · Health & Fitness · Data updated 2026-10-22
Lean Theory icon

Lean Theory

by 志伟 黄 · Free · Version 1.0
Availability On the App Store since October 2026 ↗
Rating on App Store
–
Rating
–
0 reviews
Best rank
#59
New Apps, Books, South Korea
Last updated
October 21, 2026
1.0

Lean Theory is made and published by 志伟 黄. AppBrain is an independent app data site and isn't affiliated with 志伟 黄. The app name, icon, screenshots and description belong to 志伟 黄 and are shown as published on the App Store.

About Lean Theory

Lean Theory is a health & fitness app developed by 志伟 黄.

User Ratings

The app has no ratings yet.

App Information

Lean Theory is freely available from the App Store. The app size is 1.58 MB. The latest version available is 1.0. The last update was on October 21, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since October 2026.

Description by 志伟 黄 (from the App Store)
No lean muscle? No small talk.

Lean Theory is a lightweight personal journal for workouts, meals and body photos. Record your day at your own pace.

WORKOUTS
One tap records a workout. Undo it or add optional details whenever you want.

MEAL PHOTOS
Open the camera, take a photo and save your meal. Add multiple photos each day without choosing categories or counting calories.

BODY JOURNAL
Keep progress photos, compare two moments and optionally use an earlier photo as a framing guide. Export or share body photos using the system share sheet.

PRIVATE AND SIMPLE
No account, ads or analytics. Records stay on your device. Supports English and Simplified Chinese, with optional weekly photo reminders.

Please note: there is no cloud sync or full-data backup/export. Records are excluded from system backups and may be lost if you uninstall the app or lose your device. Export important body photos separately. Lean Theory is a personal journal, not medical advice or a promise of fitness results.
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More data about Lean Theory

Price Free
Rating No ratings
Ranking Highly ranked
Version 1.0
App size 1.58 MB
Suitable for Everyone

Screenshots

Lean Theory Screenshot 1 of 1
Screenshots by 志伟 黄, from the the App Store listing
Official page on the App Store

Changelog of Lean Theory

No changelog data

Developer information for 志伟 黄

志伟 黄

Address:

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Comments on Lean Theory for iOS

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App Store Rankings for Lean Theory

Top rankings

Rank Country Category List
59 South Korea Books New Apps
59 South Korea Business New Apps
59 South Korea Education New Apps
59 South Korea Entertainment New Apps
59 South Korea Finance New Apps
59 South Korea Food & Drink New Apps
59 South Korea Games New Apps
59 South Korea Action Games New Apps
59 South Korea Adventure Games New Apps
59 South Korea Arcade Games New Apps

Ranking history in South Korea

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Technologies used by Lean Theory

Frequently asked questions about Lean Theory

Is Lean Theory free?

Yes. Lean Theory is free on the App Store.

Is Lean Theory still available?

Yes. Lean Theory is on the App Store, and the last update we saw was on October 21, 2026.

How large is Lean Theory?

Lean Theory is 1.58 MB.

Is Lean Theory suitable for children?

App Store rates the content of Lean Theory as suitable for everyone.

Who made Lean Theory?

Lean Theory was developed by 志伟 黄. It is listed in the health & fitness category on the App Store.

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