Flex Lab 可動域メジャー

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Everyone
10+
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About this app

■ Visualize your flexibility "angles" simply by taking a picture with your camera

Flex Lab Range of Motion Measure is an app that uses AI to estimate and record your body angles from your posture captured with your smartphone camera. You can now see the "increase in flexibility"—such as leg splits, pelvic tilt, and middle splits—which were previously only understood through feel, in numerical values ​​and graphs.

■ For those who:
・Want to see the results of their stretching and split exercises in numbers
・Want to maintain motivation for daily flexibility training
・Want to manage their range of motion in yoga, ballet, rhythmic gymnastics, gymnastics, martial arts, etc.
・Want to record and present their clients' progress

■ Main Features
・AI-powered estimation of floor split angle (free, unlimited uses)
・Automatically saves measurement results and displays changes in a progress graph
・Displays best records and consecutive records to keep you motivated
・Self-timer (up to 60 seconds) allows you to take photos even when alone
・Burns the date into the image and saves it to the album
・All data is saved on the device (not sent to our server)

■ Trainer Plan (One-time purchase)
・Unlocks measurement of pelvic angle, middle split, and forward arm raise
・Records measurements for each client and presents changes in client-specific graphs
・Manages names, notes, and measurements on the device (no cloud usage)
・Supports data backup/restore
・No additional charges after one purchase

■ Privacy
All measurements are taken on the device. We will not send any photos or customer information you take to our servers. Account registration is not required.

■ Please Note
• The displayed angle is an AI estimate and does not guarantee accurate measurement.
• This app is not a medical device and is not intended for diagnosis or treatment.
• Estimation accuracy varies depending on the shooting environment (brightness, angle, clothing).
• When registering another person's information in the Trainer Plan, please be sure to obtain their consent before use.
Simply take a picture with your camera. The AI ​​will estimate the angles of your leg splits, pelvis, and flexibility, and record the changes in a graph.
Updated on
Sep 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Financial info
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

・腕の前方挙上の測定を追加(トレーナープラン)
・セルフタイマーを10秒・30秒・60秒に延長
・骨盤角度で背中の丸まりを補正できるように
・ホーム画面と結果画面の表示を整理
・撮り直し後にカメラが起動しない問題を修正
・一部の写真が読み込めない問題を修正
Content rating
Everyone
In-App Purchases
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App support

About the developer
FLEX LAB
mail@flexlab.jp
605-8, YAYOIGAOKA, TEMPAKU-KU NAGOYA, 愛知県 468-0062 Japan
+81 80-6011-5021