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Health & Fitness · iPhone · iPhone Duo · iPad · Android

LineCheck

On-device AI reads pregnancy and ovulation tests

Luna Check uses AI models built into your phone to read faint pregnancy test lines and LH ovulation strips. Your test photos stay on-device, with no server upload.

Screenshots

LineCheck on iPhone.

About

About LineCheck.

Luna Check uses LineCheck’s own trained AI models on your iPhone, iPhone Duo, iPad or Android phone to read hCG pregnancy and LH ovulation tests. It checks visible test and control lines and reviews LH line ratios entirely on your device, without uploading your test photos to a server. Rechecks also run on-device. Save your test photos, compare faint lines side by side and follow changes over time. Cycle tracking, calendars and pregnancy tools keep the rest of your journey together. LineCheck is free to download, with an optional Pro upgrade. LineCheck is not a medical device and does not diagnose pregnancy, fertility status or health conditions; follow your test instructions and consult a healthcare professional when needed.

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Luna Check uses built-in AI models to read photos on your device

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Read hCG pregnancy test lines without a photo upload

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Read LH ovulation strips and follow test-to-control line ratios

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Faint line detection with read confidence

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Saved scan history for pregnancy and ovulation tests

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Side-by-side comparison for earlier and later results

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Calendar view for tests, cycle timing, and windows

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LH trend charts to watch surge patterns over time

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Optional Luna guidance alongside your saved test history

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Clear reference-only medical disclaimer

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Available on iPhone, iPhone Duo, iPad and Android

FAQ

LineCheck questions.

How does LineCheck read pregnancy and ovulation tests?

Luna Check uses LineCheck’s own trained AI models on your phone. It checks the test and control lines in a photo of an hCG pregnancy or LH ovulation line test, without sending the photo to a server.

Are my test photos uploaded for scanning?

No. Luna Check reads the photo entirely on your device and does not upload it to a server. Rechecks also use the on-device AI models. Optional Luna chat and written guidance use relevant text and result context, not the test photo.

Does it help with faint lines?

Yes. LineCheck reviews test photos, highlights possible faint lines, and shows read confidence.

Can I compare results over time?

Yes. Save pregnancy and ovulation test photos, compare earlier and later tests side by side, and follow LH ratios in your history and charts.

Is LineCheck free to download?

Yes. LineCheck is free to download, with optional LineCheck Pro purchases for extra features. It is for reference only and cannot confirm pregnancy or ovulation.

Is LineCheck available on Android?

Yes. LineCheck is on Google Play for Android 8.0 or later, and on the App Store for iPhone, iPhone Duo and iPad. Records and LineCheck Pro purchases do not carry over between iPhone and Android.

Download

Get LineCheck.

LineCheck is available on the App Store and Google Play.