Analyze your OPK (ovulation) or HPT (pregnancy) test strips. Measure the intensity ratio between test and control lines, enhance faint lines with edge detection filters, and create progression images to track changes over time.

Select a photo of your OPK, HPT, or other test strip to analyze

Test Progression Image

Create a composite image showing your test progression over time. Use "Add to Progression" after measuring a test.

How to Use

Line Reader (Intensity Measure)

  1. Select a photo of your test strip
  2. Use pinch/zoom and two-finger rotation to position the test
  3. Align the test lines with the white horizontal centerline
  4. Drag the green (C) line to the Control line
  5. Drag the red (T) line to the Test line
  6. Tap "Measure" to read the intensities

Faint Line Detector

  1. Select a photo of your test strip
  2. Switch to "Faint Line Detector" mode
  3. Apply Vertical or Horizontal filters to enhance lines
  4. Use "Reset" to return to the original image

Progression Image

  1. Select and measure each test photo using the Line Reader
  2. Click "Add to Progression" after measuring
  3. Enter CD/DPO for each image (optional)
  4. Repeat for all tests in your progression
  5. Click "Generate Progression Image"
  6. Download or share the composite image

Note: Photos are processed entirely in your browser and are never uploaded to any server. No account required.