January 31, 2026|#pregnancy test line progression#line progression tracker#pregnancy test diary
Pregnancy Test Line Progression: How to Track It Without Over-Interpreting
Progression photos can be reassuring—but only if you compare correctly. Here's a safer method.
What line progression can and can't show
Line progression can show a general change over time, but it's not a medical measurement. Different brands, hydration levels, and lighting can change how dark a line appears.
The only comparison method that's fair
Use the same test brand when possible, test at similar times of day, take a photo at the instructed read time, and apply the same enhancement method each time.
How your app makes this easier
A test diary plus consistent filters is the core feature here: users can compare images side-by-side and reduce memory bias.
When to seek confirmation
If you're worried or symptoms are concerning, confirm with a healthcare professional.
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