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App · Checked October 15, 2026
Premom
A free ovulation and period app that reads photos of LH strips, with optional paid kits and membership.
Best forPhotographing LH strips and keeping them on one cycle chart.
Who it's for
People who already use ovulation strips and want a free app to read the photos.
Premom says you can log periods, basal temperature, and ovulation-test photos on one chart, and that a pregnancy mode is included. Photo-reading a strip can be wrong if the lighting or timing is off. A line on a strip is not proof you ovulated. The company also sells tests and a paid membership.
Pros
Premom calls the app free, with periods, temperature, and test photos on one chart.
A pregnancy mode is included.
Cons
Test kits and a premium membership cost extra.
A photo of a strip can be wrong in bad light, and a line is not proof you ovulated.
