Fertility Test Analyzer (FTA) is an Android app developed by Colnix Technology that helps women interpret ovulation and pregnancy test strips.

It may be the best free and open source fertility app to help you interpret both pregnancy and ovulation test strips by giving you the % of pigmentation. It provides you with fertility charts based on your hormone levels, so you can pinpoint your fertile window and track your early pregnancy days.

Fertility Test Analyzer helps you get pregnant, especially if you have PCOS or irregular periods when ordinary ovulation calendars and trackers are not so helpful. It also makes you save money!

You can buy cheap test strips in bulk knowing that you will be confident about the results once and for all!

Fertility Test Analyzer reads pregnancy and ovulation test strips, interprets their results and shows them in an easy and understandable way.

Be reassured when reading the pigmentation level of an ovulation test or seeing a very faint line on a pregnancy test. Find out that you are pregnant before a missed period using the most sensitive tests in combination with our app.

Feature highlights

  1. Read pregnancy and ovulation test strips without any doubts.
  2. Detect ovulation based on your hormone levels.
  3. Predict your fertile window.
  4. Improve your chances of pregnancy by better timing intercourse.
  5. Check on your pregnancy initial days following your hCG evolution with its fertility charts.
  6. Access your data offline and review it when Internet access is not available.
  7. Keep pictures of your tests safely saved in your mobile phone.


Fertility Test Analyzer transforms qualitative data, given by the pregnancy and ovulation test strips, into quantitative data (% pigmentation).

The accuracy of the numeric value is affected by a number of factors, such as: test quality, how diluted the urine is, the quality of the camera used, your skills in taking a good picture and a correct lighting. Hence, numeric results obtained cannot be taken as exact values, only a laboratory can give those.

Use at your own risk. Do not use it to avoid pregnancy or anything where more accuracy would be required. Please consult your healthcare provider for any health concern.


The app and source code is released under the Apache License 2.0.


  1. Source code
  2. Download from F-Droid
  3. Website