One of the first steps many women take when starting their charting journey is downloading a period app. However, not all apps are created equal. A quick search in the app store comes up with dozens of apps. Sadly, very few of them are suitable for those using NFP or FAM. Most are just forms of the rhythm method, an unreliable from of birth control that comes up with predictions based on past cycles. My review only includes apps that allow women to track cervical mucus and basal body temperature–the two main signs in SymptoThermal Methods. I also tried to only pick apps that allowed self-interpretation. Learning how to interpret your own fertility signs is vitally important when charting.
1. Kindara

Available on Android and iPhone.
Perk: The iPhone version allows users to share their whole chart.
Con: The Android version is known to be considerably more glitchy than the iPhone version. On Android, users can select “Share This Chart” and “With Community” to access a screen where they may screenshot their own chart.
Cost
Perk: Free Version Available
Con: Vaginal Sensation and more than four categories are extra. Premium version is $4.99 USD/month or $49.99 USD/year
SymptoThermal Rules Interpretation
Perk: I don’t know if Kindara has a monopoly on self-interpretation or what, but it’s one of the only apps to allow users to interpret and mark their own peak day and temperature shift. It also lets users mark their own coverline. This means that Kindara is good for those using a method like Taking Charge of Your Fertility (which has a higher coverline) and those using Sensiplan (which has a lower coverline). Lastly, Kindara has a very easy to read, clear chart. This is so important for users, and for those helping them.
Predictions
Kindara also does not predict fertile windows unless the user is trying to conceive (I recommend ignoring these even if trying to conceive. It is always best to do your own interpretations or ask an instructor if uncertain). It will predict menstruation based on average luteal phase length once it has enough data.
Other Features:
- Users may share charts and get feedback from the community
- Counts days past ovulation when shift is marked
- Cervix Tracking (Height, Openness,Firmness)
- Sex Tracking (Protected, Unprotected, Withdrawal, Insemination
- OPK and Pregnancy Tests Tracking
- Journal Available
- Pairs with Wink Thermometer (syncs with the app via Bluetooth)
- Emojis can be used in custom data
2. Fertility Friend

Available on Android and iPhone
Pro: Fertility Friend appears to work equally well on Android and iPhone
Cost
Pro: Free, paying is not necessary to be able to chart.
Con: VIP membership available starting at $9.99/month. This is a little expensive. The community sharing feature is only available to those who pay.
SymptoThermal Rules Interpretation
Perk: Coverline can be overridden under settings. There are options to chart cervical mucus and temperatures.
Con: The app automatically interprets. For new users, this may be confusing.
Predictions
Fertility Friend does predict fertile windows, period days, ovulation days, and a recommended test day for pregnancy. As always, users should rely on their own interpretations and get help from an instructor if needed.
Other Features:
- Cervix Tracking (Height, Openness, Firmness)
- Pregnancy and OPK tracking
- Ton of Options for Mood, Health, Diet
- Options for IVF, A.R.T., and Fertility Medication Tracking
- Weight Data
- Lightbox (With VIP compare photos of OPK and HPT tests)
- Chart Overlay (Compare multiple cycles on one chart)
- Sex Tracking (no option to differentiate unprotected versus protected)
3. OvuView

Available on Android Only
Con: Pretty much the fact that it isn’t available on Apple products
Cost
Perk: Free (but with ads). One time payment of $4.99 to remove all ads. This is the cheapest app with the most features for custom tracking.
SymptoThermal Rules Interpretation
Perk: You can pick from multiple methods. Users may turn methods on and off.
Con: No self interpretation available. I have included it because unlike any other app that I have come across that interprets for users, the methods can be turned off. Users may play around with the methods to see if they can mark their chart according to their method’s rules. Turning off all settings would leave a chart for the user to interpret themselves even though they can’t self-mark. Another con is that the temperature scale is very hard to read. Make sure to round or drop your temps. Ovuview may not always do this correctly.
Predictions
Ovuview predicts future fertile windows, ovulation days, and periods. Users should ignore this in favor of self-interpretation.
Other Features:
- A ton of custom tracking like medications, moods, weight, etc.
- Syncs with the Tempdrop device (This is wearable BBT. My review is coming soon. Full disclosure: this link earns me ten dollars if you use it to purchase the device)
- Cool design. Users can choose their own chart colors, background, custom data colors, etc.
- Cervix Tracking (Position, Opening, Texture)
- OPK and Pregnancy Test Tracking
- Fertility Monitor Tracking (None, Low, High, Peak)
- Sex Tracking
Conclusion
There are limited options for self-interpretation when it comes to FAM apps. The three apps above are the best I’ve found when it comes to self-marking.
Look out for my next blog on how to chart using Google Sheets. I’ll be creating a Youtube video on how to do this yourself. This method of charting allows self-interpretation, custom data tracking, and users can chart on their computer or phone.
Google Sheets


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