Basal Body Temperature Calc. Downloads & RevenueBasal Body Temperature Calc. · App Store
Basal Body Temperature Calc. is #30 in Medical Paid in Japan and charting in 4 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperGianluca Natalini
CategoryMedical
Price0.99 USD
Released
Rating★ 1.3 (18)
Version1.7
Age rating17+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)1k+ worldwide
Basal Body Temperature Calc. update history & changes
Last change · 8 events since 20 Jan 2010Full timeline ↓📈Entered the top 10📈Entered the top 100🆕First spotted by AppInsider📦Version 1.7🆕Released on the App Store
Full timeline · 8 events
- 📈Basal Body Temperature Calc. entered the top 10Top Paid · Medical · FR
- 📈Basal Body Temperature Calc. entered the top 100Top Paid · Medical · US
- 📈Basal Body Temperature Calc. charting in a new countryUnited States
- 📈Basal Body Temperature Calc. charting in a new countryGermany
- 📈Basal Body Temperature Calc. charting in a new country in 2 chartsItaly · Russia
- 🆕Basal Body Temperature Calc. first spotted by AppInsider#96 in Top Paid · Medical · United Arab Emirates
- 📦Basal Body Temperature Calc. version 1.7- Minor bugs fixed
- 🆕Basal Body Temperature Calc. released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
1.3 ★
18 ratings
Measured
Best rank now
#30
Medical PaidMeasured
Basal Body Temperature Calc. on the App Store
App details
App ID
351060251
Publisher
Gianluca Natalini
On the store since
Jan 2010
16 years on the store
Minimum OS
iOS 16.6+
iPhone 8 and later
Devices
iPhone · iPad
Content rating
17+
3 content notes below
Languages
1
EN
Size
2 MB
Also listed in
Health & Fitness
Content notesFrequent/Intense Medical/Treatment InformationInfrequent/Mild Sexual Content and NudityInfrequent/Mild Mature/Suggestive Themes
Basal Body Temperature Calc. downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | MedicalPaid | #30 |
 France | MedicalPaid | #29 |
 Italy | MedicalPaid | #124 |
 Russia | MedicalPaid | #150 |
Apps near Basal Body Temperature Calc. on the chart
Medical Paid, around #30.
Ratings
App Store, worldwide.
Rating
1.3 ★
18 ratings
Measured
Ratings
18
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Medical apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Basal Body Temperature Calc.
From recent reviews.
About Basal Body Temperature Calc.
"Basal Body Temperature (BBT) Calculator" is a program that helps women in the writing, understanding and archiving (for future reference) of diagrams that illustrate the evolution over the time of their basal body temperature (measured near vaginal area upon waking, before getting out of bed). The resulting diagram is very useful for estimating the days of ovulation and may therefore be a useful tool to identify the fertile period. The available medical documentations, even on the internet, explains in greater detail the utility of managing this type of information/diagrams.
The informations computed by the BBT diagram:
- will help you to know your health, menstrual and fertile phases
- allows you to live sexuality with more serenity
With probabilistic prediction, you'll know when You can try to conceive a child or when avoid becoming pregnant.
Features:
- Daily registration of the basal body temperature values, state of health, menstrual period, the relative level of bleeding, fever, sex
- Archive an infinite number of diagrams in the years
- View the status of fertility (days with high probability of conception)
- Indication of the probability of pregnancy in cases of sex
- Prediction of the date of the new menstrual cycle
- Graphical display of the diagrams of the basal body temperature (including the information described above)
- Zoom and pan of the diagrams
- Ability to save the diagrams of the BBT in the "Photo Album"
- Ability to send the diagrams of the BBT via e-mail
BBT Scientific References and Medical Sources:
http://www.ngcybit.it/iTunesApp/basal-body-temperature-calculator/bbt-scientific-references-and-medical-sources.html
The informations computed by the BBT diagram:
- will help you to know your health, menstrual and fertile phases
- allows you to live sexuality with more serenity
With probabilistic prediction, you'll know when You can try to conceive a child or when avoid becoming pregnant.
Features:
- Daily registration of the basal body temperature values, state of health, menstrual period, the relative level of bleeding, fever, sex
- Archive an infinite number of diagrams in the years
- View the status of fertility (days with high probability of conception)
- Indication of the probability of pregnancy in cases of sex
- Prediction of the date of the new menstrual cycle
- Graphical display of the diagrams of the basal body temperature (including the information described above)
- Zoom and pan of the diagrams
- Ability to save the diagrams of the BBT in the "Photo Album"
- Ability to send the diagrams of the BBT via e-mail
BBT Scientific References and Medical Sources:
http://www.ngcybit.it/iTunesApp/basal-body-temperature-calculator/bbt-scientific-references-and-medical-sources.html
Latest updates
1.7
- Minor bugs fixed
