---
title: "Basal Body Temperature Calc. - Reviews, Revenue and Downloads in United States | Apple App Store"
description: ""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 th"
---

# Basal Body Temperature Calc. — United States
> Basal body temperature

![Basal Body Temperature Calc. App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/0d/34/e1/0d34e1d9-8d71-f713-2b53-242cded5702b/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.jpeg/434x0w.png)

**Developer:** [Gianluca Natalini](https://apptail.io/developer/gianluca-natalini-zpE) (Italy)
**Category:** Medical
**Rating:** 1.3/5 (18 ratings)
**Price:** Free
**Bundle ID:** com.GianlucaNataliniNGCYBIT.BasalBodyTemperatureCalculator
**Store:** Apple App Store
**Country:** United States
**Version:** 1.7 (released 2026-07-15)
**Original Release:** 2010-01-21
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id351060251)
**AppTail Page:** [https://apptail.io/app/basal-body-temperature-calc-cv/united-states](https://apptail.io/app/basal-body-temperature-calc-cv/united-states)

## Basal Body Temperature Calc. Description
"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:


## Basal Body Temperature Calc. Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ed/23/9f/ed239fa9-6e84-3ee1-bf12-5cbefcbee07d/954dc623-0538-4eaf-bf8f-028973d9a774_BBT_5_5_SS_1_EN.png/1242x2208.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/1e/7a/291e7a2a-4f56-edb9-a3f5-b68fc48adea9/0a546c90-c9e3-4c7d-adfb-91fcbab6d1bb_BBT_5_5_SS_1_IT.png/1242x2208.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3a/90/a2/3a90a2ef-a760-9ec9-d68a-109e27d20f6b/2f646304-bf70-40de-a417-5d6cb66c65c6_BBT_5_5_SS_2.png/1242x2208.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/95/55/28/955528c2-021e-f162-f0cc-68b94e050ba1/0332fe9e-45d5-439f-8fc8-5944a4f682d5_BBT_5_5_SS_3.png/1242x2208.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c4/89/c9/c489c9e6-a47f-ca6c-7169-2edd50e5d910/349223ae-f9e6-4881-af85-bd484d64f1a9_BBT_5_5_SS_4.png/1242x2208.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/08/8d/84/088d84b3-a853-5c33-3975-c147323f318f/d559950c-c64a-41fb-877f-897bffc7afc3_BBT_5_5_SS_5.png/1242x2208.png)

## Basal Body Temperature Calc. Rating Breakdown in United States
- 5 stars: 0 (0%)
- 4 stars: 1 (6%)
- 3 stars: 0 (0%)
- 2 stars: 2 (11%)
- 1 stars: 15 (83%)

## Basal Body Temperature Calc. Reviews in United States

### **--- "Really inflexible app"
I thought this app would be a lot more flexible than it is. I don't care that it's in Celsius, but I wish you could skip a day (it does not let you do so). I also really hate apps that assume all women ovulate on day 14 and menstruate on day 28. If I knew I was going to ovulate on day 14, I wouldn't need this app! It's not ideal for women with irregular cycles.
-- GrumpyReporter, 2010-02-15

### *---- "Temps only in Celsius "
Seriously? I have to open a conversion program just to figure out what temp to enter since I have to convert from fahrenheit to Celsius for it to even let me enter a temp.  I would have expected something that simple even in a free app.  It certainly was not worth the $2 I paid.  Also there is no explanation of what the symbols and lines mean on the graph, no way to change the predicted fertile phase or ovulation date, and the website listed doesn't work.
-- Biopsy, 2010-02-10

[View all Basal Body Temperature Calc. reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Basal Body Temperature Calc. Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Belarus | Medical | #48 |
| Top Paid | Azerbaijan | Medical | #76 |
| Top Paid | Singapore | Medical | #82 |
| Top Paid | Taiwan | Medical | #92 |
| Top Paid | Czechia | Medical | #92 |
| Top Paid | Hong Kong SAR China | Medical | #106 |
| Top Paid | Italy | Medical | #114 |
| Top Paid | Malaysia | Medical | #133 |
| Top Paid | Russia | Medical | #146 |
| Top Paid | Switzerland | Medical | #147 |
| Top Paid | Austria | Medical | #153 |
| Top Paid | Ireland | Medical | #172 |
| Top Paid | France | Medical | #176 |
| Top Paid | Dominican Republic | Medical | #191 |
| Top Paid | United Arab Emirates | Medical | #192 |
| Top Paid | Germany | Medical | #195 |
| Top Paid | Norway | Medical | #204 |
| Top Paid | New Zealand | Medical | #209 |
| Top Paid | Japan | Medical | #211 |
| Top Paid | India | Medical | #218 |
| Top Paid | Australia | Medical | #222 |
| Top Paid | South Africa | Medical | #225 |
| Top Paid | Sweden | Medical | #226 |
| Top Paid | Greece | Medical | #234 |

## Basal Body Temperature Calc. Discovered Keywords
- basal body temperature tracker

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## Basal Body Temperature Calc. Available In
- [United States](https://apptail.io/app/basal-body-temperature-calc-cv/united-states)
- [Canada](https://apptail.io/app/basal-body-temperature-calc-cv/canada)
- [Switzerland](https://apptail.io/app/basal-body-temperature-calc-cv/switzerland)
- [Australia](https://apptail.io/app/basal-body-temperature-calc-cv/australia)
- [United Kingdom](https://apptail.io/app/basal-body-temperature-calc-cv/united-kingdom)
- [Austria](https://apptail.io/app/basal-body-temperature-calc-cv/austria)
- [China](https://apptail.io/app/basal-body-temperature-calc-cv/china)
- [Taiwan](https://apptail.io/app/basal-body-temperature-calc-cv/taiwan)
- [Italy](https://apptail.io/app/basal-body-temperature-calc-cv/italy)
- [Germany](https://apptail.io/app/basal-body-temperature-calc-cv/germany)
- [Colombia](https://apptail.io/app/basal-body-temperature-calc-cv/colombia)
- [Czechia](https://apptail.io/app/basal-body-temperature-calc-cv/czechia)
- [Denmark](https://apptail.io/app/basal-body-temperature-calc-cv/denmark)
- [Dominican Republic](https://apptail.io/app/basal-body-temperature-calc-cv/dominican-republic)
- [Algeria](https://apptail.io/app/basal-body-temperature-calc-cv/algeria)
- [Ecuador](https://apptail.io/app/basal-body-temperature-calc-cv/ecuador)
- [Estonia](https://apptail.io/app/basal-body-temperature-calc-cv/estonia)
- [Egypt](https://apptail.io/app/basal-body-temperature-calc-cv/egypt)
- [Spain](https://apptail.io/app/basal-body-temperature-calc-cv/spain)
- [Finland](https://apptail.io/app/basal-body-temperature-calc-cv/finland)
- [Greece](https://apptail.io/app/basal-body-temperature-calc-cv/greece)
- [Hong Kong SAR China](https://apptail.io/app/basal-body-temperature-calc-cv/hong-kong)
- [Hungary](https://apptail.io/app/basal-body-temperature-calc-cv/hungary)
- [Indonesia](https://apptail.io/app/basal-body-temperature-calc-cv/indonesia)
- [Ireland](https://apptail.io/app/basal-body-temperature-calc-cv/ireland)
- [Israel](https://apptail.io/app/basal-body-temperature-calc-cv/israel)
- [India](https://apptail.io/app/basal-body-temperature-calc-cv/india)
- [Japan](https://apptail.io/app/basal-body-temperature-calc-cv/japan)
- [South Korea](https://apptail.io/app/basal-body-temperature-calc-cv/south-korea)
- [Kuwait](https://apptail.io/app/basal-body-temperature-calc-cv/kuwait)
- [Kazakhstan](https://apptail.io/app/basal-body-temperature-calc-cv/kazakhstan)
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- [Madagascar](https://apptail.io/app/basal-body-temperature-calc-cv/madagascar)
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- [Mexico](https://apptail.io/app/basal-body-temperature-calc-cv/mexico)
- [Malaysia](https://apptail.io/app/basal-body-temperature-calc-cv/malaysia)
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- [Netherlands](https://apptail.io/app/basal-body-temperature-calc-cv/netherlands)
- [Norway](https://apptail.io/app/basal-body-temperature-calc-cv/norway)
- [Nepal](https://apptail.io/app/basal-body-temperature-calc-cv/nepal)
- [New Zealand](https://apptail.io/app/basal-body-temperature-calc-cv/new-zealand)
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- [Philippines](https://apptail.io/app/basal-body-temperature-calc-cv/philippines)
- [Pakistan](https://apptail.io/app/basal-body-temperature-calc-cv/pakistan)
- [Poland](https://apptail.io/app/basal-body-temperature-calc-cv/poland)
- [Portugal](https://apptail.io/app/basal-body-temperature-calc-cv/portugal)
- [Romania](https://apptail.io/app/basal-body-temperature-calc-cv/romania)
- [Russia](https://apptail.io/app/basal-body-temperature-calc-cv/russia)
- [Saudi Arabia](https://apptail.io/app/basal-body-temperature-calc-cv/saudi-arabia)
- [Sweden](https://apptail.io/app/basal-body-temperature-calc-cv/sweden)
- [Singapore](https://apptail.io/app/basal-body-temperature-calc-cv/singapore)
- [Slovenia](https://apptail.io/app/basal-body-temperature-calc-cv/slovenia)
- [Slovakia](https://apptail.io/app/basal-body-temperature-calc-cv/slovakia)
- [Senegal](https://apptail.io/app/basal-body-temperature-calc-cv/senegal)
- [Thailand](https://apptail.io/app/basal-body-temperature-calc-cv/thailand)
- [Türkiye](https://apptail.io/app/basal-body-temperature-calc-cv/turkey)
- [South Africa](https://apptail.io/app/basal-body-temperature-calc-cv/south-africa)
- [Argentina](https://apptail.io/app/basal-body-temperature-calc-cv/argentina)
- [Azerbaijan](https://apptail.io/app/basal-body-temperature-calc-cv/azerbaijan)
- [Belgium](https://apptail.io/app/basal-body-temperature-calc-cv/belgium)
- [Bulgaria](https://apptail.io/app/basal-body-temperature-calc-cv/bulgaria)
- [Bahrain](https://apptail.io/app/basal-body-temperature-calc-cv/bahrain)
- [Brunei](https://apptail.io/app/basal-body-temperature-calc-cv/brunei)
- [Brazil](https://apptail.io/app/basal-body-temperature-calc-cv/brazil)
- [Belarus](https://apptail.io/app/basal-body-temperature-calc-cv/belarus)
- [Chile](https://apptail.io/app/basal-body-temperature-calc-cv/chile)
- [Vietnam](https://apptail.io/app/basal-body-temperature-calc-cv/vietnam)
- [United Arab Emirates](https://apptail.io/app/basal-body-temperature-calc-cv/united-arab-emirates)
- [Ukraine](https://apptail.io/app/basal-body-temperature-calc-cv/ukraine)
- [Uzbekistan](https://apptail.io/app/basal-body-temperature-calc-cv/uzbekistan)
- [Sri Lanka](https://apptail.io/app/basal-body-temperature-calc-cv/sri-lanka)
- [France](https://apptail.io/app/basal-body-temperature-calc-cv/france)

---

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