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19
BU Score
Niche

Basal Body Temperature Calc.

1.3 ✍️ Editor
✍️ bumetric analysis

Basal Body Temperature Calc. is an iOS app from Gianluca Natalini in the Education category, currently rated 1.3★ across 18 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.

Our BU Score puts it at 19: Niche (micro-niche or pre-traction stage). For a Education app, that means micro-niche or pre-traction stage.

Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
Below-average rating (1.3★)METRIC
−$1,500
Mature app (16y old)METRIC
+$1,500
Single-language (English only)METRIC
−$400
Pre-traction phase (18 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 2 MB🔞 17+📱 iOS 15.0+🔖 v1.6🔄 updated 4y ago🌐 EN📂 Education💰 Paid🚀 Launched 2010 (16y old)

📝 About this app

"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

🆕 What's New · v1.6

- Minor bugs fixed

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Basal Body Temperature Calc.
Developer
Gianluca Natalini
Bundle ID
com.GianlucaNataliniNGCYBIT.BasalBodyTemperatureCalculator
App Store URL
Open in App Store
Category
Education
Content rating
17+
Languages
EN

Company

Website
www.ngcybit.it
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$86/mo
Top-grossing rank
Outside top 99 in US Education
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth18 ratings+1700% lifetimeShow 3-year history estimate ▾Feb 2010Nov 2024May 2026
Tracked (3 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.

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Full revenue analysis
Read the article-style breakdown for Basal Body Temperature Calc.: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Read deep-dive →