57
BU Score
Solid
My Days - Ovulation Calendar &
✍️ bumetric analysis
“
My Days - Ovulation Calendar & is an Android app from Christian Albert Mueller. in the Health & Fitness category, currently rated 2.8★ across 90,116 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Our BU Score puts it at 57: Solid (established niche player). For a Health & Fitness app, that means established niche player.
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
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Reviews
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Forecast Revenue / mo
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Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue 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 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (90,116 ratings)METRIC | +$5,500 | |
| Below-average rating (2.8★)METRIC | −$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 vVaries with device📂 Health & Fitness💰 Free
📝 About this app
The Original: My Days - Ovulation Calendar & Period Tracker ™
Track & predict your period, ovulation and fertility.
Menstrual calendar for women of all ages.
Features include:
⦿ Calendar
⦿ Password
⦿ Notification for upcoming Period & Ovulation
⦿ Multi-user support
⦿ Multiple languages (en, de, it, es, fr, cn, tw)
⦿ Add personal info regarding birth control, notes, intercourse, pills
⦿ eMail history to yourself or your doctor
⦿ Backup
⦿ Basal metabolic temperature (BMT) chart
⦿ 4 Widgets
⦿ Customizable colors
MyDays is a perfect and easy-to-use ovulation calendar & period tracker for every woman.
MyDays is also great for men who care for their partner's cycle.
Please feel free to send me an email with any concerns, problems or suggestions: androchris @gmail.com.
I will answer all your questions ASAP.
Info about Permissions:
Internet Access: To enable "Web based Community Chat"
Call Status: To disable Ads while Calling
Shortcuts: To allow shortcuts only after you request one.
Bookmarks: See Shortcuts
Location: To power Intelligent Reminders and to personalize advertisements in the free version.
Thank you
Track & predict your period, ovulation and fertility.
Menstrual calendar for women of all ages.
Features include:
⦿ Calendar
⦿ Password
⦿ Notification for upcoming Period & Ovulation
⦿ Multi-user support
⦿ Multiple languages (en, de, it, es, fr, cn, tw)
⦿ Add personal info regarding birth control, notes, intercourse, pills
⦿ eMail history to yourself or your doctor
⦿ Backup
⦿ Basal metabolic temperature (BMT) chart
⦿ 4 Widgets
⦿ Customizable colors
MyDays is a perfect and easy-to-use ovulation calendar & period tracker for every woman.
MyDays is also great for men who care for their partner's cycle.
Please feel free to send me an email with any concerns, problems or suggestions: androchris @gmail.com.
I will answer all your questions ASAP.
Info about Permissions:
Internet Access: To enable "Web based Community Chat"
Call Status: To disable Ads while Calling
Shortcuts: To allow shortcuts only after you request one.
Bookmarks: See Shortcuts
Location: To power Intelligent Reminders and to personalize advertisements in the free version.
Thank you
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- My Days - Ovulation Calendar &
- Developer
- Christian Albert Mueller.
- Bundle ID
- com.chris.mydays
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- Not found
- 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
- $1.7K/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- 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
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
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.
More by Christian Albert Mueller.
View all →
Full revenue analysis
Read the article-style breakdown for My Days - Ovulation Calendar &: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.