0
BU Score
Niche
Call Checker
✍️ bumetric analysis
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Call Checker is an iOS app from Piet Jonas in the Business category, currently rated — across few ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Our BU Score puts it at 0: Niche (micro-niche or pre-traction stage). For a Business 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
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:
| Paid app ($0.00)METRIC | +$2,800 | |
| Mature app (17y old)METRIC | +$1,500 | |
| Single-language (English only)METRIC | −$400 |
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 →💾 2 MB🔞 4+📱 iOS 15.6+🔖 v1.3.3🔄 updated 8mo ago🌐 EN📂 Business💰 Paid🚀 Launched 2008 (17y old)
📝 About this app
In a global world it becomes more and more difficult to keep track of the local times of all your important contacts. If you want to avoid to call them at a bad time this application is for you. A quick check tells you whether it's the right time to call or not and who is available at the moment.
If you enter the phone number a simple tap on the name is enough to initiate the call (iPhone only).
If you enter the phone number a simple tap on the name is enough to initiate the call (iPhone only).
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Call Checker
- Developer
- Piet Jonas
- Bundle ID
- com.speedymarks.apps.CallChecker
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- EN
Company
- Website
- callchecker.speedymarks.com
- 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 100 in US Business
- 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
- callchecker@speedymarks.com
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
🌍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.
Full revenue analysis
Read the article-style breakdown for Call Checker: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.