Kalenderwoche - PRO
32
Quality Score
Emerging
Kalenderwoche - PRO
Low confidence
✍️ bumetric analysis
“
Kalenderwoche - PRO is an iOS app from Devart B.V. in the Productivity category, currently rated 3.0★ across 2 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 32: Emerging (early traction worth watching). For a Productivity app, that means early traction worth watching. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$737
per month
→
12-mo forecast
$644 – $2322
per month
→
24-mo forecast
$597 – $5372
per month
INDIE tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$55K
↳ What it cost to build · not monthly revenue
Likely range $40K – $75K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Slow ROI — current MRR is well below build cost
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| ⚙ Productivity complexity ×1.10 | +$5K |
Total estimate
$55K
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$737/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$627 – $1.5K
12 months
$644 – $2.3K
24 months
$597 – $5.4K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Pre-traction · 32/100INDIE TIERlimited signalRevenue Strength
2.9
Product Quality
2.4
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
5.0
Founder Strength
2.9
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $294 - $1842/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.0★ across 2 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1658d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (1658d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $13K-$23K.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
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 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 (3.0★)METRIC | −$1,500 | |
| Mature app (12y old)METRIC | +$1,500 | |
| Localized (6 languages)METRIC | +$600 | |
| Pre-traction phase (2 ratings)METRIC | −$300 |
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.
🆕 What's New · v4.20
iOS15 compatible
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Kalenderwoche - PRO
- Developer
- Devart B.V.
- Bundle ID
- nl.devart.weeknumbersunlimited
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- NL, EN, FR, DE, IT, ES
Company
- Website
- Not found
- Tagline
- Wij ontwerpen en bouwen mobiele apps die je blijft gebruiken.
- Description
- Wij ontwerpen en bouwen mobiele apps die je blijft gebruiken: Feestdagen, Calalarm, Supercal, Clictric, Wines - wine notes, Wines - wine notes V2,Noto Summary, Cook kookwekkers. Bekijk nu de Apps die Devart heeft ontworpen en gebouwd!
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
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 Productivity
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
⭐Recent App Store Reviews3 latest · avg 1.0★ · 0% 5★ · 100.0% 1★
5★0 (0%)
4★0 (0%)
3★0 (0%)
2★0 (0%)
1★3 (100%)
+0 ratings/week
Top negative
★☆☆☆☆ Still doesn’t work
Badge just shows 52.
App asked for access to my calendar, I rejected, app locked next time I launched it, asking me to grant access in settings, but has no way to return to settings.…
★☆☆☆☆ Wrong week #
This app shows the wrong week number, it does not follow ISO week standard…
📈Ratings growth2 ratings+100% lifetimeShow 3-year history estimate ▾
Tracked (6 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.
💰Pricing History$0.00 → $0.99 (+0%)
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.
📝 About this app
• Always the current week number on the icon Badge and Widget. Refreshes automatically.
• Easily inserts Week Numbers of year 1 - 10.000 as all-day events into your iPhone and iPad calendar. No need for any subscriptions or internet. Saves you a lot typing.
The app contains:
- ISO / European.
- US.
- Middle East.
- Simple.
- Custom.
- Year 1 - 10.000
You can select beforehand if you want the week numbers to appear on one particular weekday or on all days of the week. Once added all week numbers can be easily edited and synced with iCal, Google, Outlook, iCloud, etc.… View full description on the official store →
• Easily inserts Week Numbers of year 1 - 10.000 as all-day events into your iPhone and iPad calendar. No need for any subscriptions or internet. Saves you a lot typing.
The app contains:
- ISO / European.
- US.
- Middle East.
- Simple.
- Custom.
- Year 1 - 10.000
You can select beforehand if you want the week numbers to appear on one particular weekday or on all days of the week. Once added all week numbers can be easily edited and synced with iCal, Google, Outlook, iCloud, etc.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 3 MB🔞 4+📱 iOS 14.0+🔖 v4.20🔄 updated 0d ago🌐 NL, EN, FR, DE, IT +1📂 Productivity💰 Paid
📅
What Worked™ · Development Pipeline
3 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-03
⭐
Rating ↑ 2.00 → 4.00 (improved 2.00★)
2024-06
⭐
Rating ↑ 1.00 → 2.00 (improved 1.00★)
2016-02
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3★ | 2 | 3★ this version |
| 🇬🇧 GB | 3★ | 1 | 3★ this version |
| 🇩🇪 DE | 4★ | 1 | 4★ this version |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 0★ | 0 | — |
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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📝 Description
95
BU Score · Transcendent
Similar apps in Productivity
About this analysis
Why low confidence: only 2 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Kalenderwoche - PRO is a very early-stage iOS app in the productivity space with weak public traction — only 2 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Kalenderwoche - PRO make per month?▴
Low-confidence model estimate. Kalenderwoche - PRO has only 2 App Store ratings, so our revenue model has very little signal to work with — treat the ~$86/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.
What apps are like Kalenderwoche - PRO?▴
Browse the full Productivity category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
Who makes Kalenderwoche - PRO?▴
Kalenderwoche - PRO is published by Devart B.V. on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is Kalenderwoche - PRO's BU Score?▴
Kalenderwoche - PRO has a BU Score of 32/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.