64
Quality Score
Solid
Driving license sea
✍️ bumetric analysis
“
Driving license sea is an Android app from Matthias Wimmer in the Education category, currently rated 5.0★ across 701 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 64: Solid (established niche player). For a Education app, that means established niche player. 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.
💰 Revenue · today and ahead
Today
$5.0K/mo
In 12 months
$5.2K – $10.8K
In 24 months
$6.4K – $19.2K
MID 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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
💰 Estimated build cost
$175K
Likely range $130K – $235K
$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 |
| ⚙Education complexity ×1.20 | +$10K |
| 🌐Cross-platform reach (iOS + Android) | +$33K |
| ⚙13.8y maintenance × ~1-person team | +$82K |
Total estimate$175K
👥 Estimated audience size
41K
Lifetime downloads (US-equivalent)
Monthly active
2.1K
Daily active
630
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲Education engagement | ~85 installs / rating |
| 📅13.8y of rating accumulation | -30% |
| 🔁Education D30 retention | 18% |
| 📍DAU / MAU stickiness | 0.30 |
DAU / MAU30% sticky
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 75%
Also possible
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 🏷Category context | Education |
| 📦Small bundle, Android-only | → Native Kotlin |
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 46/100MID TIERunderperforming peersRevenue Strength
3.7
Product Quality
7.0
Market Position
0.0
Growth Velocity
5.0
Defensibility
7.5
Operational Safety
7.0
Founder Strength
5.8
Monetization Maturity
1.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 5.0★ across 701 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 922d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (922d since update).
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $90K-$160K.
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.
🧪
Tech & Domain Intel — sportboot.mobi
- Tech stack
- Google Workspace
Derived from public RDAP + DNS TXT records (no scraping, no login).
🔔
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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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Excellent rating (5.0★)METRIC | +$2,200 | |
| Mature app (13y old)METRIC | +$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (701 ratings)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.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.6.108🔄 updated 2y ago📂 Education💰 Free🚀 Launched 2012 (13y old)
📝 About this app
The Sportbootführerschein See (SBFS) is a German driving license for pleasure crafts on sea waterways. To get it you have to pass a written and a driving test.
While you should either have experience in driving a boat or visit a course at a boat school to pass the practical test, you can easily prepare yourself for the written exam. The test is taken using a known list of multiple choice questions.
This app contains all the questions (except the map tasks) you may be asked in the written exam. Prepare yourself using this App and you will have no problems with the exam.… View full description on the official store →
While you should either have experience in driving a boat or visit a course at a boat school to pass the practical test, you can easily prepare yourself for the written exam. The test is taken using a known list of multiple choice questions.
This app contains all the questions (except the map tasks) you may be asked in the written exam. Prepare yourself using this App and you will have no problems with the exam.… View full description on the official store →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Driving license sea
- Developer
- Matthias Wimmer
- Bundle ID
- eu.wimmerinformatik.sbfs
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- sportboot.mobi
- 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
- $452/mo
- Top-grossing rank
- Not found
- 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.
📈Ratings growth701 ratings+27% lifetimeShow 3-year history estimate ▾
Tracked (1 weeks) Pre-tracking estimate (35 weeks) · model-based, ±5% noise · anchored to release date and current value
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 Matthias Wimmer
View all →📦 Portfolio summaryINDIE studio
6apps·$1K/mocombined
✓ Diversified — top app contributes 25%; risk spread across portfolio
Full revenue analysis
Read the article-style breakdown for Driving license sea: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.