0
Quality Score
Niche
Long Range Certificate (LRC)
✍️ bumetric analysis
“
Long Range Certificate (LRC) is an Android app from Matthias Wimmer in the Education category, currently rated — across few ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 0: Niche (micro-niche or pre-traction stage). For a Education app, that means micro-niche or pre-traction stage. 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
$500/mo
In 12 months
$437 – $1575
In 24 months
$405 – $3644
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$180K
↳ What it cost to build · not monthly revenue
Likely range $135K – $245K
$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 |
| ⚙14.1y maintenance × ~1-person team | +$84K |
Total estimate$180K
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 80%
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 |
| 📦Compact Android bundle | → Native Kotlin |
💀 Maintenance status
Likely abandoned
93%
Last shipped 2023-11-12 · 923 days ago
0 · Active50 · At risk100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅2y+ since last update | Likely abandoned |
| •14y old + 1y+ no update | +5% (API deprecation drift) |
VerdictLikely abandoned
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/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
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
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 · 36/100INDIE TIERlimited signalRevenue Strength
2.7
Product Quality
0.0
Market Position
0.0
Growth Velocity
5.0
Defensibility
7.5
Operational Safety
7.0
Founder Strength
5.8
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: None★ across 0 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 923d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (923d 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 = $9K-$16K. Portfolio play ($1K/mo combined) commands premium.
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.
📈 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 →🔖 v1.6.30🔄 updated 2y ago📂 Education💰 Free🚀 Launched 2012 (14y old)
📝 About this app
The Long Range Certificate ("Allgemeines Funkbetriebszeugnis" or LRC) is a German licence required to operate GMDSS radio stations on board of pleasure crafts. It allows participation in the maritime mobile service and the maritime mobile-satellite service.
This app allows you to train the questions used in the written test. The test has to be taken in the German language. Therefore the questions in this application are German as well.
All questions have to be answered correctly five times. If a question gets answered wrong, one correct answer is subtracted again.… View full description on the official store →
This app allows you to train the questions used in the written test. The test has to be taken in the German language. Therefore the questions in this application are German as well.
All questions have to be answered correctly five times. If a question gets answered wrong, one correct answer is subtracted again.… View full description on the official store →
🧪
Tech & Domain Intel — sportboot.mobi
- Tech stack
- Google Workspace
Derived from public RDAP + DNS TXT records (no scraping, no login).
🔔
Track this app’s revenue
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Long Range Certificate (LRC)
- Developer
- Matthias Wimmer
- Bundle ID
- eu.wimmerinformatik.lrc
- 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
- $105/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.
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 Long Range Certificate (LRC): category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does Long Range Certificate (LRC) make per month?▾
Based on our ML-calibrated revenue forecast, Long Range Certificate (LRC) earns approximately $105/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
Is Long Range Certificate (LRC) profitable?▾
With estimated build cost $180K and monthly revenue $105, Long Range Certificate (LRC) looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
What apps are like Long Range Certificate (LRC)?▾
Browse the full Education 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.
What is Long Range Certificate (LRC) built with?▾
Our heuristic places Long Range Certificate (LRC) on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is Long Range Certificate (LRC) still actively maintained?▾
Maintenance status: Likely abandoned (93% abandonment risk). Last shipped version was 2+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was Long Range Certificate (LRC) last updated?▾
Long Range Certificate (LRC) last shipped a new version on 2023-11-12 — more than 2 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Long Range Certificate (LRC)?▾
Long Range Certificate (LRC) is published by Matthias Wimmer on the Google Play Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.