cabuu - Vokabeln lernen
64
Quality Score
Solid
✍️ Bumetric analysis
“
cabuu - Vokabeln lernen is an iOS app from cabuu GmbH in the Education category, currently rated 4.7★ across 24 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.
💰 Monthly revenue · now vs forecast
● Right now
$10.0K
per month
→
12-mo forecast
$8.7K – $31.5K
per month
→
24-mo forecast
$8.1K – $72.9K
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
35 snapshots on record
Rating
4.7
Reviews
24 reviews
Forecast Revenue / mo
$10.0K
Snapshots tracked
35
since Aug 2024
ONE-TIME · BUILD
💰 Estimated build cost
$130K
↳ What it cost to build · not monthly revenue
Likely range $100K – $175K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~1.1y at current MRR
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 |
| 📦 Asset bundle (236 MB) | +$40K |
| ⚙ Education complexity ×1.20 | +$18K |
| ⚙ 3.5y maintenance × ~1-person team | +$20K |
Total estimate
$130K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$175K
↳ What it would sell for · not monthly revenue
Marketplace range $150K – $250K · 18× MRR multiple
💸
~1.3× build cost (break-even+)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| 📅 3.5y proven track record | +17% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
18× MRR
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
Medium confidence · 55%
Also possible
React Native
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
| 📦 App bundle size | 236 MB |
| 🏷 Category context | Education |
| 📦 Large iOS bundle | → Native SwiftUI (post-2020 era) + assets |
💀 Maintenance status
Active
15%
Last shipped 2026-09-07 · 17 days ago
0 · Active
50 · At risk
100 · 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
| 📅 17 days since last update | Active development |
| 👥 Small user base (24 ratings) + 3.5y old | +10% (solo-project pattern) |
Verdict
Active
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$10.0K/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
$8.5K – $19.9K
12 months
$8.7K – $31.5K
24 months
$8.1K – $72.9K
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
Early-stage solo · 45/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
5.6
Product Quality
3.7
Revenue Strength
4.0
Monetization Maturity
1.0
Defensibility
4.3
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $4K - $15K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.67★ across 24 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: dev shipping weekly.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 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 = $180K-$320K. Portfolio play ($38K/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.
🔬Forecast Breakdown — Why This Estimate?Top 8 of 8 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 | |
| subscriptionREVIEW | +$2,500 | |
| premiumREVIEW | +$2,200 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| 5 starREVIEW | +$1,800 | |
| Established app (3y old)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (24 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 · v8.0.4
Robot Bo and his cabuu crew have been working hard on the app so that you can learn in a relaxed manner. Minor bugs have been fixed and the app has been optimised.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- cabuu - Vokabeln lernen
- Developer
- cabuu GmbH
- Bundle ID
- app.cabuu.vokabeltrainer
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $10.0K/mo
- Top-grossing rank
- 🇩🇪#19 /100
- 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 growth23 ratings+1050% lifetimeShow 3-year history estimate ▾
Tracked (35 weeks) Pre-tracking estimate (0 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇩🇪
DE
Top-grossing rank: #19 / 100
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#19 now · best #19 · worst #19
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
🚀Update Frequency · Releases per Quarter4 releases tracked
🚀Version Release Timeline4 releases tracked
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
Learn your vocabulary easier than ever before and ace your next vocabulary test!
For German, French and Spanish.
*AWARD-WINNING VOCABULARY TRAINER*
In 2019, the cabuu app was awarded the Comenius-EduMedia-Seal by the Society for Pedagogy, Information and Media (GPI) .
__
NO MORE FRUSTRATING LEARNING SESSIONS
Learn your vocabulary with varied exercises, master challenges and level up. With this vocabulary trainer, learning no longer feels boring, but easy and motivating.
INTERACTIVE LEARNING *
Move, listen, see: Your senses are involved when learning your vocabulary with cabuu.… View full description on the official store →
For German, French and Spanish.
*AWARD-WINNING VOCABULARY TRAINER*
In 2019, the cabuu app was awarded the Comenius-EduMedia-Seal by the Society for Pedagogy, Information and Media (GPI) .
__
NO MORE FRUSTRATING LEARNING SESSIONS
Learn your vocabulary with varied exercises, master challenges and level up. With this vocabulary trainer, learning no longer feels boring, but easy and motivating.
INTERACTIVE LEARNING *
Move, listen, see: Your senses are involved when learning your vocabulary with cabuu.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 236 MB🔞 4+📱 iOS 15.0+🔖 v8.0.4🔄 updated 2w ago🌐 EN📂 Education💰 Paid🚀 Launched 2023 (3y old)
📅
What Worked™ · Development Pipeline
12 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 →
2026-09
📸
Refreshed store screenshots — 14 of 14 updated
2026-09
🔧
Shipped update — v7.2.23 → v8.0.4
2026-06
🔧
Shipped update — v7.2.22 → v7.2.23
→ 30 days after: revenue +$37.3K/mo high confidence
2026-06
🔧
Shipped update — v7.2.21 → v7.2.22
2026-05
🔄
Monetization changed: paid → free
2026-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↑ 4.00 → 4.60 (improved 0.60★)
2024-11
⭐
Rating ↑ 3.00 → 3.75 (improved 0.75★)
2024-11
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
→ 30 days after: rating +0.75★ low · multiple changes
2024-08
🚀
First tracked snapshot — initial data captured
2024-08
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
2024-08
🚀
First tracked snapshot — initial data captured
📸
Store Page History
14 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPad screenshots
Slot 1
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 2
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 3
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 4
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 5
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 6
2 ver.
2 ver.
2026-08-06
2026-09-09
iPhone screenshots
Slot 1
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 2
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 3
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 4
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 5
2 ver.
2 ver.
2026-08-06
2026-09-09
Slot 6
2 ver.
2 ver.
2026-08-06
2026-09-09
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 5★ | 2 | 5★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 3.5★ | 2 | 3.5★ this version |
| 🇩🇪 DE | 4.58342★ | 16,398 | 4.58342★ this version |
| 🇫🇷 FR | 4.5★ | 22 | 4.5★ this version |
| 🇬🇧 GB | 4.2★ | 5 | 4.2★ this version |
| 🇮🇳 IN | 5★ | 1 | 5★ this version |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇺🇸 US | 4.65217★ | 23 | 4.65217★ this version |
🔔
Track this app’s revenue
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📝 Description
95
BU Score · Transcendent
More by cabuu GmbH
View all →📦 Portfolio summaryINDIE studio
2apps·$15K/mocombined
Lead-app heavy — top app contributes 67%
About this analysis
Why low confidence: only 24 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
cabuu - Vokabeln lernen is a small / niche iOS app in the education space with weak public traction — only 24 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
7 answers · auto-generated from this app's public dataHow much does cabuu - Vokabeln lernen make per month?▴
Our model estimates cabuu - Vokabeln lernen earns roughly $10K/mo, but with only 24 ratings the confidence interval is wide. No founder-verified MRR is available for this app, so this is a model output calibrated against comparable apps in the same category. See methodology for the formula.
What apps are like cabuu - Vokabeln lernen?▴
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 cabuu - Vokabeln lernen built with?▴
Our heuristic places cabuu - Vokabeln lernen on the Native iOS (SwiftUI) stack (Medium confidence, 55%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is cabuu - Vokabeln lernen still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 17 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was cabuu - Vokabeln lernen last updated?▴
cabuu - Vokabeln lernen last shipped a new version on 2026-09-07 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes cabuu - Vokabeln lernen?▴
cabuu - Vokabeln lernen is published by cabuu GmbH 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 cabuu - Vokabeln lernen's BU Score?▴
cabuu - Vokabeln lernen has a BU Score of 64/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.