KING OF KARTS - Single & Multi
56
Quality Score
Solid
✍️ Bumetric analysis
“
KING OF KARTS - Single & Multi is an Android app from wonderkind GmbH in the Racing category, currently rated 4.2★ across 62 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 56: Solid (established niche player). For a Racing 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
$2.8K
per month
→
12-mo forecast
$2.4K – $8.8K
per month
→
24-mo forecast
$2.3K – $20.4K
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
1 snapshots on record
Rating
4.2
Reviews
62 reviews
Forecast Revenue / mo
$2.8K
Snapshots tracked
1
since Sep 2026
ONE-TIME · BUILD
💰 Estimated build cost
$230K
↳ What it cost to build · not monthly revenue
Likely range $170K – $310K
$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 |
| ⚙ Racing complexity ×2.10 | +$55K |
| 🌐 Cross-platform reach (iOS + Android) | +$58K |
| ⚙ 10.8y maintenance × ~1-person team | +$64K |
Total estimate
$230K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$40K
↳ What it would sell for · not monthly revenue
Marketplace range $30K – $50K · 14× MRR multiple
💸
~0.2× build cost (under-water)
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 |
| 📅 10.8y proven track record | +20% |
| 🏷 Racing category multiple | -15% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
14× MRR
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
Medium confidence · 55%
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 | Racing |
| 📦 Tiny game bundle | → Native 2D engine |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2017-11-16 · 3234 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
| 📅 8y+ since last update | Likely abandoned |
| 👥 Small user base (62 ratings) + 10.8y old | +10% (solo-project pattern) |
| • 11y old + 1y+ no update | +5% (API deprecation drift) |
Verdict
Likely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$2.8K/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
$2.4K – $5.5K
12 months
$2.4K – $8.8K
24 months
$2.3K – $20.4K
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
Early-stage solo · 44/100INDIE TIERexpected for tierRevenue Strength
3.4
Product Quality
3.4
Market Position
0.0
Growth Velocity
5.0
Defensibility
7.5
Operational Safety
7.0
Founder Strength
7.5
Monetization Maturity
1.0
- 💰 Revenue: Modest — $1K - $6K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.2★ across 62 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 3234d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (3234d 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 = $50K-$89K. Portfolio play ($103K/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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($5.99)METRIC | +$2,800 | |
| Mature app (10y old)METRIC | +$1,500 | |
| Good rating (4.2★)METRIC | +$800 | |
| Pre-traction phase (62 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.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- KING OF KARTS - Single & Multi
- Developer
- wonderkind GmbH
- Bundle ID
- de.wonderkind.kingofkarts
- App Store URL
- Open in App Store
- Category
- Racing
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- kingofkarts.popclaire.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $2.8K/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.
📝 About this app
Battle your friends across 8 tracks! Amazing 3D racing game! Get ready to KART!
<b>FEATURES</b>
• New split screen multiplayer mode
• 4 great different game modes
• Local multiplayer matches with up to 6 devices
• The coolest power-up items for real arcade action
• Discover shortcuts and hidden paths
• Activate boost fields and jump ramps
• Dare risky stunts and drifts
• NOW with GAMEPAD support (just like on a console)
Feel the rush and enjoy the fun:
• 6 cool racecar drivers
• 8 breathtaking and adventurous racetracks (2 cups, 4 racetracks each)… View full description on the official store →
<b>FEATURES</b>
• New split screen multiplayer mode
• 4 great different game modes
• Local multiplayer matches with up to 6 devices
• The coolest power-up items for real arcade action
• Discover shortcuts and hidden paths
• Activate boost fields and jump ramps
• Dare risky stunts and drifts
• NOW with GAMEPAD support (just like on a console)
Feel the rush and enjoy the fun:
• 6 cool racecar drivers
• 8 breathtaking and adventurous racetracks (2 cups, 4 racetracks each)… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.1🔄 updated 8y ago📂 Racing💰 Free🚀 Launched 2015 (10y old)
🔔
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📝 Description
95
BU Score · Transcendent
More by wonderkind GmbH
View all →📦 Portfolio summaryBIG studio
26apps·$4.3M/mocombined
✓ Diversified — top app contributes 16%; risk spread across portfolio
About this analysis
Why low confidence: only 62 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
9 answers · auto-generated from this app's public dataHow much does KING OF KARTS - Single & Multi make per month?▴
Based on our ML-calibrated revenue forecast, KING OF KARTS - Single & Multi earns approximately $2.8K/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 KING OF KARTS - Single & Multi profitable?▴
With estimated build cost $230K and monthly revenue $2.8K, KING OF KARTS - Single & Multi 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 KING OF KARTS - Single & Multi?▴
Browse the full Racing 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 KING OF KARTS - Single & Multi built with?▴
Our heuristic places KING OF KARTS - Single & Multi on the Native Android (Kotlin) stack (Medium confidence, 55%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is KING OF KARTS - Single & Multi still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 8+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would KING OF KARTS - Single & Multi sell for?▴
Estimated acquisition value: $40K (marketplace range $30K – $50K). Calculated as 14× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was KING OF KARTS - Single & Multi last updated?▴
KING OF KARTS - Single & Multi last shipped a new version on 2017-11-16 — more than 8 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes KING OF KARTS - Single & Multi?▴
KING OF KARTS - Single & Multi is published by wonderkind GmbH 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.
What is KING OF KARTS - Single & Multi's BU Score?▴
KING OF KARTS - Single & Multi has a BU Score of 56/100 (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.