55
Quality Score
Solid
How Old Is Your Brain?
✍️ bumetric analysis
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How Old Is Your Brain? is an Android app from KDR Games in the Trivia category, currently rated 4.1★ across 851 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 55: Solid (established niche player). For a Trivia 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
ONE-TIME · BUILD💰 Estimated build cost
$160K
↳ What it cost to build · not monthly revenue
Likely range $120K – $215K
$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 |
| ⚙Trivia complexity ×1.40 | +$20K |
| 🌐Cross-platform reach (iOS + Android) | +$38K |
| ⚙8.1y maintenance × ~1-person team | +$48K |
Total estimate$160K
👥 Estimated audience size
105K
Lifetime downloads (US-equivalent)
Monthly active
4.6K
Daily active
1.1K
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
| 📲Trivia engagement | ~180 installs / rating |
| 📅8.1y of rating accumulation | -30% |
| 🔁Trivia D30 retention | 7% |
| 📍DAU / MAU stickiness | 0.25 |
DAU / MAU24% sticky
🛠 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 | Trivia |
| 📦Tiny game bundle | → Native 2D engine |
💀 Maintenance status
At risk
50%
Last shipped 2025-09-19 · 246 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
| 📅8 months since last update | Concerning gap |
VerdictAt risk
🔬
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 · 47/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
6.4
Product Quality
5.7
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
7.0
Market Position
0.0
Operational Safety
9.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.07★ across 851 reviews — below category median.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 242d ago — slow cadence.
- ⚠️ 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 = $90K-$160K. Portfolio play ($7K/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:
| Mature app (8y old)METRIC | +$1,500 | |
| Good rating (4.1★)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (851 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 →🔖 v7.1.0🔄 updated 8mo ago📂 Trivia💰 Free📺 Ad-supported🚀 Launched 2018 (8y old)
📝 About this app
How old is your brain? Find out with this fun mental age quiz. There are a total of 9 different quizzes to try out.
This mental age test calculator is great fun for all ages. Answer 10 questions and then find out how old your brain is! Play with friends and find how old is your brain?!
Please note this app has been developed only for entertainment purposes. The application uses a numerical algorithm to find the brain age and should be used only for fun.
What age is your brain? What is your mental age? How Old Is Your Brain? This test will reveal the answer.… View full description on the official store →
This mental age test calculator is great fun for all ages. Answer 10 questions and then find out how old your brain is! Play with friends and find how old is your brain?!
Please note this app has been developed only for entertainment purposes. The application uses a numerical algorithm to find the brain age and should be used only for fun.
What age is your brain? What is your mental age? How Old Is Your Brain? This test will reveal the answer.… View full description on the official store →
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- How Old Is Your Brain?
- Developer
- KDR Games
- Bundle ID
- dh3games.mentalagetest
- App Store URL
- Open in App Store
- Category
- Trivia
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- dh3games.com
- 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
- $364/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 growth851 ratings+55% lifetimeShow 3-year history estimate ▾
Tracked (1 weeks) Pre-tracking estimate (36 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 KDR Games
View all →📦 Portfolio summaryINDIE studio
23apps·$8K/mocombined
✓ Diversified — top app contributes 9%; risk spread across portfolio
Full revenue analysis
Read the article-style breakdown for How Old Is Your Brain?: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
❓ Frequently Asked Questions
9 answers · auto-generated from this app's public dataHow much does How Old Is Your Brain? make per month?▾
Based on our ML-calibrated revenue forecast, How Old Is Your Brain? earns approximately $364/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 How Old Is Your Brain? profitable?▾
With estimated build cost $160K and monthly revenue $364, How Old Is Your Brain? 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.
How many users does How Old Is Your Brain? have?▾
Estimated audience: ~105K lifetime downloads, ~4K monthly active users, and ~1K daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like How Old Is Your Brain??▾
Browse the full Trivia 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 How Old Is Your Brain? built with?▾
Our heuristic places How Old Is Your Brain? 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 How Old Is Your Brain? still actively maintained?▾
Maintenance status: At risk (50% abandonment risk). Last shipped version was 8 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was How Old Is Your Brain? last updated?▾
How Old Is Your Brain? last shipped a new version on 2025-09-19 — 8 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes How Old Is Your Brain??▾
How Old Is Your Brain? is published by KDR Games 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 How Old Is Your Brain?'s BU Score?▾
How Old Is Your Brain? has a BU Score of 55/100 (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.