Simply Piano: Klavier lernen
86
Quality Score
Excellent
✍️ Bumetric analysis
“
Simply Piano: Klavier lernen is an iOS app from Simply Ltd in the Education category, currently rated 4.7★ across 819,366 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 86: Excellent (strong product-market fit). For a Education app, that means strong product-market fit. 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
$1.2M
per month
→
12-mo forecast
$1.3M – $1.9M
per month
→
24-mo forecast
$1.5M – $2.8M
per month
BIG 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
506 snapshots on record
Rating
4.7
Reviews
819,366 reviews
Forecast Revenue / mo
$1.2M
Snapshots tracked
506
since Dec 2025
ONE-TIME · BUILD
💰 Estimated build cost
$175K
↳ What it cost to build · not monthly revenue
Likely range $130K – $235K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in under a month 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 (291 MB) | +$40K |
| ⚙ Education complexity ×1.20 | +$18K |
| ⚙ 11.1y maintenance × ~1-person team | +$66K |
Total estimate
$175K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$25.5M
↳ What it would sell for · not monthly revenue
Marketplace range $19.5M – $33.5M · 22× MRR multiple
💸
~146× return on build cost
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 |
| 📅 11.1y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
| ⭐ Mature user base (100K+ ratings) | +5% |
Final multiple
22× MRR
👥 Estimated audience size
48.5M
Lifetime downloads (US-equivalent)
Monthly active
4.0M
Daily active
1.1M
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 |
| 📅 11.1y of rating accumulation | -30% |
| 🔁 Education D30 retention | 18% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
29% sticky
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
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 | 291 MB |
| 🏷 Category context | Education |
| 📦 Large iOS bundle | → Native Swift / UIKit (pre-2020 era) + assets |
💀 Maintenance status
Active
5%
Last shipped 2026-09-10 · 13 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
| 📅 13 days since last update | Active development |
Verdict
Active
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.2M/mo · ML-estimated from 234 triggers
Growth rate
+2.5% MoM · BIG tier baseline (compound monthly)
6 months
$1.2M – $1.6M
12 months
$1.3M – $1.9M
24 months
$1.5M – $2.8M
Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon — typical noise band ±15% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Mixed signals · 57/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
6.3
Product Quality
9.4
Revenue Strength
6.1
Monetization Maturity
1.0
Defensibility
6.0
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Healthy — $475K - $2617K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.69★ across 819,366 reviews — exceptional (top 1% in category).
- 📍 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 = $21.4M-$38.1M.
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 15 of 16 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| High install base (819,366 ratings)METRIC | +$12,000 | |
| Paid app ($0.00)METRIC | +$2,800 | |
| subscriptionREVIEW | +$2,500 | |
| premiumREVIEW | +$2,200 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| cancelledREVIEW | −$1,500 | |
| Mature app (11y old)METRIC | +$1,500 | |
| Multilingual (14 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| free trialREVIEW | +$1,200 | |
| too expensiveREVIEW | −$1,000 | |
| support teamREVIEW | +$900 |
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 · v9.10.92
Just like a piano, the app needed some tuning. We fixed some pesky bugs so it should B sharp now.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Simply Piano: Klavier lernen
- Developer
- Simply Ltd
- Bundle ID
- com.joytunes.asla
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- AR, NL, EN, FR, DE, HE, IT, JA, KO, PT, RU, ZH, ES, ZH
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
- $1.2M/mo
- Top-grossing rank
- 🇦🇺#5 /100 🇬🇧#6 /100 🇺🇸#7 /100 🇩🇪#7 /100 🇨🇦#9 /100 🇫🇷#10 /100 🇧🇷#13 /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 growth849,809 ratings+190014% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Top Countries — Grossing Rank9 countries
🇦🇺AU#5 /100
🇬🇧GB#6 /100
🇺🇸US#7 /100
🇩🇪DE#7 /100
🇨🇦CA#9 /100
🇫🇷FR#10 /100
🇧🇷BR#13 /100
🇮🇳IN#20 /100
🇯🇵JP#28 /100
📊Category Rank Trajectory#5 now · best #5 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
🚀Update Frequency · Releases per Quarter5 releases tracked
🚀Version Release Timeline5 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
Simply Piano is a fast and fun way to learn piano, from beginner to pro. Works with any piano or keyboard. Chosen as one of the best iPhone apps.
- Tons of fun songs like Imagine, Chandelier, All Of Me and Counting Stars, also J.S. Bach
- Includes courses for different musical tastes and playing levels
- Learn the basics step-by-step from reading sheet music to playing with both hands
- Slow down library songs to choose your own pace for easy learning
- Personalized 5-Min Workouts ensuring you progress fast and always succeed… View full description on the official store →
- Tons of fun songs like Imagine, Chandelier, All Of Me and Counting Stars, also J.S. Bach
- Includes courses for different musical tastes and playing levels
- Learn the basics step-by-step from reading sheet music to playing with both hands
- Slow down library songs to choose your own pace for easy learning
- Personalized 5-Min Workouts ensuring you progress fast and always succeed… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 291 MB🔞 4+📱 iOS 15.0+🔖 v9.10.92🔄 updated 1w ago🌐 AR, NL, EN, FR, DE +9📂 Education💰 Paid🚀 Launched 2015 (11y old)
📅
What Worked™ · Development Pipeline
13 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
🔧
Shipped update — v9.10.85 → v9.10.92
→ 30 days after: reviews +7,342 high confidence
2026-08
🔧
Shipped update — v9.10.78 → v9.10.85
→ 30 days after: reviews +15,734 medium · co-occurring
2026-07
🔧
Shipped update — v9.10.72 → v9.10.78
→ 30 days after: revenue +$23.5K/mo · reviews +16,525 high confidence
2026-06
🔧
Shipped update — v9.10.68 → v9.10.72
→ 30 days after: revenue +$23.5K/mo · reviews +17,140 medium · co-occurring
2026-05
🔄
Monetization changed: paid → free
→ 30 days after: reviews +9,007 high confidence
2026-03
⭐
Rating ↑ 3.31 → 4.70 (improved 1.39★)
→ 30 days after: reviews +48 high confidence
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +48 high confidence
2026-01
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.67★ · reviews +298 medium · co-occurring
2026-01
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.55★ · reviews +291 low · multiple changes
2025-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.52★ · reviews +265 low · multiple changes
2025-12
⭐
Rating ↓ 4.00 → 3.67 (dropped 0.33★)
→ 30 days after: rating −0.53★ · reviews +261 low · multiple changes
2025-12
⭐
Rating ↑ 4.00 → 4.50 (improved 0.50★)
→ 30 days after: rating −0.55★ · reviews +254 low · multiple changes
2025-12
🚀
First tracked snapshot — initial data captured
→ 30 days after: rating −0.55★ · reviews +254 low · multiple changes
🧪
Tech & Domain Intel — hellosimply.com
- Mail provider
- Google Workspace
- Tech stack
- Meta (Facebook) Ads · Google Workspace · Stripe · SendGrid
Derived from public RDAP + DNS TXT records (no scraping, no login).
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.62226★ | 104,903 | 4.62226★ this version |
| 🇧🇷 BR | 4.81353★ | 53,021 | 4.81353★ this version |
| 🇨🇦 CA | 4.61294★ | 128,122 | 4.61294★ this version |
| 🇩🇪 DE | 4.68304★ | 83,327 | 4.68304★ this version |
| 🇫🇷 FR | 4.67286★ | 86,040 | 4.67286★ this version |
| 🇬🇧 GB | 4.65495★ | 176,429 | 4.65495★ this version |
| 🇮🇳 IN | 4.68644★ | 34,871 | 4.68644★ this version |
| 🇯🇵 JP | 4.6612★ | 87,245 | 4.6612★ this version |
| 🇺🇸 US | 4.68363★ | 851,063 | 4.68363★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Simply Piano: Klavier lernen: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Simply Ltd
View all →📦 Portfolio summaryBIG studio
5apps·$4.6M/mocombined
✓ Diversified — top app contributes 26%; risk spread across portfolio
About this analysis
Why high confidence: 819,366 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Simply Piano make per month?▴
Based on our ML-calibrated revenue forecast, Simply Piano earns approximately $1.2M/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 Simply Piano profitable?▴
With estimated build cost $175K and monthly revenue $1.2M, Simply Piano looks highly profitable — pays back its build investment in under a month at the current run-rate. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Simply Piano have?▴
Estimated audience: ~48.5M lifetime downloads, ~4.0M monthly active users, and ~1.1M 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 Simply Piano?▴
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 Simply Piano built with?▴
Our heuristic places Simply Piano on the Native iOS (Swift / UIKit) 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 Simply Piano still actively maintained?▴
Maintenance status: Active (5% abandonment risk). Last shipped version was 13 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Simply Piano sell for?▴
Estimated acquisition value: $25.5M (marketplace range $19.5M – $33.5M). Calculated as 22× 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 Simply Piano last updated?▴
Simply Piano last shipped a new version on 2026-09-10 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Simply Piano?▴
Simply Piano is published by Simply Ltd 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 Simply Piano's BU Score?▴
Simply Piano has a BU Score of 86/100 (Excellent). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.