How much does Circle of Fifths make per month?

Based on our ML-calibrated revenue forecast, Circle of Fifths earns approximately $548/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 Circle of Fifths profitable?

With estimated build cost $155K and monthly revenue $548, Circle of Fifths 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 Circle of Fifths have?

Estimated audience: ~205K lifetime downloads, ~27K monthly active users, and ~13K 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 Circle of Fifths?

Browse the full Music & Audio 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 Circle of Fifths built with?

Our heuristic places Circle of Fifths 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 Circle of Fifths still actively maintained?

Maintenance status: Slowing (30% abandonment risk). Last shipped version was 5 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

How much would Circle of Fifths sell for?

Estimated acquisition value: $10K (marketplace range $10K – $15K). Calculated as 21× 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 Circle of Fifths last updated?

Circle of Fifths last shipped a new version on 2026-05-27 — 5 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes Circle of Fifths?

Circle of Fifths is published by Josh Liebe 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 Circle of Fifths's BU Score?

Circle of Fifths has a BU Score of 66/100 (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.

Circle of Fifths

Quality Score

Solid

Circle of Fifths

Name: Circle of Fifths — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Circle of Fifths revenue, Circle of Fifths app analytics, mobile app revenue estimate, Music & Audio revenue, Android app revenue

by Josh Liebe

Medium confidence

5.0 Google Play rating

✍️ Bumetric analysis

“

Circle of Fifths is an Android app from Josh Liebe in the Music & Audio category, currently rated 5.0★ across 2,287 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Quality Score is 66: Solid (established niche player). For a Music & Audio 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

$548

per month

→

12-mo forecast

$479 – $1728

per month

→

24-mo forecast

$444 – $3997

per month

INDIE tier

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Title & subtitle keyword fit
Description hook & conversion structure
Screenshots, ratings, reviews strategy

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Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

2 snapshots on record

idle

Rating

5.0

Reviews

2,287 reviews

Forecast Revenue / mo

$548

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$155K

↳ What it cost to build · not monthly revenue

Likely range $115K – $210K

$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
⚙ Music & Audio complexity ×1.45	+$22K
🌐 Cross-platform reach (iOS + Android)	+$40K
⚙ 7.3y maintenance × ~1-person team	+$43K

Total estimate $155K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$10K

↳ What it would sell for · not monthly revenue

Marketplace range $10K – $15K · 21× MRR multiple

💸 ~0.1× 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
📅 7.3y proven track record	+20%
⭐ ★ rating ≥ 4.7 (premium)	+15%

Final multiple 21× MRR

👥 Estimated audience size

205K

Lifetime downloads (US-equivalent)

Monthly active

27K

Daily active

13K

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

📲 Music & Audio engagement	~130 installs / rating
📅 7.3y of rating accumulation	-30%
🔁 Music & Audio D30 retention	20%
📍 DAU / MAU stickiness	0.50

DAU / MAU 49% sticky

🛠 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	Music & Audio
📦 Compact Android bundle	→ Native Kotlin

💀 Maintenance status

Slowing

30%

Last shipped 2026-05-27 · 159 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

📅 5 months since last update

Slowing cadence

Verdict Slowing

🔬

How we forecast this revenue

LOW CONFIDENCE

Baseline

$548/mo · ML-estimated from 234 triggers

Growth rate

+6.0% MoM · INDIE tier baseline (compound monthly)

6 months

$467 – $1.1K

12 months

$479 – $1.7K

24 months

$444 – $4.0K

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 tier

Growth Velocity

5.0

Founder Strength

3.5

Product Quality

8.9

Revenue Strength

2.7

Monetization Maturity

1.0

Defensibility

3.8

Market Position

0.0

Operational Safety

10.0

💰 Revenue: Marginal — $219 - $1370/mo · INDIE tier · medium confidence, trajectory unclear.
⭐ Quality: 4.97★ across 2,287 reviews — strong (top 10%).
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: Insufficient signal to assess trajectory.
⚠️ 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 = $9K-$17K.

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

MODEL

Revenue 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 6 of 6 triggers

Our ML model uses 200+ signals from public data. These are the most influential for this app:

Excellent rating (5.0★)METRIC		+$2,200
excellent appREVIEW		+$1,500
Low install base (2,287 ratings)METRIC		+$1,500
highly recommendREVIEW		+$1,400
Established app (7y old)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600

METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📥 Estimated Downloads / week

PROXY · ratings × 50/wk —

Industry-rule estimate (Sensor Tower / data.ai): one weekly install ≈ 50 new ratings. Solid points = tracked snapshots · faded line = pre-tracking model backfill.

📈 Reviews Growth

LIVE

Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE

Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY

Each bar shows a tracked update and the metric delta from the previous snapshot.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name: Circle of Fifths
Developer: Josh Liebe
Bundle ID: com.joshliebe.circleoffifths
App Store URL: Open in App Store
Category: Music & Audio
Content rating: Not found
Languages: Not found

Company

Website: www.circleoffifths.app
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: $548/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.

🚀Update Frequency · Releases per Quarter2 releases tracked

🚀Version Release Timeline2 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

The circle of fifths (Sometimes called circle of fourths) is a great tool for understanding the music theory behind the 12 keys of the chromatic scale. It is useful for visualizing the music notation of the different scales, composing chord progressions/modulations and mixing in key.

Features:

- Color-coded relationship between the major, minor and diminished keys

- Key signature and triad for each key

- A sounded chord/arpeggio for each key (With mute/unmute toggle)

- Ability to lock the circle to currently selected key… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v1.1.9🔄 updated 5mo ago📂 Music & Audio💰 Free🚀 Launched 2019 (7y old)

📸

Store Page History

5 SCREENSHOT CHANGES

Every time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.

iPhone screenshots

Slot 1
2 ver.

2026-05-23

Now

2026-10-29

Slot 2
2 ver.

2026-05-23

Now

2026-10-29

Slot 4
2 ver.

2026-05-23

Now

2026-10-29

Slot 6
2 ver.

2026-05-23

Now

2026-10-29

Slot 8
2 ver.

2026-05-23

Now

2026-10-29

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Circle of Fifths: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →