How much does DK 15 Minute Language Course make per month?

Based on our ML-calibrated revenue forecast, DK 15 Minute Language Course earns approximately $5.0K/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 DK 15 Minute Language Course profitable?

With estimated build cost $145K and monthly revenue $5.0K, DK 15 Minute Language Course looks break-even-grade — payback period sits around 2.4 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.

How many users does DK 15 Minute Language Course have?

Estimated audience: ~19K lifetime downloads, ~2K monthly active users, and ~600 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 DK 15 Minute Language Course?

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 DK 15 Minute Language Course built with?

Our heuristic places DK 15 Minute Language Course 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 DK 15 Minute Language Course still actively maintained?

Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 3+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

How much would DK 15 Minute Language Course sell for?

Estimated acquisition value: $75K (marketplace range $50K – $100K). 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 DK 15 Minute Language Course last updated?

DK 15 Minute Language Course last shipped a new version on 2023-08-31 — more than 3 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes DK 15 Minute Language Course?

DK 15 Minute Language Course is published by Dorling Kindersley 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 DK 15 Minute Language Course's BU Score?

DK 15 Minute Language Course has a BU Score of 39/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.

DK 15 Minute Language Course

Quality Score

Emerging

DK 15 Minute Language Course

Name: DK 15 Minute Language Course — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: DK 15 Minute Language Course revenue, DK 15 Minute Language Course app analytics, mobile app revenue estimate, Education revenue, Android app revenue

by Dorling Kindersley

Medium confidence

2.7 Google Play rating

✍️ Bumetric analysis

“

DK 15 Minute Language Course is an Android app from Dorling Kindersley in the Education category, currently rated 2.7★ across 330 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.

Quality Score is 39: Emerging (early traction worth watching). For a Education app, that means early traction worth watching. 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

$5.0K

per month

→

12-mo forecast

$5.2K – $10.8K

per month

→

24-mo forecast

$6.4K – $19.2K

per month

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

Run free AI audit →

Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

1 snapshots on record

idle

Rating

2.7

Reviews

330 reviews

Forecast Revenue / mo

$5.0K

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$145K

↳ What it cost to build · not monthly revenue

Likely range $110K – $195K

$25K · MVP floor $100K · indie scale $500K+ · studio build

📈 Pays back in ~2.4y 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
⚙ Education complexity ×1.20	+$10K
🌐 Cross-platform reach (iOS + Android)	+$33K
⚙ 8.7y maintenance × ~1-person team	+$52K

Total estimate $145K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$75K

↳ What it would sell for · not monthly revenue

Marketplace range $50K – $100K · 14× MRR multiple

💸 ~0.5× 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
📅 8.7y proven track record	+20%
⭐ ★ rating < 3.5 (weak)	-18%
🏷 Education category multiple	+6%
⭐ Small user base (<1K ratings)	-8%

Final multiple 14× MRR

👥 Estimated audience size

19K

Lifetime downloads (US-equivalent)

Monthly active

2.0K

Daily active

600

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
📅 8.7y of rating accumulation	-30%
🔁 Education D30 retention	18%
📍 DAU / MAU stickiness	0.30

DAU / MAU 30% 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	Education
📦 Compact Android bundle	→ Native Kotlin

💀 Maintenance status

Likely abandoned

95%

Last shipped 2023-08-31 · 1125 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

📅 3y+ since last update	Likely abandoned
👥 Small user base (330 ratings) + 8.7y old	+10% (solo-project pattern)

Verdict Likely abandoned

🔬

How we forecast this revenue

MEDIUM CONFIDENCE

Baseline

$5.0K/mo · ML-estimated from 234 triggers

Growth rate

+4.0% MoM · MID tier baseline (compound monthly)

Direction

Headwinds: rating drift may slow acquisition

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

Stalled · 39/100MID TIERno growth momentum

Growth Velocity

5.0

Founder Strength

5.3

Product Quality

3.7

Revenue Strength

3.7

Monetization Maturity

1.0

Defensibility

7.2

Market Position

0.0

Operational Safety

5.0

💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
⭐ Quality: 2.67★ across 330 reviews — weak — significant quality concerns.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: ⚠ last update 1124d ago — possibly dormant.
⚠️ Risk: Elevated — dormant (1124d since update).

🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.

💵 For acquirers: Estimated asking range 18-32× monthly = $90K-$160K.

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:

bugsREVIEW		−$1,800
5 starREVIEW		+$1,800
Below-average rating (2.7★)METRIC		−$1,500
Mature app (8y old)METRIC		+$1,500
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (330 ratings)METRIC		+$400

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: DK 15 Minute Language Course
Developer: Dorling Kindersley
Bundle ID: com.dk.dk15minutesapp
App Store URL: Open in App Store
Category: Education
Content rating: Not found
Languages: Not found

Company

Website: www.dk.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: $5.0K/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

DK’s 15 Minutes books are perfect for busy people who want to learn a new language fast. These fun, user-friendly books help you teach yourself a new language in just 12 weeks. 

This updated 15 Minute app provides offline access to all the audio recordings that accompany the latest editions of the printed books. It contains more than 35 minutes of high-quality audio per language, allowing you to hear all the words and phrases in the books spoken by native speakers. Use the app alongside each book's easy-to-use pronunciation guide to perfect your pronunciation.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v2.0.3🔄 updated 3y ago📂 Education💰 Free🚀 Launched 2018 (8y old)

🧪

Tech & Domain Intel — dk.com

Tech stack: Microsoft 365 · Anthropic · Brevo (formerly Sendinblue) · Google Workspace · OpenAI · Zoho

Derived from public RDAP + DNS TXT records (no scraping, no login).

🔔

Track this app’s revenue

FREE

Get an email when revenue moves by your threshold. No spam, unsubscribe in one click.

📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for DK 15 Minute Language Course: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →