How much does Internal combustion engine make per month?

Based on our ML-calibrated revenue forecast, Internal combustion engine 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 Internal combustion engine profitable?

With estimated build cost $130K and monthly revenue $5.0K, Internal combustion engine looks break-even-grade — payback period sits around 2.2 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.

How many users does Internal combustion engine have?

Estimated audience: ~35K lifetime downloads, ~3K monthly active users, and ~760 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 Internal combustion engine?

Browse the full Auto & Vehicles 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 Internal combustion engine built with?

Our heuristic places Internal combustion engine 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 Internal combustion engine still actively maintained?

Maintenance status: Likely abandoned (82% abandonment risk). Last shipped version was 1+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

How much would Internal combustion engine sell for?

Estimated acquisition value: $175K (marketplace range $125K – $225K). Calculated as 36× 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 Internal combustion engine last updated?

Internal combustion engine last shipped a new version on 2025-02-07 — more than 1 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes Internal combustion engine?

Internal combustion engine is published by 99 Dictionaries: The world of terms 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 Internal combustion engine's BU Score?

Internal combustion engine has a BU Score of 60/100 (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.

Internal combustion engine

Quality Score

Solid

Internal combustion engine

Name: Internal combustion engine — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Internal combustion engine revenue, Internal combustion engine app analytics, mobile app revenue estimate, Auto & Vehicles revenue, Android app revenue

by 99 Dictionaries: The world of terms

Medium confidence

4.7 Google Play rating

✍️ Bumetric analysis

“

Internal combustion engine is an Android app from 99 Dictionaries: The world of terms in the Auto & Vehicles category, currently rated 4.7★ across 336 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Quality Score is 60: Solid (established niche player). For a Auto & Vehicles 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

$5.0K

per month

→

12-mo forecast

$5.2K – $10.8K

per month

→

24-mo forecast

$6.4K – $19.2K

per month

MID 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

1 snapshots on record

idle

Rating

4.7

Reviews

336 reviews

Forecast Revenue / mo

$5.0K

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$130K

↳ What it cost to build · not monthly revenue

Likely range $100K – $175K

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

📈 Pays back in ~2.2y 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
💎 In-app purchase plumbing	+$9K
🌐 Cross-platform reach (iOS + Android)	+$32K
⚙ 6.5y maintenance × ~1-person team	+$38K

Total estimate $130K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$175K

↳ What it would sell for · not monthly revenue

Marketplace range $125K – $225K · 36× MRR multiple

💸 ~1.3× build cost (break-even+)

Synthetic estimate. Multiple band derived from iap / freemium model + 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

💎 IAP / freemium model base	28× MRR
📅 6.5y proven track record	+20%
⭐ ★ rating ≥ 4.7 (premium)	+15%
⭐ Small user base (<1K ratings)	-8%

Final multiple 36× MRR

👥 Estimated audience size

35K

Lifetime downloads (US-equivalent)

Monthly active

3.8K

Daily active

760

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

📲 Auto & Vehicles engagement	~150 installs / rating
📅 6.5y of rating accumulation	-30%
🔁 Auto & Vehicles D30 retention	15%
📍 DAU / MAU stickiness	0.20

DAU / MAU 20% 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	Auto & Vehicles
📦 Compact Android bundle	→ Native Kotlin

💀 Maintenance status

Likely abandoned

82%

Last shipped 2025-02-07 · 618 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

📅 1y 8mo since last update	Likely deprioritized
👥 Small user base (336 ratings) + 6.5y 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)

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 · 53/100MID TIERunderperforming peers

Growth Velocity

5.0

Founder Strength

5.9

Product Quality

6.6

Revenue Strength

3.7

Monetization Maturity

5.0

Defensibility

9.1

Market Position

0.0

Operational Safety

7.0

💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
⭐ Quality: 4.7★ across 336 reviews — solid.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: ⚠ last update 613d ago — possibly dormant.
⚠️ Risk: Moderate — dormant (613d 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 = $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 4 of 4 triggers

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

Excellent rating (4.7★)METRIC		+$2,200
Established app (6y old)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (336 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: Internal combustion engine
Developer: 99 Dictionaries: The world of terms
Bundle ID: com.dictionary.auto.engine.internalcombustionengine
App Store URL: Open in App Store
Category: Auto & Vehicles
Content rating: Not found
Languages: Not found

Company

Website: c49caa863.app-ads-txt.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: $2.49 per item

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

A big technical encyclopedia "Internal combustion engine": gasoline engine, diesel engine, cylinder head, combustion chamber, dohc, spark plug, fuel pump, injection system, exhaust system.

An internal combustion engine is a type of heat engine in which the fuel mixture is burned inside the engine in a combustion chamber. Such an engine converts the energy of fuel combustion into mechanical work.

In spark ignition engines, such as petrol (gasoline) engines, the combustion chamber is usually located in the cylinder head.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v3.9.9🔄 updated 1y ago📂 Auto & Vehicles💰 Free📺 Ad-supported💎 IAP $2.49 per item🚀 Launched 2020 (6y old)

🧪

Tech & Domain Intel — c49caa863.app-ads-txt.com

Mail provider: Google Workspace
Tech stack: Google Workspace

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

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

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

Read deep-dive →