How much does Gravity Train VR make per month?

Based on our ML-calibrated revenue forecast, Gravity Train VR 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 Gravity Train VR profitable?

With estimated build cost $230K and monthly revenue $5.0K, Gravity Train VR looks slow ROI — payback period is around 3.8 years 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 Gravity Train VR have?

Estimated audience: ~79K 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 Gravity Train VR?

Browse the full Adventure 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 Gravity Train VR built with?

Our heuristic places Gravity Train VR 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 Gravity Train VR still actively maintained?

Maintenance status: At risk (50% abandonment risk). Last shipped version was 9 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

How much would Gravity Train VR sell for?

Estimated acquisition value: $50K (marketplace range $45K – $75K). Calculated as 12× 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 Gravity Train VR last updated?

Gravity Train VR last shipped a new version on 2025-12-12 — 9 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes Gravity Train VR?

Gravity Train VR is published by FIBRUM 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 Gravity Train VR's BU Score?

Gravity Train VR has a BU Score of 40/100 (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.

Gravity Train VR

Quality Score

Emerging

Gravity Train VR

Name: Gravity Train VR — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Gravity Train VR revenue, Gravity Train VR app analytics, mobile app revenue estimate, Adventure revenue, Android app revenue

by FIBRUM

Medium confidence

2.6 Google Play rating

✍️ Bumetric analysis

“

Gravity Train VR is an Android app from FIBRUM in the Adventure category, currently rated 2.6★ across 809 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 40: Emerging (early traction worth watching). For a Adventure 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

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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

2.6

Reviews

809 reviews

Forecast Revenue / mo

$5.0K

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$230K

↳ What it cost to build · not monthly revenue

Likely range $170K – $310K

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

📈 Pays back in ~3.8y 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
⚙ Adventure complexity ×2.10	+$55K
🌐 Cross-platform reach (iOS + Android)	+$58K
⚙ 11.1y maintenance × ~1-person team	+$66K

Total estimate $230K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$50K

↳ What it would sell for · not monthly revenue

Marketplace range $45K – $75K · 12× MRR multiple

💸 ~0.2× 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
📅 11.1y proven track record	+20%
⭐ ★ rating < 3.5 (weak)	-18%
🏷 Adventure category multiple	-15%
⭐ Small user base (<1K ratings)	-8%

Final multiple 12× MRR

👥 Estimated audience size

79K

Lifetime downloads (US-equivalent)

Monthly active

4.2K

Daily active

1.2K

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

📲 Adventure engagement	~140 installs / rating
📅 11.1y of rating accumulation	-30%
🔁 Adventure D30 retention	12%
📍 DAU / MAU stickiness	0.30

DAU / MAU 29% 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	Adventure
📦 Tiny game bundle	→ Native 2D engine

💀 Maintenance status

At risk

50%

Last shipped 2025-12-12 · 285 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

📅 9 months since last update

Concerning gap

Verdict At risk

🔬

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

Below median · 43/100MID TIERunderperforming peers

Growth Velocity

5.0

Founder Strength

6.2

Product Quality

3.6

Revenue Strength

3.7

Monetization Maturity

1.0

Defensibility

7.5

Market Position

0.0

Operational Safety

7.0

💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
⭐ Quality: 2.57★ across 809 reviews — weak — significant quality concerns.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: last update 281d ago — slow cadence.
⚠️ Risk: Moderate — 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.

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 8 of 8 triggers

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

5 starREVIEW		+$1,800
Below-average rating (2.6★)METRIC		−$1,500
Mature app (11y old)METRIC		+$1,500
freemiumREVIEW		+$1,400
slowREVIEW		−$1,200
free trialREVIEW		+$1,200
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (809 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: Gravity Train VR
Developer: FIBRUM
Bundle ID: com.fibrum.gravitytrainvr
App Store URL: Open in App Store
Category: Adventure
Content rating: Not found
Languages: Not found

Company

Website: www.fibrum.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

Welcome aboard a gravity train able to take you to any city of the planet in a couple of minutes. Please, fasten the seatbelt as we’ve got one hell of a ride ahead! 

Look at the lever to start the ride. 

Compatible with Virtual Reality (VR) glasses

The application requires a virtual reality headset (Google Cardboard-like): FIBRUM VR, ANTVR, Carl Zeiss VR One GX, ColorCross, Cynoculars, Durovis Dive, Fove 0, FreeFly, Homido center (V2), Merge VR, Nibiru, Puyo Box, Refugio 3D, Stooksy, Tepoinn 3D, VR KiX, VR Smartview, VR View-Master DLX, VRTRIA, VRTX One, Xiaomi VR 3D Glasses.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v2.0🔄 updated 9mo ago📂 Adventure💰 Free📺 Ad-supported🚀 Launched 2015 (11y old)

🧪

Tech & Domain Intel — fibrum.com

Mail provider: 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 Gravity Train VR: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →