Gym Workout - Build Muscle
63
Quality Score
Solid
✍️ bumetric analysis
“
Gym Workout - Build Muscle is an iOS app from KFitness Studio in the Health & Fitness category, currently rated 4.6★ across 2,085 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 63: Solid (established niche player). For a Health & Fitness 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
$1.2M
per month
→
12-mo forecast
$1.3M – $2.0M
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$140K
↳ What it cost to build · not monthly revenue
Likely range $105K – $190K
$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 |
| 💎 In-app purchase plumbing | +$9K |
| 📦 Asset bundle (389 MB) | +$40K |
| ⚙ Health & Fitness complexity ×1.40 | +$39K |
Total estimate
$140K
👥 Estimated audience size
145K
Lifetime downloads (US-equivalent)
Monthly active
31K
Daily active
11K
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
| 📲 Health & Fitness engagement | ~70 installs / rating |
| 🔁 Health & Fitness D30 retention | 22% |
| 📍 DAU / MAU stickiness | 0.35 |
DAU / MAU
35% sticky
🔬
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 – $2.0M
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 · 63/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
5.5
Product Quality
8.3
Revenue Strength
6.1
Monetization Maturity
5.0
Defensibility
9.1
Market Position
2.0
Operational Safety
9.0
- 💰 Revenue: Healthy — $480K - $2640K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.63★ across 2,085 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 239d ago — slow cadence.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 For competitors: Strong subscription moat. Hard to outcompete on retention. Better angle: free alternative with one-time purchase, or feature parity for an underserved sub-niche.
💵 For acquirers: Estimated asking range 18-32× monthly = $21.6M-$38.4M.
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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Excellent rating (4.6★)METRIC | +$2,200 | |
| Low install base (2,085 ratings)METRIC | +$1,500 | |
| Multilingual (35 languages)METRIC | +$1,500 | |
| Established app (6y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
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.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Gym Workout - Build Muscle
- Developer
- KFitness Studio
- Bundle ID
- com.taka.fitness
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- AR, BN, BG, CA, HR, CS, DA, NL, EN, FI, FR, DE, EL, HE, HI, HU, ID, IT, JA, KO, MS, NB, PL, PT, RO, RU, ZH, SK, ES, SV, TH, ZH, TR, UK, VI
Company
- Website
- kfitness.app
- Tagline
- Top Fitness Apps for Training
- Description
- kfitness.app
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $86/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- $4.99 - $24.99 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.
📈Ratings growth2,085 ratings+208400% lifetimeShow 3-year history estimate ▾
Tracked (9 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
🚀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
Fitness in Action is a 3D personal trainer which will provide you with a series of programs and exercises that will help you achieve all your goals. Each exercise comes with a detailed description, images and a video to help you build your perfect gym workout routine from scratch – tailored to get the results you want. All exercises are designed by 3D modeling with Full HD resolution.
Why pay for expensive instructors when you can do it yourself with our video workouts, workout plans, and workout programs? The only app you need for your workouts and physical evolution.
FEATURES:… View full description on the official store →
Why pay for expensive instructors when you can do it yourself with our video workouts, workout plans, and workout programs? The only app you need for your workouts and physical evolution.
FEATURES:… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 389 MB🔞 4+📱 iOS 12.4+🔖 v1.2.3🔄 updated 0d ago🌐 AR, BN, BG, CA, HR +30📂 Health & Fitness💰 Paid📺 Ad-supported💎 IAP $4.99 - $24.99 per item
📅
What Worked™ · Development Pipeline
10 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 →
2026-06
📸
Refreshed store screenshots — 4 of 8 updated
→ 30 days after: reviews +50 high confidence
2026-06
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +50 high confidence
2026-05
🔄
Monetization changed: freemium → free
→ 30 days after: revenue −$86/mo · reviews +1,100 high confidence
2026-05
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: revenue −$86/mo · reviews +1,100 high confidence
2026-03
⭐
Rating ↑ 3.80 → 4.70 (improved 0.90★)
2026-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2024-01
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
2023-01
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2021-04
⭐
Rating ↓ 5.00 → 3.00 (dropped 2.00★)
2020-03
🚀
First tracked snapshot — initial data captured
📸
Store Page History
4 SCREENSHOT CHANGESEvery 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.
2 ver.
2026-05-12
2026-06-24
Slot 2
2 ver.
2 ver.
2026-05-12
2026-06-24
Slot 3
2 ver.
2 ver.
2026-05-12
2026-06-24
Slot 4
2 ver.
2 ver.
2026-05-12
2026-06-24
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.71698★ | 53 | 4.71698★ this version |
| 🇧🇷 BR | 4.85914★ | 717 | 4.85914★ this version |
| 🇨🇦 CA | 4.62711★ | 59 | 4.62711★ this version |
| 🇩🇪 DE | 4.48571★ | 105 | 4.48571★ this version |
| 🇫🇷 FR | 4.56221★ | 217 | 4.56221★ this version |
| 🇬🇧 GB | 4.58824★ | 68 | 4.58824★ this version |
| 🇮🇳 IN | 4.56011★ | 757 | 4.56011★ this version |
| 🇯🇵 JP | 4.55172★ | 29 | 4.55172★ this version |
| 🇺🇸 US | 4.66981★ | 951 | 4.66981★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Gym Workout - Build Muscle: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by KFitness Studio
View all →📦 Portfolio summaryINDIE studio
6apps·$1K/mocombined
✓ Diversified — top app contributes 28%; risk spread across portfolio
About this analysis
Why medium confidence: 2,085 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Gym Workout - Build Muscle make per month?▴
Based on our ML-calibrated revenue forecast, Gym Workout - Build Muscle earns approximately $86/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.
What apps are like Gym Workout - Build Muscle?▴
Browse the full Health & Fitness 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.
Who makes Gym Workout - Build Muscle?▴
Gym Workout - Build Muscle is published by KFitness Studio 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 Gym Workout - Build Muscle's BU Score?▴
Gym Workout - Build Muscle has a BU Score of 63/100 (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.