GymBook ・ Krafttraining
75
Quality Score
Strong
GymBook ・ Krafttraining
Medium confidence
✍️ bumetric analysis
“
GymBook ・ Krafttraining is an iOS app from Appwise GmbH in the Health & Fitness category, currently rated 4.8★ across 2,353 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 75: Strong (healthy traction). For a Health & Fitness app, that means healthy traction. 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
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$125K
↳ What it cost to build · not monthly revenue
Likely range $95K – $170K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Pays back in ~5 months 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 |
| 📦Asset bundle (412 MB) | +$40K |
| ⚙Health & Fitness complexity ×1.40 | +$36K |
Total estimate$125K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$450K
↳ What it would sell for · not monthly revenue
Marketplace range $325K – $600K · 19× MRR multiple
💸~3.6× return on build cost
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 |
| ⭐★ rating ≥ 4.7 (premium) | +15% |
| 🏷Health & Fitness category multiple | +10% |
Final multiple19× MRR
👥 Estimated audience size
160K
Lifetime downloads (US-equivalent)
Monthly active
35K
Daily active
12K
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 / MAU34% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$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 · 50/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
5.4
Product Quality
8.6
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
4.5
Market Position
1.5
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.79★ across 2,353 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: dev shipping weekly.
- ⚠️ 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 = $90K-$160K. Portfolio play ($23K/mo combined) commands premium.
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 15 of 15 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Excellent rating (4.8★)METRIC | +$2,200 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| great valueREVIEW | +$1,600 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (2,353 ratings)METRIC | +$1,500 | |
| Mature app (13y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| annoying adsREVIEW | −$1,100 | |
| too expensiveREVIEW | −$1,000 | |
| support teamREVIEW | +$900 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Localized (7 languages)METRIC | +$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.
🆕 What's New · v7.0.39
⎯ In this release
GymBook for Apple Watch now shows exercise images in the list of exercises inside a workout.
When opening an exercise, the image of the exercise is now animated as well.… Full release notes →
GymBook for Apple Watch now shows exercise images in the list of exercises inside a workout.
When opening an exercise, the image of the exercise is now animated as well.… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- GymBook ・ Krafttraining
- Developer
- Appwise GmbH
- Bundle ID
- salvatore.f.rocca.GymBook
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, PT, RU, ES
Company
- Website
- Not found
- Tagline
- GymBook - Strength training planner, logger and analyzer
- Description
- Gym Book is your strength training planner, logger and analyzer. You can create and manage your workouts, log your progress and analyze your performance.
- 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
- $23.6K/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- 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.
📈Ratings growth2,353 ratings+10% lifetimeShow 3-year history estimate ▾
Tracked (57 weeks) Pre-tracking estimate (33 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
Here is GymBook, your fitness app to efficiently create, log and analyze your workouts at the gym - all in a beautiful and minimalist user interface.
MANAGE YOUR WORKOUTS
• Create your workout with your own exercises or choose from the 50+ simple exercises with animated images and visualizations of the affected primary and secondary muscle groups
• Group and sort your exercises within a workout
• Define the sets, weight and reps you want to perform for each exercise
• Define different settings for your sets of an exercise (e.g. for warm up sets or pyramid training)… View full description on the official store →
MANAGE YOUR WORKOUTS
• Create your workout with your own exercises or choose from the 50+ simple exercises with animated images and visualizations of the affected primary and secondary muscle groups
• Group and sort your exercises within a workout
• Define the sets, weight and reps you want to perform for each exercise
• Define different settings for your sets of an exercise (e.g. for warm up sets or pyramid training)… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 412 MB🔞 4+📱 iOS 16.4+🔖 v7.0.39🔄 updated 0d ago🌐 EN, FR, DE, IT, PT +2📂 Health & Fitness💰 Paid
📅
What Worked™ · Development Pipeline
6 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 →
2026-05
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
2017-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
2016-06
📈
Crossed 50 ratings — social-proof flywheel kicking in
2015-07
📈
Crossed 10 ratings — social-proof flywheel kicking in
2015-05
🚀
First tracked snapshot — initial data captured
🔎
ASO Keyword Positions
BEST RANK #18Ranked for 1 App Store search query in our last keyword sweep. Lower position = closer to the top.
workout tracker·#18🇺🇸
Last sweep: 2026-05-19 · iTunes Search API
🌍
Multi-Country Performance
Available in 5 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇨🇦 CA | 4.70489★ | 532 | 4.70489★ this version |
| 🇩🇪 DE | 4.76552★ | 5,011 | 4.76552★ this version |
| 🇫🇷 FR | 4.75779★ | 1,602 | 4.75779★ this version |
| 🇬🇧 GB | 4.79214★ | 611 | 4.79214★ this version |
| 🇺🇸 US | 4.78634★ | 2,359 | 4.78634★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for GymBook ・ Krafttraining: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why medium confidence: 2,353 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does GymBook ・ Krafttraining make per month?▴
Based on our ML-calibrated revenue forecast, GymBook ・ Krafttraining earns approximately $23K/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 GymBook ・ Krafttraining?▴
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 GymBook ・ Krafttraining?▴
GymBook ・ Krafttraining is published by Appwise GmbH 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 GymBook ・ Krafttraining's BU Score?▴
GymBook ・ Krafttraining has a BU Score of 75/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.