RacquetTune - String Tension
60
Quality Score
Solid
RacquetTune - String Tension
Medium confidence
✍️ bumetric analysis
“
RacquetTune - String Tension is an iOS app from Sten Kaiser, currently rated 4.6★ across 469 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Quality Score is 60: Solid (established niche player). For an app like this, 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
$500
per month
→
12-mo forecast
$437 – $1575
per month
→
24-mo forecast
$405 – $3644
per month
INDIE 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
$50K
↳ What it cost to build · not monthly revenue
Likely range $40K – $70K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
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 |
Total estimate
$50K
👥 Estimated audience size
70K
Lifetime downloads (US-equivalent)
Monthly active
10K
Daily active
2.1K
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
| 📲 category engagement | ~150 installs / rating |
| 🔁 category D30 retention | 15% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
20% sticky
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
6 months
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Early-stage solo · 47/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
6.0
Product Quality
6.5
Revenue Strength
2.7
Monetization Maturity
1.0
Defensibility
6.0
Market Position
0.0
Operational Safety
10.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.63★ across 469 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ 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 = $9K-$16K. Portfolio play ($21K/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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($2.99)METRIC | +$2,800 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| Mature app (16y old)METRIC | +$1,500 | |
| Early-stage install base (469 ratings)METRIC | +$400 | |
| Single-language (English only)METRIC | −$400 |
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 · v7.7
This update from Apple will improve the functionality of this app. No new features are included.
- Fixed the problem with detecting sound on iOS 26.4 and later.
- Fixed an issue with contributing strings to the online database.
- Fixed the problem with detecting sound on iOS 26.4 and later.
- Fixed an issue with contributing strings to the online database.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- RacquetTune - String Tension
- Developer
- Sten Kaiser
- Bundle ID
- racquetTune
- App Store URL
- Open in App Store
- Category
- Not found
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- Not found
- Top-grossing rank
- 🇮🇳#58 /99
- 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 growth469 ratings+-1% lifetimeShow 3-year history estimate ▾
Tracked (0 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇮🇳
IN
Top-grossing rank: #58 / 99
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#58 now · best #55 · worst #63
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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
Listen to your racquet and perfect your game!
RacquetTune ensures that your racquet is ideally suited to your style of play. Simple and straightforward to use, the app uses the sound generated by tapping the strings to calculate the tension with high accuracy. In addition, the interactive swingweight calculator aids in customizing your racquet to fit your own stroke pattern, while the stiffness calculator allows you to simulate different racquet configurations.… View full description on the official store →
RacquetTune ensures that your racquet is ideally suited to your style of play. Simple and straightforward to use, the app uses the sound generated by tapping the strings to calculate the tension with high accuracy. In addition, the interactive swingweight calculator aids in customizing your racquet to fit your own stroke pattern, while the stiffness calculator allows you to simulate different racquet configurations.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 11 MB🔞 4+📱 iOS 12.0+🔖 v7.7🔄 updated 0d ago🌐 EN💰 Free
🔔
Track this app’s revenue
FREEGet an email when revenue moves by your threshold. No spam, unsubscribe in one click.
📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for RacquetTune - String Tension: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Sten Kaiser
View all →📦 Portfolio summaryINDIE studio
3apps·$21K/mocombined
Lead-app heavy — top app contributes 60%
About this analysis
Why medium confidence: 469 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
2 answers · auto-generated from this app's public dataWho makes RacquetTune - String Tension?▴
RacquetTune - String Tension is published by Sten Kaiser 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 RacquetTune - String Tension's BU Score?▴
RacquetTune - String Tension 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.