HotLog - Saunatagebuch
60
Quality Score
Solid
HotLog - Saunatagebuch
Medium confidence
✍️ bumetric analysis
“
HotLog - Saunatagebuch is an iOS app from Thomas Dori in the Health & Fitness category, currently rated 4.6★ across 501 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 60: 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
$5.4K
per month
→
12-mo forecast
$4.7K – $17.0K
per month
→
24-mo forecast
$4.4K – $39.3K
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$70K
↳ What it cost to build · not monthly revenue
Likely range $50K – $95K
$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 |
| ⚙ Health & Fitness complexity ×1.40 | +$20K |
Total estimate
$70K
👥 Estimated audience size
35K
Lifetime downloads (US-equivalent)
Monthly active
7.7K
Daily active
2.6K
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
34% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.4K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
6 months
$4.6K – $10.7K
12 months
$4.7K – $17.0K
24 months
$4.4K – $39.3K
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 · 42/100INDIE TIERexpected for tierRevenue Strength
3.7
Product Quality
6.5
Market Position
0.0
Growth Velocity
5.0
Defensibility
3.9
Operational Safety
10.0
Founder Strength
3.3
Monetization Maturity
1.0
- 💰 Revenue: Modest — $2K - $13K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.62★ across 501 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 = $97K-$172K.
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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| Established app (7y old)METRIC | +$800 | |
| Early-stage install base (501 ratings)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 · v1.6
Finally adjusted the UI to iOS 26 and fixed some warnings and bugs under the hood.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- HotLog - Saunatagebuch
- Developer
- Thomas Dori
- Bundle ID
- app.hotlog
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN, DE
Company
- Website
- Not found
- Tagline
- Track It When It’s Hot
- Description
- Track your sessions in the sauna, steam bath, infrared sauna, hammam, or any other hot room. HotLog will then give you insights into your habits.
- 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
- $201/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
- Socials
- facebook facebook.com/hotlogapp · twitter twitter.com/laukkanenjari · youtube youtube.com/watch?v=jL7vVG_CFWA
- Not found
- Phone
- Not found
- Contact page
- hotlog.app/support
- About page
- Not found
📈Ratings growth501 ratings+50000% lifetimeShow 3-year history estimate ▾
Tracked (34 weeks) Pre-tracking estimate (37 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.
💰Pricing History$0.00 → $1.99 (+0%)
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
Nothing better than sitting naked in a hot and humid room with strangers just to sweat like you never thought you could. Visiting the sauna, steam bath, or infrared room is not only relaxing but can also have health benefits.
HotLog is your digital companion to tracking your sauna, steam bath, and infrared sessions. HotLog allows you to easily capture all the important details of your sessions like:
- Sauna Type
- Temperature
- Humidity
- Duration
- Aufguss
- Cold Shower / Plunge… View full description on the official store →
HotLog is your digital companion to tracking your sauna, steam bath, and infrared sessions. HotLog allows you to easily capture all the important details of your sessions like:
- Sauna Type
- Temperature
- Humidity
- Duration
- Aufguss
- Cold Shower / Plunge… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 18 MB🔞 4+📱 iOS 18.0+🔖 v1.6🔄 updated 0d ago🌐 EN, DE📂 Health & Fitness💰 Paid
📅
What Worked™ · Development Pipeline
8 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 500 ratings — social-proof flywheel kicking in
2026-05
💲
Went paid — introduced $1.99 price point
2026-03
⭐
Rating ↑ 3.42 → 4.50 (improved 1.08★)
2026-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2021-02
📈
Crossed 10 ratings — social-proof flywheel kicking in
2021-01
⭐
Rating ↓ 4.33 → 3.86 (dropped 0.47★)
2020-03
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
2019-09
🚀
First tracked snapshot — initial data captured
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for HotLog - Saunatagebuch: 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: 501 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does HotLog - Saunatagebuch make per month?▴
Based on our ML-calibrated revenue forecast, HotLog - Saunatagebuch earns approximately $200/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 HotLog - Saunatagebuch?▴
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 HotLog - Saunatagebuch?▴
HotLog - Saunatagebuch is published by Thomas Dori 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 HotLog - Saunatagebuch's BU Score?▴
HotLog - Saunatagebuch 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.