HotLog - Saunatagebuch
60
Quality Score
Solid
HotLog - Saunatagebuch
by Thomas Dori
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
$5.6K – $11.7K
per month
→
24-mo forecast
$6.9K – $20.7K
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
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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
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$5.1K – $8.5K
12 months
$5.6K – $11.7K
24 months
$6.9K – $20.7K
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 · 44/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
3.3
Product Quality
6.5
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
3.9
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $8K/mo · MID 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 · v1.7
Custom Sauna Types
You can now create your own sauna types and track sessions your way. Add favorites like Biosauna, Crystal Sauna, or any custom sauna experience.
You can now create your own sauna types and track sessions your way. Add favorites like Biosauna, Crystal Sauna, or any custom sauna experience.
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
- 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
- $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
- Not found
- Not found
- Phone
- Not found
- Contact page
- apps.apple.com/us/app/foxtale-self-he…
- About page
- apps.apple.com/us/iphone/story/id1896…
📈Ratings growth501 ratings+50000% lifetimeShow 3-year history estimate ▾
Tracked (30 weeks) Pre-tracking estimate (35 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%)
🚀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
There’s something uniquely satisfying about stepping into a hot sauna, steam bath, or infrared room and leaving feeling refreshed, relaxed, and recharged. Beyond relaxation, regular sauna sessions may also offer a range of health and wellness benefits.
HotLog is your personal companion for tracking sauna, steam bath, infrared and cold plunge sessions. Easily record all the details that matter, including:
• Sauna Type
• Temperature
• Humidity
• Duration
• Aufguss Sessions
• Cold Showers & Cold Plunges… View full description on the official store →
HotLog is your personal companion for tracking sauna, steam bath, infrared and cold plunge sessions. Easily record all the details that matter, including:
• Sauna Type
• Temperature
• Humidity
• Duration
• Aufguss Sessions
• Cold Showers & Cold Plunges… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 18 MB🔞 4+📱 iOS 18.0+🔖 v1.7🔄 updated 0d ago🌐 EN, DE📂 Health & Fitness💰 Paid
📅
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
🔧
Shipped update — v1.6 → v1.7
→ 30 days after: reviews +14 high confidence
2026-05
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +5 high confidence
2026-05
💲
Went paid — introduced $1.99 price point
→ 30 days after: reviews +5 high confidence
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
→ 30 days after: rating +0.14★ high confidence
2021-01
⭐
Rating ↓ 4.33 → 3.56 (dropped 0.77★)
→ 30 days after: rating +0.14★ high confidence
2021-01
⭐
Rating ↓ 4.33 → 3.86 (dropped 0.47★)
→ 30 days after: rating −0.63★ high confidence
2020-03
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
2019-09
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.38095★ | 21 | 4.38095★ this version |
| 🇧🇷 BR | 5★ | 1 | 5★ this version |
| 🇨🇦 CA | 4.64706★ | 34 | 4.64706★ this version |
| 🇩🇪 DE | 4.51515★ | 66 | 4.51515★ this version |
| 🇫🇷 FR | 5★ | 1 | 5★ this version |
| 🇬🇧 GB | 4.70833★ | 24 | 4.70833★ this version |
| 🇮🇳 IN | 4.66667★ | 3 | 4.66667★ this version |
| 🇯🇵 JP | 5★ | 1 | 5★ this version |
| 🇺🇸 US | 4.61702★ | 517 | 4.61702★ this version |
🔔
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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.