Logbook
56
Quality Score
Solid
Logbook
Low confidence
✍️ bumetric analysis
“
Logbook is an iOS app from Florian Kriesche in the Productivity category, currently rated 4.4★ across 21 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 56: Solid (established niche player). For a Productivity 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID tierFREE
💡 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
$55K
↳ What it cost to build · not monthly revenue
Likely range $40K – $75K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~7 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 (53 MB) | +$1K |
| ⚙ Productivity complexity ×1.10 | +$5K |
Total estimate
$55K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$125K
↳ What it would sell for · not monthly revenue
Marketplace range $100K – $175K · 16× MRR multiple
💸
~2.3× 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 ≥ 4.4 (solid) | +8% |
| 🏷 Productivity category multiple | +8% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
16× MRR
🔬
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)
Direction
Headwinds: rating drift may slow acquisition
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 · 44/100MID TIERFREE (NO MONETIZATION)underperforming peersGrowth Velocity
5.0
Founder Strength
5.6
Product Quality
3.5
Revenue Strength
3.7
Monetization Maturity
0.5
Defensibility
6.0
Market Position
2.0
Operational Safety
9.1
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.43★ across 21 reviews — weak — significant quality concerns.
- 📍 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 = $90K-$160K. Portfolio play ($8K/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 6 of 6 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 | |
| Mature app (13y old)METRIC | +$1,500 | |
| Multilingual (19 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Good rating (4.4★)METRIC | +$800 | |
| Pre-traction phase (21 ratings)METRIC | −$300 |
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 · v2.85
New:
- Wind arrows now step up in 5-knot increments instead of Beaufort scales.
- When you make several quick manoeuvres, a confirmation button appears at the top so you do not need to scroll.
Fixed:
- If the location field was empty, the app now shows light text in Dark Mode.… Full release notes →
- Wind arrows now step up in 5-knot increments instead of Beaufort scales.
- When you make several quick manoeuvres, a confirmation button appears at the top so you do not need to scroll.
Fixed:
- If the location field was empty, the app now shows light text in Dark Mode.… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Logbook
- Developer
- Florian Kriesche
- Bundle ID
- de.floq.Logbook
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- HR, CS, DA, NL, EN, FI, FR, DE, IT, NB, PL, PT, RO, RU, ZH, SK, ES, SV, UK
Company
- Website
- Not found
- Tagline
- Introducing Logbook for your iPhone...
- Description
- Logbook App is an automated electronic logbook on your iPhone. Logbook App is designed by sailors for sailors, a powerboat owner will find it worthwhile as well.
- 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
- $8.1K/mo
- Top-grossing rank
- Outside top 100 in US Productivity
- 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 growth21 ratings+2000% lifetimeShow 3-year history estimate ▾
Tracked (13 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.
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
The Logbook App is an automated electronic logbook for your iPhone or iPad, you can add entries manually or let your vessel's log fill in automatically in the background. This logbook app was developed by sailors for sailors, but also powerboaters will get their money's worth.
FEATURES
# Automatically create logbook entries while you enjoy sailing
# Automatic retrieval of weather data for each entry from the internet (choose between different weather providers)
- Weather condition e.g. sunny, fog, thunderstorm...
- Air pressure (also offline if the device has a barometer)… View full description on the official store →
FEATURES
# Automatically create logbook entries while you enjoy sailing
# Automatic retrieval of weather data for each entry from the internet (choose between different weather providers)
- Weather condition e.g. sunny, fog, thunderstorm...
- Air pressure (also offline if the device has a barometer)… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 53 MB🔞 4+📱 iOS 16.6+🔖 v2.85🔄 updated 0d ago🌐 HR, CS, DA, NL, EN +14📂 Productivity💰 Paid
📅
What Worked™ · Development Pipeline
5 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
🔄
Monetization changed: paid → free
2026-03
⭐
Rating ↑ 4.33 → 4.70 (improved 0.37★)
2026-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2018-10
⭐
Rating ↓ 5.00 → 4.20 (dropped 0.80★)
2015-02
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 76 reviews across 7 markets● 41% positive · ● 13% neutral · ● 46% negative · Rating drift: +0.21★ (improving — recent 50: 4.64★ vs lifetime: 4.43★)
Sentiment by country (−1 to +1)
🇬🇧 GB
+0.96
🇺🇸 US
+0.92
🇨🇦 CA
+0.84
🇧🇷 BR
+0.72
🇦🇺 AU
+0.61
🇫🇷 FR
+0.29
🇩🇪 DE
-0.45
Top praise themes
ich bin ×10 habe ich ×8 habe die ×7 für die ×7 ich die ×7 auf dem ×7 ich habe ×7 mit der ×7
Top complaint themes
— no recurring complaint themes
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.59999★ | 5 | 4.59999★ this version |
| 🇧🇷 BR | 4.5★ | 2 | 4.5★ this version |
| 🇨🇦 CA | 3.66667★ | 3 | 3.66667★ this version |
| 🇩🇪 DE | 4.75781★ | 256 | 4.75781★ this version |
| 🇫🇷 FR | 4.53333★ | 15 | 4.53333★ this version |
| 🇬🇧 GB | 4.81818★ | 11 | 4.81818★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇺🇸 US | 4.42856★ | 21 | 4.42856★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
More by Florian Kriesche
View all →📦 Portfolio summaryINDIE studio
3apps·$8K/mocombined
⚠ Concentrated — top app contributes 94% of combined revenue (single-app dependency)
Similar apps in Productivity
About this analysis
Why low confidence: only 21 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Logbook is a small / niche iOS app in the productivity space with weak public traction — only 21 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Logbook make per month?▴
Our model estimates Logbook earns roughly $8.1K/mo, but with only 21 ratings the confidence interval is wide. No founder-verified MRR is available for this app, so this is a model output calibrated against comparable apps in the same category. See methodology for the formula.
What apps are like Logbook?▴
Browse the full Productivity 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 Logbook?▴
Logbook is published by Florian Kriesche 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 Logbook's BU Score?▴
Logbook has a BU Score of 56/100 (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.