Lumy, Sonnentracker Fotografie
75
Quality Score
Strong
Lumy, Sonnentracker Fotografie
Medium confidence
✍️ bumetric analysis
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Lumy, Sonnentracker Fotografie is an iOS app from Raja V in the Photo & Video category, currently rated 4.8★ across 2,202 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 75: Strong (healthy traction). For a Photo & Video 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
$900K
per month
→
12-mo forecast
$953K – $1467K
per month
→
24-mo forecast
$1.1M – $2.1M
per month
BIG 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
$140K
↳ What it cost to build · not monthly revenue
Likely range $105K – $190K
$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 (253 MB) | +$40K |
| ⚙ Photo & Video complexity ×1.55 | +$49K |
Total estimate
$140K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$500K
↳ What it would sell for · not monthly revenue
Marketplace range $400K – $700K · 17× 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% |
Final multiple
17× MRR
👥 Estimated audience size
305K
Lifetime downloads (US-equivalent)
Monthly active
54K
Daily active
16K
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
| 📲 Photo & Video engagement | ~140 installs / rating |
| 🔁 Photo & Video D30 retention | 18% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
29% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$900K/mo · ML-estimated from 234 triggers
Growth rate
+2.5% MoM · BIG tier baseline (compound monthly)
6 months
$887K – $1.2M
12 months
$953K – $1.5M
24 months
$1.1M – $2.1M
Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon — typical noise band ±15% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Mixed signals · 59/100BIG TIERcompetitive but cautiousRevenue Strength
6.0
Product Quality
8.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
7.5
Operational Safety
10.0
Founder Strength
7.4
Monetization Maturity
1.0
- 💰 Revenue: Healthy — $360K - $1980K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.81★ across 2,202 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 = $16.2M-$28.8M.
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 10 of 10 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 (4.8★)METRIC | +$2,200 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (2,202 ratings)METRIC | +$1,500 | |
| Mature app (11y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Localized (5 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 · v2026.1.17
- New: Custom alert offsets. Pick any hour and minute before or after the sun events.
- Improved the UI/UX performance.
- Bug fixes.
Previously,
Lumy's OS 26 update is designed to feel lighter, smarter, and more in sync with daily life.
On iPhone and iPad… Full release notes →
- Improved the UI/UX performance.
- Bug fixes.
Previously,
Lumy's OS 26 update is designed to feel lighter, smarter, and more in sync with daily life.
On iPhone and iPad… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Lumy, Sonnentracker Fotografie
- Developer
- Raja V
- Bundle ID
- com.appatakkars.lumy
- App Store URL
- Open in App Store
- Category
- Photo & Video
- Content rating
- 4+
- Languages
- EN, FR, DE, JA, ZH
Company
- Website
- Not found
- Tagline
- Lumy for iOS, iPadOS, watchOS, and tvOS
- Description
- Lumy is a simple and beautiful app for photographers and everyone who wants to track the sun and moon.
- 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
- $30.3K/mo
- Top-grossing rank
- Outside top 100 in US Photo & Video
- 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 growth2,202 ratings+29% lifetimeShow 3-year history estimate ▾
Tracked (58 weeks) Pre-tracking estimate (34 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 → $6.99 (+0%)
🚀Version Release Timeline4 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
Lumy is a modern sun tracker + outdoor activity planner.
- Perfect lighting for photos or videos? Done.
- Sunrise hike or sunset walk? Easy.
- Outdoor yoga or sunlight breaks? Covered.
Whether you’re chasing golden hour* or keeping an eye on moon phases for a night under the stars, Lumy helps you make the most of natural light.
Now redesigned from the ground up - Lumy feels more personal, purposeful, and in sync with how we live.
Introducing Modes: Switch between profiles like Daily, Photography, or Meditation to shape Lumy around your routine. See only what matters to you.… View full description on the official store →
- Perfect lighting for photos or videos? Done.
- Sunrise hike or sunset walk? Easy.
- Outdoor yoga or sunlight breaks? Covered.
Whether you’re chasing golden hour* or keeping an eye on moon phases for a night under the stars, Lumy helps you make the most of natural light.
Now redesigned from the ground up - Lumy feels more personal, purposeful, and in sync with how we live.
Introducing Modes: Switch between profiles like Daily, Photography, or Meditation to shape Lumy around your routine. See only what matters to you.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 253 MB🔞 4+📱 iOS 18.0+🔖 v2026.1.17🔄 updated 0d ago🌐 EN, FR, DE, JA, ZH📂 Photo & Video💰 Paid
📅
What Worked™ · Development Pipeline
9 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
💲
Went paid — introduced $6.99 price point
2026-03
⭐
Rating ↑ 4.35 → 4.80 (improved 0.45★)
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
2021-10
📈
Crossed 100 ratings — social-proof flywheel kicking in
2020-10
📈
Crossed 50 ratings — social-proof flywheel kicking in
2016-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2015-03
⭐
Rating ↓ 4.75 → 4.00 (dropped 0.75★)
2014-09
⭐
Rating ↑ 4.00 → 4.50 (improved 0.50★)
2014-08
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 8 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇬🇧 GB | 4.75301★ | 332 | 4.75301★ this version |
| 🇩🇪 DE | 4.80868★ | 507 | 4.80868★ this version |
| 🇫🇷 FR | 4.76761★ | 142 | 4.76761★ this version |
| 🇯🇵 JP | 4.70439★ | 318 | 4.70439★ this version |
| 🇨🇦 CA | 4.78218★ | 202 | 4.78218★ this version |
| 🇦🇺 AU | 4.79629★ | 108 | 4.79629★ this version |
| 🇧🇷 BR | 4.29412★ | 51 | 4.29412★ this version |
| 🇮🇳 IN | 4.63636★ | 176 | 4.63636★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Lumy, Sonnentracker Fotografie: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Raja V
View all →📦 Portfolio summaryINDIE studio
6apps·$72K/mocombined
✓ Diversified — top app contributes 42%; risk spread across portfolio
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About this analysis
Why medium confidence: 2,202 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Lumy, Sonnentracker Fotografie make per month?▴
Based on our ML-calibrated revenue forecast, Lumy, Sonnentracker Fotografie earns approximately $30K/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 Lumy, Sonnentracker Fotografie?▴
Browse the full Photo & Video 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 Lumy, Sonnentracker Fotografie?▴
Lumy, Sonnentracker Fotografie is published by Raja V 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 Lumy, Sonnentracker Fotografie's BU Score?▴
Lumy, Sonnentracker Fotografie 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.