65
Quality Score
Solid
Observer Pro
Low confidence
✍️ bumetric analysis
“
Observer Pro is an iOS app from Joshua Bury in the News category, currently rated 4.6★ across 49 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 65: Solid (established niche player). For a News 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
$1.4K
per month
→
12-mo forecast
$1.2K – $4.4K
per month
→
24-mo forecast
$1.1K – $10.2K
per month
INDIE 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
$195K
↳ What it cost to build · not monthly revenue
Likely range $145K – $265K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Pays back in ~1.3y 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 (241 MB) | +$40K |
| ⚙News complexity ×1.20 | +$18K |
| ⚙14.7y maintenance × ~1-person team | +$88K |
Total estimate$195K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$200K
↳ What it would sell for · not monthly revenue
Marketplace range $150K – $275K · 17× MRR multiple
💸~1.0× build cost (break-even+)
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 |
| 📅14.7y proven track record | +20% |
| ⭐★ rating ≥ 4.4 (solid) | +8% |
| 🏷News category multiple | -5% |
| ⭐Small user base (<1K ratings) | -8% |
Final multiple17× MRR
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 55%
Also possible
React NativeFlutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 📦App bundle size | 241 MB |
| 🏷Category context | News |
| 📦Large iOS bundle | → Native Swift / UIKit (pre-2020 era) + assets |
💀 Maintenance status
Likely abandoned
87%
Last shipped 2025-03-25 · 425 days ago
0 · Active50 · At risk100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅1y 2mo since last update | Likely deprioritized |
| 👥Small user base (49 ratings) + 14.7y old | +10% (solo-project pattern) |
| •15y old + 1y+ no update | +5% (API deprecation drift) |
VerdictLikely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.4K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition, review-mined risks present
6 months
$1.2K – $2.8K
12 months
$1.2K – $4.4K
24 months
$1.1K – $10.2K
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
Pre-traction · 31/100INDIE TIERFREE (NO MONETIZATION)limited signalRevenue Strength
3.1
Product Quality
3.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
0.5
Founder Strength
5.1
Monetization Maturity
0.5
- 💰 Revenue: Modest — $559 - $3496/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.63★ across 49 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 425d ago — possibly dormant.
- ⚠️ Risk: High — bug mentions above category norm, dormant (425d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 12-22× monthly = $16K-$30K. Portfolio play ($12K/mo combined) commands premium. Discount applied for operational risk..
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 8 of 8 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 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (14y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (49 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.
App Specs
🔐 Own this app? Claim & verify MRR →💾 241 MB🔞 4+📱 iOS 16.4+🔖 v1.4.1🔄 updated 1y ago🌐 EN📂 News💰 Paid🚀 Launched 2011 (14y old)
📝 About this app
Observer Pro is an indispensable app for advanced astronomy observing and astrophotography planning. No more guessing when that galaxy emerges from behind that tree. No more estimating how many hours you'll be able to image an object. Observer Pro gives every astronomer the info they need to make the most of their observing right at their fingertips!
What astronomers are saying:
"Every astronomer with an iPhone should own this app!"
- Astronomy Technology Today magazine
"Observer Pro is the most impressive astronomy app that I have tried out. I enthusiastically commend it to you!"… View full description on the official store →
What astronomers are saying:
"Every astronomer with an iPhone should own this app!"
- Astronomy Technology Today magazine
"Observer Pro is the most impressive astronomy app that I have tried out. I enthusiastically commend it to you!"… View full description on the official store →
🆕 What's New · v1.4.1
• Basic support for importing and exporting lists of objects
• Fixed unable to change the sort mode of object type lists
• Fixed Observing List changes not always saved
• Other minor enhancements and fixes
• Fixed unable to change the sort mode of object type lists
• Fixed Observing List changes not always saved
• Other minor enhancements and fixes
📅
What Worked™ · Development Pipeline
3 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 →
2016-01
📈
Crossed 50 ratings — social-proof flywheel kicking in
2012-06
📈
Crossed 10 ratings — social-proof flywheel kicking in
2011-09
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 114 reviews across 5 markets● 77% positive · ● 11% neutral · ● 11% negative · Rating drift: +0.03★ (stable — recent 50: 4.66★ vs lifetime: 4.63★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇦🇺 AU
+0.78
🇺🇸 US
+0.64
🇨🇦 CA
+0.54
🇫🇷 FR
+0.34
🇩🇪 DE
-0.11
Top praise themes
local horizon ×8 deep sky ×5 night sky ×4 observing sessions ×3 planning night ×3 given night ×3 plan observing ×3 find objects ×3
Top complaint themes
iphone ios8 ×3 crashes ×10 open ×7 ios ×6 crash ×5 list ×4 load ×3 working ×3
Risk signals
Refund mentions: 0.9% Bug mentions: 14%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4.63265★ | 49 | 4.63265★ this version |
| 🇬🇧 GB | 4.42856★ | 7 | 4.42856★ this version |
| 🇩🇪 DE | 4.59999★ | 5 | 4.59999★ this version |
| 🇫🇷 FR | 5★ | 6 | 5★ this version |
| 🇯🇵 JP | 2★ | 2 | 2★ this version |
| 🇨🇦 CA | 4.8★ | 5 | 4.8★ this version |
| 🇦🇺 AU | 4.25★ | 4 | 4.25★ this version |
| 🇧🇷 BR | 5★ | 1 | 5★ this version |
| 🇮🇳 IN | 5★ | 1 | 5★ this version |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Observer Pro
- Developer
- Joshua Bury
- Bundle ID
- com.joshuabury.observerpro
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- EN
Company
- Website
- observer.pro
- Tagline
- observer.pro
- Description
- Not found
- 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
- $12.3K/mo
- Top-grossing rank
- Outside top 100 in US News
- 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.
⭐Recent App Store Reviews49 latest · avg 3.94★ · 63.3% 5★ · 18.4% 1★
5★31 (63%)
4★4 (8%)
3★3 (6%)
2★2 (4%)
1★9 (18%)
+0 ratings/week
Praise: great ×13 best ×10 love ×9 amazing ×5 perfect ×4Complaints: crash ×9 bug ×3 refund ×1 broken ×1
Top positive
★★★★★ Great App
Thank you so much for fixing the sort functions.. This is absolutely my favorite planning app.…
★★★★★ Excellent app to plan DSOs
I have a limited view from my yard so this is incredibly helpful for planning out which objects are visible and the timing. I’ve tried a bunch of apps and methods and this is by far the best solution. Very, very well done.
My only tiny re…
Top negative
★☆☆☆☆ Crashing app
Updated to the recent release, but the app crashes every time I select any of the groupings (Galaxy, Planetary Nebulae, Galactic Nebulae, etc.) in the catalogs part of the program.…
★☆☆☆☆ Crashes every time I open it
Worthless. Have yet to get it to open.…
📈Ratings growth49 ratings+81% lifetimeShow 3-year history estimate ▾
Tracked (55 weeks) Pre-tracking estimate (36 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 analysis
Why low confidence: only 49 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
9 answers · auto-generated from this app's public dataHow much does Observer Pro make per month?▴
Based on our ML-calibrated revenue forecast, Observer Pro earns approximately $12K/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.
Is Observer Pro profitable?▴
With estimated build cost $195K and monthly revenue $12K, Observer Pro looks break-even-grade — payback period sits around 1.3 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
What apps are like Observer Pro?▴
Browse the full News 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.
What is Observer Pro built with?▴
Our heuristic places Observer Pro on the Native iOS (Swift / UIKit) stack (Medium confidence, 55%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is Observer Pro still actively maintained?▴
Maintenance status: Likely abandoned (87% abandonment risk). Last shipped version was 1+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Observer Pro sell for?▴
Estimated acquisition value: $200K (marketplace range $150K – $275K). Calculated as 17× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was Observer Pro last updated?▴
Observer Pro last shipped a new version on 2025-03-25 — more than 1 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Observer Pro?▴
Observer Pro is published by Joshua Bury 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 Observer Pro's BU Score?▴
Observer Pro has a BU Score of 65/100 (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.