29
Quality Score
Niche
发现者-内窥镜
✍️ bumetric analysis
“
发现者-内窥镜 is an iOS app from 凌 张 in the Photo & Video category, currently rated 2.3★ across 12 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 29: Niche (micro-niche or pre-traction stage). For a Photo & Video app, that means micro-niche or pre-traction stage. 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.
💰 Revenue · today and ahead
Today
$500/mo
In 12 months
$437 – $1575
In 24 months
$405 – $3644
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$125K
↳ What it cost to build · not monthly revenue
Likely range $95K – $170K
$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 |
| ⚙Photo & Video complexity ×1.55 | +$27K |
| ⚙7.8y maintenance × ~1-person team | +$46K |
Total estimate$125K
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 70%
Also possible
Flutter
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 | 40 MB |
| 🏷Category context | Photo & Video |
| 📦Small-mid iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
At risk
60%
Last shipped 2025-06-18 · 339 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
| 📅11 months since last update | Concerning gap |
| 👥Small user base (12 ratings) + 7.8y old | +10% (solo-project pattern) |
VerdictAt risk
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
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 · 33/100INDIE TIERlimited signalRevenue Strength
2.7
Product Quality
1.9
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.0
Operational Safety
7.0
Founder Strength
2.9
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 2.33★ across 12 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 339d ago — slow cadence.
- ⚠️ Risk: Moderate — 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 = $9K-$16K.
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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Below-average rating (2.3★)METRIC | −$1,500 | |
| Multilingual (12 languages)METRIC | +$1,500 | |
| Established app (7y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Pre-traction phase (12 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 →💾 40 MB🔞 4+📱 iOS 10+🔖 v1.0.24🔄 updated 11mo ago🌐 EN, FR, DE, IT, JA +7📂 Photo & Video💰 Paid🚀 Launched 2018 (7y old)
📝 About this app
Easy to connect phone for check.
Taking pic and save in system
Taking video and save in system
Browse save pic and video
Support AirDrop, QQ, wechat to share the pic and video
Support app generated test report , easy for share in real time
With temperature sense technology, especilly for Auto inspection, Escort your inspection
Taking pic and save in system
Taking video and save in system
Browse save pic and video
Support AirDrop, QQ, wechat to share the pic and video
Support app generated test report , easy for share in real time
With temperature sense technology, especilly for Auto inspection, Escort your inspection
🆕 What's New · v1.0.24
1. Application optimization and update.
📅
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 →
2026-02
⭐
Rating ↓ 4.50 → 3.67 (dropped 0.83★)
2024-11
⭐
Rating ↑ 4.00 → 4.50 (improved 0.50★)
2024-01
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 2.33333★ | 12 | 2.33333★ this version |
| 🇬🇧 GB | 0★ | 0 | — |
| 🇩🇪 DE | 1★ | 6 | 1★ this version |
| 🇫🇷 FR | 1★ | 1 | 1★ this version |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 0★ | 0 | — |
| 🇦🇺 AU | 1★ | 1 | 1★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- 发现者-内窥镜
- Developer
- 凌 张
- Bundle ID
- com.Ral.GPUSBCamera
- App Store URL
- Open in App Store
- Category
- Photo & Video
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, JA, KK, KO, PL, RU, ZH, ES, ZH
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
- $86/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.
⭐Recent App Store Reviews2 latest · avg 4.5★ · 50.0% 5★ · 0% 1★
5★1 (50%)
4★1 (50%)
3★0 (0%)
2★0 (0%)
1★0 (0%)
+0 ratings/week
Praise: great ×1
Top positive
★★★★★ Great borescope for the money
I have the F4-A series which uses this app. Ralcam borescope is the brand. Easy to use and captures very good images. For my uses, I can’t complain.…
★★★★☆ Works
Works good enuf to use the borescope. Takes good quality video and pictures.…
📈Ratings growth12 ratings+50% lifetimeShow 3-year history estimate ▾
Tracked (4 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.
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does 发现者-内窥镜 make per month?▾
Our model estimates 发现者-内窥镜 earns roughly $86/mo, but with only 12 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 发现者-内窥镜?▾
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.
What is 发现者-内窥镜 built with?▾
Our heuristic places 发现者-内窥镜 on the Native iOS (Swift / UIKit) stack (Medium confidence, 70%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is 发现者-内窥镜 still actively maintained?▾
Maintenance status: At risk (60% abandonment risk). Last shipped version was 11 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was 发现者-内窥镜 last updated?▾
发现者-内窥镜 last shipped a new version on 2025-06-18 — 11 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes 发现者-内窥镜?▾
发现者-内窥镜 is published by 凌 张 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 发现者-内窥镜's BU Score?▾
发现者-内窥镜 has a BU Score of 29/100 (Niche). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.