31
Quality Score
Emerging
Scratch案例教程
Low confidence
✍️ bumetric analysis
“
Scratch案例教程 is an iOS app from 剑 林 in the News category, currently rated 2.5★ across 21 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 31: Emerging (early traction worth watching). For a News app, that means early traction worth watching. 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
$500
per month
→
12-mo forecast
$437 – $1575
per month
→
24-mo forecast
$405 – $3644
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$110K
↳ What it cost to build · not monthly revenue
Likely range $80K – $150K
$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 |
| 📦Asset bundle (118 MB) | +$27K |
| ⚙News complexity ×1.20 | +$15K |
| ⚙2.4y maintenance × ~1-person team | +$14K |
Total estimate$110K
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
Medium confidence · 60%
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 | 118 MB |
| 🏷Category context | News |
| 📦Mid-large iOS bundle | → Likely native SwiftUI (post-2020 era) |
💀 Maintenance status
At risk
60%
Last shipped 2025-09-09 · 257 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
| 📅8 months since last update | Concerning gap |
| 👥Small user base (21 ratings) + 2.4y 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, low defensibility moat
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 · 21/100INDIE TIERFREE (NO MONETIZATION)limited signalGrowth Velocity
5.0
Founder Strength
3.7
Product Quality
0.5
Revenue Strength
2.7
Monetization Maturity
0.5
Defensibility
2.6
Market Position
2.0
Operational Safety
0.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 2.48★ across 21 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 257d ago — slow cadence.
- ⚠️ Risk: High — scam/fraud mentions detected, rating drift -0.84 ★ (recent 50 vs lifetime).
🎯 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 = $6K-$11K. 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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Below-average rating (2.5★)METRIC | −$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (21 ratings)METRIC | −$300 | |
| Growing app (2y old)METRIC | +$200 |
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 →💾 118 MB🔞 17+📱 iOS 12.0+🔖 v1.05🔄 updated 8mo ago🌐 EN📂 News💰 Paid🚀 Launched 2023 (2y old)
📝 About this app
这是一套相当于市面上价值几千上万元的少儿编程课程,此App和本教程是由林剑老师亲自开发录制的,林剑老师是一位资深软件设计师,泉州市“涌泉行动”人才，现担任福建省多所高校计算机,动漫专业教师.兼任泉州市多所小学、少年宫外聘教师。具有丰富的开发与教学经验。（This is a set of children's programming courses worth several thousand to tens of thousands of yuan on the market. This App and this tutorial were personally developed and recorded by Teacher Lin Jian. Teacher Lin Jian is a senior software designer and a talent of Quanzhou's "Yongquan Action". Currently, he serves as a teacher of computer and animation majors in many universities in Fujian Province.… View full description on the official store →
🆕 What's New · v1.05
将Scratch软件内置到App中,方便用户练习（点击首页的猫头按钮可以打开）
Build Scratch software into the app ，Convenient for users to practice
(click the cat head button on the homepage to open it)
Build Scratch software into the app ，Convenient for users to practice
(click the cat head button on the homepage to open it)
📅
What Worked™ · Development Pipeline
4 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 →
2026-03
⭐
Rating ↓ 1.35 → 1.00 (dropped 0.35★)
2024-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
2024-06
⭐
Rating ↑ 1.00 → 1.50 (improved 0.50★)
2024-05
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 47 reviews across 7 markets● 21% positive · ● 36% neutral · ● 43% negative · Rating drift: -0.84★ (declining — recent 50: 1.64★ vs lifetime: 2.48★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇦🇺 AU
+0.18
🇧🇷 BR
+0.03
🇫🇷 FR
+0.00
🇯🇵 JP
+0.00
🇺🇸 US
-0.04
🇬🇧 GB
-0.55
🇩🇪 DE
-0.76
Top praise themes
alles ×3 war ×3
Top complaint themes
don download ×7 chinese chinese ×5 download don ×3 one language ×3 man die ×3 scratch ×13 english ×12 ich ×12
Risk signals
Fraud / scam mentions: 4.3%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 2.71429★ | 7 | 2.71429★ this version |
| 🇧🇷 BR | 1.66667★ | 6 | 1.66667★ this version |
| 🇨🇦 CA | 2★ | 2 | 2★ this version |
| 🇩🇪 DE | 2.33333★ | 9 | 2.33333★ this version |
| 🇫🇷 FR | 2.16667★ | 6 | 2.16667★ this version |
| 🇬🇧 GB | 1.71429★ | 7 | 1.71429★ this version |
| 🇮🇳 IN | 2.46667★ | 15 | 2.46667★ this version |
| 🇯🇵 JP | 1.16667★ | 6 | 1.16667★ this version |
| 🇺🇸 US | 2.47619★ | 21 | 2.47619★ this version |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Scratch案例教程
- Developer
- 剑 林
- Bundle ID
- com.lj.study
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 17+
- Languages
- EN
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
- $459/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 Reviews22 latest · avg 1.5★ · 9.1% 5★ · 77.3% 1★
5★2 (9%)
4★0 (0%)
3★0 (0%)
2★3 (14%)
1★17 (77%)
+2 ratings/week
Complaints: scam ×1 worst ×1 terrible ×1
Top positive
★★★★★ COOL
I saw the comments and they were not nice so I download the game and it makes me learn how to do coding Awsome…
★★★★★ STOP BEING SO HARSH THIS IS FOR CHINA NOT YOU
Games nice…
Top negative
★☆☆☆☆ Sad
Had a whole chase scene but lost it because it doesn’t have a save feature…
★☆☆☆☆ Just want to let you know it does translate to English but for me it only has video tutorials
Erm…
📈Ratings growth21 ratings+2000% lifetimeShow 3-year history estimate ▾
Tracked (22 weeks) Pre-tracking estimate (28 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 21 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Scratch案例教程 is a small / niche iOS app in the news 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
7 answers · auto-generated from this app's public dataHow much does Scratch案例教程 make per month?▴
Our model estimates Scratch案例教程 earns roughly $459/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 Scratch案例教程?▴
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 Scratch案例教程 built with?▴
Our heuristic places Scratch案例教程 on the Native iOS (SwiftUI) stack (Medium confidence, 60%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is Scratch案例教程 still actively maintained?▴
Maintenance status: At risk (60% abandonment risk). Last shipped version was 8 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was Scratch案例教程 last updated?▴
Scratch案例教程 last shipped a new version on 2025-09-09 — 8 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Scratch案例教程?▴
Scratch案例教程 is published by 剑 林 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 Scratch案例教程's BU Score?▴
Scratch案例教程 has a BU Score of 31/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.