Sehtafeln
42
Quality Score
Emerging
Sehtafeln
Low confidence
✍️ bumetric analysis
“
Sehtafeln is an iOS app from zijian huang in the Education category, currently rated 3.5★ across 29 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 42: Emerging (early traction worth watching). For a Education 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
$1.3K
per month
→
12-mo forecast
$1.1K – $4.1K
per month
→
24-mo forecast
$1.0K – $9.4K
per month
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
$60K
↳ What it cost to build · not monthly revenue
Likely range $45K – $80K
$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 |
| ⚙ Education complexity ×1.20 | +$10K |
Total estimate
$60K
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.3K/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
$1.1K – $2.6K
12 months
$1.1K – $4.1K
24 months
$1.0K – $9.4K
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 · 36/100INDIE TIERlimited signalGrowth Velocity
5.0
Founder Strength
3.2
Product Quality
2.8
Revenue Strength
3.1
Monetization Maturity
1.0
Defensibility
3.9
Market Position
2.0
Operational Safety
8.0
- 💰 Revenue: Modest — $514 - $3214/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.48★ across 29 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ 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 = $23K-$41K.
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:
| Paid app ($0.00)METRIC | +$2,800 | |
| Below-average rating (3.5★)METRIC | −$1,500 | |
| Multilingual (19 languages)METRIC | +$1,500 | |
| Established app (7y old)METRIC | +$800 | |
| Pre-traction phase (29 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 · v3.5.1
1. Support iPhone 17e, iPad Air (11-inch), iPad Pro (13-inch).
2. Target iOS 26.2.
2. Target iOS 26.2.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Sehtafeln
- Developer
- zijian huang
- Bundle ID
- com.fonlow.va
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 12+
- Languages
- AR, FR, DE, HE, HI, ID, IT, JA, KO, MS, PL, PT, RU, ZH, ES, TH, ZH, TR, VI
Company
- Website
- Not found
- Tagline
- Fonlow Eye Charts
- Description
- Measure distance visual acuity to detect early signs of myopia in children over 6, parents with young children, and general practitioners.
- 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
- $144/mo
- Top-grossing rank
- Outside top 100 in US Education
- 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 Reviews14 latest · avg 3.21★ · 50.0% 5★ · 35.7% 1★
5★7 (50%)
4★0 (0%)
3★1 (7%)
2★1 (7%)
1★5 (36%)
+0 ratings/week
Praise: great ×4
Top positive
★★★★★ Solid app
My only suggestion is maybe have the letters appear in a row going down. Top can be 20/200 and the bottom is 20/20. Would make great for bedside screening…
★★★★★ Well written app
The mirror mode is handy and interesting.…
Top negative
★☆☆☆☆ Paid $5 for there to be no shapes!!
My toddler doesn’t know his letters yet but he does know his shapes. I thought it had shapes but it turns out I paid for nothing.…
★☆☆☆☆ This was free - now it’s not.
Update #2: Why are you reporting my concern to Apple support? My issue is NOT about MY purchase experience. My issue is about the many other patients who will need this app in the near future. Give THEM a break. Reduce the price for THEM. H…
📈Ratings growth29 ratings+1350% lifetimeShow 3-year history estimate ▾
Tracked (16 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.
💰Pricing History$0.00 → $4.99 (+0%)
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
Eye Charts is a professionally designed visual acuity testing app that makes it easy to accurately check, record, and track vision over time in children aged 6 and above, whether you are a parent monitoring a child’s eyesight at home or a healthcare professional performing routine screening in practice. Early detection of myopia allows you to take preventive action, seek medical advice promptly, and prevent pseudomyopia from worsening into myopia or stop nearsightedness from deteriorating further.
DESIGNED TO REDUCE VARIABILITY… View full description on the official store →
DESIGNED TO REDUCE VARIABILITY… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 21 MB🔞 12+📱 iOS 14.0+🔖 v3.5.1🔄 updated 0d ago🌐 AR, FR, DE, HE, HI +14📂 Education💰 Paid
📅
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 ↑ 3.27 → 5.00 (improved 1.73★)
2020-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2020-03
⭐
Rating ↓ 5.00 → 4.33 (dropped 0.67★)
2019-01
🚀
First tracked snapshot — initial data captured
🧪
Tech & Domain Intel — visualacuity.info
- Tech stack
- Google Workspace
Derived from public RDAP + DNS TXT records (no scraping, no login).
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 5★ | 8 | 5★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 0★ | 0 | — |
| 🇩🇪 DE | 5★ | 4 | 5★ this version |
| 🇫🇷 FR | 5★ | 1 | 5★ this version |
| 🇬🇧 GB | 5★ | 5 | 5★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 5★ | 2 | 5★ this version |
| 🇺🇸 US | 3.48276★ | 29 | 3.48276★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 29 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Sehtafeln is a small / niche iOS app in the education space with weak public traction — only 29 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 Sehtafeln make per month?▴
Our model estimates Sehtafeln earns roughly $143/mo, but with only 29 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 Sehtafeln?▴
Browse the full Education 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 Sehtafeln?▴
Sehtafeln is published by zijian huang 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 Sehtafeln's BU Score?▴
Sehtafeln has a BU Score of 42/100 (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.