Pupil Distance PD Express
60
Quality Score
Solid
✍️ Bumetric analysis
“
Pupil Distance PD Express is an iOS app from Tech Positive in the Education category, currently rated 4.5★ across 99 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 60: Solid (established niche player). For a Education 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID 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
16 snapshots on record
Rating
4.5
Reviews
99 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
16
since Dec 2018
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
📈
Pays back in ~1.8y 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 |
| ⚙ Education complexity ×1.20 | +$10K |
| ⚙ 8.0y maintenance × ~1-person team | +$48K |
Total estimate
$110K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$100K
↳ What it would sell for · not monthly revenue
Marketplace range $75K – $125K · 19× MRR multiple
💸
~0.9× build cost (under-water)
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 |
| 📅 8.0y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
19× MRR
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
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 | 1 MB |
| 🏷 Category context | Education |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
At risk
60%
Last shipped 2026-05-07 · 186 days ago
0 · Active
50 · At risk
100 · 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
| 📅 6 months since last update | Concerning gap |
| 👥 Small user base (99 ratings) + 8.0y old | +10% (solo-project pattern) |
Verdict
At risk
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 45/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
6.1
Product Quality
3.6
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
5.5
Market Position
2.0
Operational Safety
9.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.48★ across 99 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 182d ago — slow cadence.
- ⚠️ 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 = $90K-$160K. Portfolio play ($25K/mo combined) commands premium.
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 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($4.99)METRIC | +$2,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (8y old)METRIC | +$1,500 | |
| Good rating (4.5★)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (99 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 · v1.1.2
- Minor bug fixes.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Pupil Distance PD Express
- Developer
- Tech Positive
- Bundle ID
- co.TechPositive.PD-Express
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- 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
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/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.
📈Ratings growth98 ratings+9700% lifetimeShow 3-year history estimate ▾
Tracked (16 weeks) Pre-tracking estimate (0 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
● No cards needed ● No steps involved ● Highly accurate
Just open the app and get your PD in under 1 second.
PD, Pupil Distance or Pupillary Distance, is the distance between the center of your pupils in millimeters. This measurement is required for making prescription eyeglasses and prescription Virtual Reality (VR) Headsets.
The app will automatically detect your pupils and provide you with your distance and reading PDs.
This app requires a device with a TrueDepth front-facing camera. It is only available for:
● iPhone X, XS, XR, XS Max, and later models… View full description on the official store →
Just open the app and get your PD in under 1 second.
PD, Pupil Distance or Pupillary Distance, is the distance between the center of your pupils in millimeters. This measurement is required for making prescription eyeglasses and prescription Virtual Reality (VR) Headsets.
The app will automatically detect your pupils and provide you with your distance and reading PDs.
This app requires a device with a TrueDepth front-facing camera. It is only available for:
● iPhone X, XS, XR, XS Max, and later models… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 970 KB🔞 4+📱 iOS 18.0+🔖 v1.1.2🔄 updated 6mo ago🌐 EN📂 Education💰 Paid🚀 Launched 2018 (8y old)
📅
What Worked™ · Development Pipeline
10 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 $4.99 price point
2026-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↑ 2.58 → 4.30 (improved 1.72★)
2022-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
2020-04
⭐
Rating ↓ 3.00 → 2.50 (dropped 0.50★)
2019-08
⭐
Rating ↓ 3.75 → 3.20 (dropped 0.55★)
→ 30 days after: revenue +$74/mo · rating −0.20★ high confidence
2019-08
⭐
Rating ↑ 3.33 → 3.75 (improved 0.42★)
→ 30 days after: revenue +$235/mo · rating −0.33★ medium · co-occurring
2019-01
⭐
Rating ↓ 4.50 → 3.33 (dropped 1.17★)
2019-01
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
→ 30 days after: revenue +$155/mo · rating −1.67★ medium · co-occurring
2018-12
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$155/mo · rating −1.67★ medium · co-occurring
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 4.83333★ | 6 | 4.83333★ this version |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇬🇧 GB | 4.33333★ | 9 | 4.33333★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 5★ | 1 | 5★ this version |
| 🇺🇸 US | 4.47959★ | 98 | 4.47959★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
More by Tech Positive
View all →📦 Portfolio summaryMID studio
3apps·$905K/mocombined
⚠ Concentrated — top app contributes 99% of combined revenue (single-app dependency)
About this analysis
Why low confidence: only 99 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 Pupil Distance PD Express make per month?▴
Based on our ML-calibrated revenue forecast, Pupil Distance PD Express earns approximately $5.0K/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 Pupil Distance PD Express profitable?▴
With estimated build cost $110K and monthly revenue $5.0K, Pupil Distance PD Express looks break-even-grade — payback period sits around 1.8 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
What apps are like Pupil Distance PD Express?▴
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.
What is Pupil Distance PD Express built with?▴
Our heuristic places Pupil Distance PD Express on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is Pupil Distance PD Express still actively maintained?▴
Maintenance status: At risk (60% abandonment risk). Last shipped version was 6 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Pupil Distance PD Express sell for?▴
Estimated acquisition value: $100K (marketplace range $75K – $125K). Calculated as 19× 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 Pupil Distance PD Express last updated?▴
Pupil Distance PD Express last shipped a new version on 2026-05-07 — 6 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Pupil Distance PD Express?▴
Pupil Distance PD Express is published by Tech Positive 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 Pupil Distance PD Express's BU Score?▴
Pupil Distance PD Express has a BU Score of 60/100 (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.