Kontaktlinsen Tracker Premium
54
Quality Score
Solid
Kontaktlinsen Tracker Premium
by DOUBLE U s.r.o.
Low confidence
✍️ Bumetric analysis
“
Kontaktlinsen Tracker Premium is an iOS app from DOUBLE U s.r.o. in the Education category, currently rated 4.7★ across 38 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 54: 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
$1.3K
per month
→
12-mo forecast
$1.2K – $4.3K
per month
→
24-mo forecast
$1.1K – $9.8K
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
11 snapshots on record
Rating
4.7
Reviews
38 reviews
Forecast Revenue / mo
$1.3K
Snapshots tracked
11
since Oct 2017
ONE-TIME · BUILD
💰 Estimated build cost
$120K
↳ What it cost to build · not monthly revenue
Likely range $90K – $160K
$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 |
| ⚙ 10.0y maintenance × ~1-person team | +$59K |
Total estimate
$120K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$25K
↳ What it would sell for · not monthly revenue
Marketplace range $20K – $35K · 19× MRR multiple
💸
~0.2× 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 |
| 📅 10.0y 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 | 12 MB |
| 🏷 Category context | Education |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Slowing
25%
Last shipped 2026-07-06 · 81 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
| 📅 81 days since last update | Healthy release cadence |
| 👥 Small user base (38 ratings) + 10.0y old | +10% (solo-project pattern) |
Verdict
Slowing
🔬
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 – $2.7K
12 months
$1.2K – $4.3K
24 months
$1.1K – $9.8K
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
Early-stage solo · 40/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
2.9
Product Quality
3.7
Revenue Strength
3.1
Monetization Maturity
1.0
Defensibility
4.5
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $539 - $3374/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.66★ across 38 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ 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 = $24K-$43K.
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 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| Mature app (9y old)METRIC | +$1,500 | |
| Multilingual (19 languages)METRIC | +$1,500 | |
| Pre-traction phase (38 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 · v2.10
• new Home Screen widget showing the status of your soonest-expiring accessory
• you can now add multiple accessories of the same type
• improvements and bug fixes
If there is a problem, please let us know via the app menu.
If you like the app, please leave a positive review.… Full release notes →
• you can now add multiple accessories of the same type
• improvements and bug fixes
If there is a problem, please let us know via the app menu.
If you like the app, please leave a positive review.… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Kontaktlinsen Tracker Premium
- Developer
- DOUBLE U s.r.o.
- Bundle ID
- com.doubleu.ContactLensesPro
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- CS, NL, EN, FR, DE, HI, IT, JA, KO, PL, PT, RU, ZH, SK, ES, SV, ZH, TR, UK
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
- $1.3K/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 growth38 ratings+3700% lifetimeShow 3-year history estimate ▾
Tracked (11 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 → $29.99 (+0%)
🚀Update Frequency · Releases per Quarter2 releases tracked
🚀Version Release Timeline2 releases tracked
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
Keep your eye health in check with Contact Lenses Tracker, the ultimate contact lens tracking app. Say goodbye to the risk of forgetting to replace your lenses on time and prioritize your eye health effortlessly.
Simply input your lenses and let the app take care of the rest. This comprehensive tracking solution ensures you receive timely notifications as your lenses approach expiration, persistently reminding you until they are replaced. Bid farewell to extended wear and embrace responsible lens usage.… View full description on the official store →
Simply input your lenses and let the app take care of the rest. This comprehensive tracking solution ensures you receive timely notifications as your lenses approach expiration, persistently reminding you until they are replaced. Bid farewell to extended wear and embrace responsible lens usage.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 12 MB🔞 4+📱 iOS 16.6+🔖 v2.10🔄 updated 2mo ago🌐 CS, NL, EN, FR, DE +14📂 Education💰 Paid🚀 Launched 2016 (9y old)
📅
What Worked™ · Development Pipeline
11 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 →
2026-08
📸
Refreshed store screenshots — 14 of 14 updated
2026-07
🔧
Shipped update — v2.9 → v2.10
2026-05
⭐
Rating ↑ 3.70 → 4.66 (improved 0.96★)
2026-05
💲
Went paid — introduced $29.99 price point
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↑ 3.00 → 3.70 (improved 0.70★)
2025-02
⭐
Rating ↓ 3.40 → 3.00 (dropped 0.40★)
2019-05
⭐
Rating ↓ 4.33 → 3.50 (dropped 0.83★)
2019-04
⭐
Rating ↑ 4.00 → 4.33 (improved 0.33★)
→ 30 days after: rating −0.83★ high confidence
2018-06
⭐
Rating ↓ 5.00 → 4.00 (dropped 1.00★)
2017-10
🚀
First tracked snapshot — initial data captured
📸
Store Page History
14 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPad screenshots
Slot 1
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 2
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 3
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 4
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 5
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 6
2 ver.
2 ver.
2026-05-14
2026-08-31
iPhone screenshots
Slot 1
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 2
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 3
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 4
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 5
2 ver.
2 ver.
2026-05-14
2026-08-31
Slot 6
2 ver.
2 ver.
2026-05-14
2026-08-31
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.66667★ | 3 | 4.66667★ this version |
| 🇧🇷 BR | 4★ | 1 | 4★ this version |
| 🇨🇦 CA | 5★ | 4 | 5★ this version |
| 🇩🇪 DE | 3.66667★ | 3 | 3.66667★ this version |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇬🇧 GB | 5★ | 7 | 5★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇺🇸 US | 4.65789★ | 38 | 4.65789★ this version |
🔔
Track this app’s revenue
FREEGet an email when revenue moves by your threshold. No spam, unsubscribe in one click.
📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 38 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 Kontaktlinsen Tracker Premium make per month?▴
Based on our ML-calibrated revenue forecast, Kontaktlinsen Tracker Premium earns approximately $1.3K/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 Kontaktlinsen Tracker Premium profitable?▴
With estimated build cost $120K and monthly revenue $1.3K, Kontaktlinsen Tracker Premium looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
What apps are like Kontaktlinsen Tracker Premium?▴
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 Kontaktlinsen Tracker Premium built with?▴
Our heuristic places Kontaktlinsen Tracker Premium 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 Kontaktlinsen Tracker Premium still actively maintained?▴
Maintenance status: Slowing (25% abandonment risk). Last shipped version was 2 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Kontaktlinsen Tracker Premium sell for?▴
Estimated acquisition value: $25K (marketplace range $20K – $35K). 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 Kontaktlinsen Tracker Premium last updated?▴
Kontaktlinsen Tracker Premium last shipped a new version on 2026-07-06 — 2 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Kontaktlinsen Tracker Premium?▴
Kontaktlinsen Tracker Premium is published by DOUBLE U s.r.o. 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 Kontaktlinsen Tracker Premium's BU Score?▴
Kontaktlinsen Tracker Premium has a BU Score of 54/100 (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.