45
BU Score
Emerging
OKN Drum Pro
✍️ BU Analytics Review
“
OKN Drum Pro is an iOS app from My Call Bag LLC in the Education category, currently rated 4.0★ across 11 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 45 — Emerging (early traction worth watching). For a Education app, that means early traction worth watching.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
creator
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
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 | |
| Good rating (4.0★)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (11 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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Nov 24
Oct 25
Dec 25
Jan 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 12 MB🔞 4+📱 iOS 17.0+🔖 v3.6🔄 updated 6d ago🌐 EN📂 Education💰 Paid🚀 Launched 2023 (2y old)
📝 About this app
IN-APP PURCHASE REQUIRED FOR USE
· OKN Drum Pro provides an Optokinetic Nystagmus (OKN) Drum featuring multiple modes for optokinetic testing and exercises. Users can adjust the stripe width to their preference using the pinch-to-zoom functionality.
· The speed of the OKN stripes is easily adjustable, enabling quick increases or decreases as desired.
· Users have the option to select either black or red stripes to suit their visual requirements.
· Includes multiple pediatric targets, such as puppies, dinosaurs, and various animal targets.
· By tapping the stripes, users can enter full-screen mode for an immersive experience.
· A metronome is also available to assist with timing exercises, enhancing the overall utility of the app for therapeutic and testing purposes.
· Record eye movements with the front facing camera
· Upload images for a custom OKN drum
· Flick the OKN graphic to simulate rotating an OKN drum
· OKN Drum Pro provides an Optokinetic Nystagmus (OKN) Drum featuring multiple modes for optokinetic testing and exercises. Users can adjust the stripe width to their preference using the pinch-to-zoom functionality.
· The speed of the OKN stripes is easily adjustable, enabling quick increases or decreases as desired.
· Users have the option to select either black or red stripes to suit their visual requirements.
· Includes multiple pediatric targets, such as puppies, dinosaurs, and various animal targets.
· By tapping the stripes, users can enter full-screen mode for an immersive experience.
· A metronome is also available to assist with timing exercises, enhancing the overall utility of the app for therapeutic and testing purposes.
· Record eye movements with the front facing camera
· Upload images for a custom OKN drum
· Flick the OKN graphic to simulate rotating an OKN drum
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- OKN Drum Pro
- Developer
- My Call Bag LLC
- Bundle ID
- OKNDrum.OKN-Drum
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- EN
Company
- Website
- OKNDrum.com
- Tagline
- OKN Drum App
- Description
- Free OKN Drum app for iPhone and iPad. Optokinetic nystagmus testing with black and red stripes, adjustable speed, pediatric fixation targets, selfie camera recording, and built-in metronome.
- 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
- $746/mo
- Top-grossing rank
- Outside top 100 in US Education
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- mullman@mycallbag.com
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
📈Ratings growth11 ratings+267% lifetimeShow 3-year history estimate ▾
Tracked (7 weeks) Pre-tracking estimate (30 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.
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