30
BU Score
Emerging
OptoDrum
✍️ bumetric analysis
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OptoDrum is an iOS app from Linsay Associates, LLC in the Education category, currently rated 2.3★ across 18 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Our BU Score puts it at 30: 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.
📊 Performance Tracking LIVE
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Rating
—
Reviews
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Forecast Revenue / mo
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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 6 of 6 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 (2.3★)METRIC | −$1,500 | |
| Mature app (15y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (18 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.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 2 MB🔞 4+📱 iOS 10.0+🔖 v1.4🔄 updated 7y ago🌐 EN📂 Education💰 Free🚀 Launched 2010 (15y old)
📝 About this app
OptoDrum is an easy to use replacement for a bulky optokinetic drum or a fraying cloth tape to elicit optokinetic nystagmus for evaluation of neurological, otological, and opthalmological disorders. Simply place the iPhone with a moving pattern in front of a patient’s eye to elicit the response. The stripe pattern, width, and speed are easily adjustable.
• OptoDrum provides five patterns: black stripes, red stripes, mixed colors, symbols, and animals.
• Drag a finger up or down the screen to make the pattern move at the speed of your finger.
• Double tap the moving pattern to make it stop.
• Pinch or zoom the pattern with two fingers to narrow or widen the pattern.
• A left or right finger swipe switches a stopped pattern to the next one in rotation.
• OptoDrum provides five patterns: black stripes, red stripes, mixed colors, symbols, and animals.
• Drag a finger up or down the screen to make the pattern move at the speed of your finger.
• Double tap the moving pattern to make it stop.
• Pinch or zoom the pattern with two fingers to narrow or widen the pattern.
• A left or right finger swipe switches a stopped pattern to the next one in rotation.
🆕 What's New · v1.4
We added a new set of colored stripes.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- OptoDrum
- Developer
- Linsay Associates, LLC
- Bundle ID
- com.LinsayAssociates.OptoDrum
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- EN
Company
- Website
- linsay.com
- Tagline
- Not found
- Description
- Not found
- 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
- $1.9K/mo
- Top-grossing rank
- 🇯🇵#62 /96
- 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
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
⭐Recent App Store Reviews16 latest · avg 2.31★ · 25.0% 5★ · 56.2% 1★
5★4 (25%)
4★1 (6%)
3★0 (0%)
2★2 (12%)
1★9 (56%)
+0 ratings/week
Praise: amazing ×1 best ×1Complaints: refund ×2 worst ×1 hate ×1
Top positive
★★★★★ Turbo Drum
I too had the same problem with Turbo Drum as Camelottt but had she(?) contacted their help desk she would probably have found that her iPad IOS was out of date. Upgrading it to 5.1 was easier said than done and needed a final step of erasi…
★★★★★ Dystonia advocate
This app is amazing. It has become a vital tool in my home therapy program for the treatment of my Dystonia. It helps me untwisted and cures migraines faster than any medication. Applied neurology is amazing! A huge thank you for putting…
Top negative
★☆☆☆☆ No
This is a rip off. Double tapping does not stop the pattern, so you can not switch patterns or colors. Very unresponsive to all touch commands instructed, in general.…
★☆☆☆☆ Worthless
This app does not work as described. I want a refund please!…
📈Ratings growth18 ratings+1700% lifetimeShow 3-year history estimate ▾
Tracked (18 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution●Top 10●Top 30●Top 60
📊Category Rank Trajectory#62 now · best #55 · worst #68
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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.
More by Linsay Associates, LLC
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Full revenue analysis
Read the article-style breakdown for OptoDrum: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.