OKN Strips vs Reflex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OKN Strips
This diagnostic and therapeutic app aids in evaluating neurological, otological, and ophthalmological disorders. It features moving strips to elicit nystagmus, a red desaturation test, and an Amsler grid for comprehensive eye examinations.
- Optokinetic Nystagmus (OKN) elicitation
- Red Desaturation test
- Amsler Grid for eye testing
- Adjustable strip speed, color, and width
- Reverse strip direction
- Toolbar hide/show functionality
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Top selling diagnostic and therapeutic app for iPad, iPhone and iPod Touch! OKN Strips can be used to elicit Optokinetic Nystagmus (OKN) for evaluation of neurological, otological or opthalmological disorders, includes a Red Desaturation mode and now has an Amsler grid for additional eye testing. OKN Strips: Tap the screen to cycle through speeds of the moving strips. Tap the strips icon in the bottom toolbar to toggle the color of the strips between Red and Black. Pinch or Zoom with two fingers to change the width of the strips. Swipe against the direction the strips are moving to reverse their direction. Tap the screen with two fingers to hide or show the bottom toolbar. On the right side of the bottom toolbar there's icons to open the Red Desaturation and Amsler Grid. Red Desaturation: Use the colored circle to perform a red desaturation test. Amsler Grid: Use the Amsler grid to perform eye tests. The buttons on the bottom toolbar change color combinations of the grid.
Reflex
This tool measures and tracks pupillary activity using an iPhone camera for quick, 5-second tests. It helps medical professionals monitor patient progress and identify deviations for clinical decision support.
- Pupillary readings via iPhone camera
- 5-second test duration
- Patient progress tracking
- Baseline feature for deviations
- Clinical decision support tool
- Rapid biomarker validation
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Measure and track autonomic pupillary activity by simply holding the iPhone up to your patient's eye for a quick 5-second test. Track patient progress using the baseline feature and frequently follow-up to determine deviations with Reflex, an accessible pupillary tool for clinical decision support. Here's what you can expect from Reflex: -Fast and reliable pupillary readings at the touch of a screen. -Track important changes and fluctuations from pupil readings over time. -Validate your clinical efforts with the state-of-the-art in rapid biomarkers. Reflex is only for medical professional use. Seek a physician's advice if you're experiencing ocular or neurological issues. Pricing & Terms: Reflex offers the following subscription option for unlimited use per period: * 1 month: $39.99 (USD) * 1 year: $399.99 (USD) This price applies to United States residents. Prices may vary in other countries respecting your local currency exchange rate. Your subscription will be charged to your iTunes account. At the end of the term, unless auto-renewables subscriptions are disabled, your subscription will automatically renew in your iTunes account. You will be charged for the regular price of your subscription within 24 hours prior to the end of the current term. You can turn off automatic renewal in your iTunes account settings at any time, but you must do so at least 24 hours before the end of the current term. Refunds will not be provided for the unused portion of any term. Reflex is a registered Class I 510(K) Exempt medical device. Privacy policy: https://reflexapp.io/privacy-policy/ Terms and conditions: https://reflexapp.io/terms-conditions
Screenshots
Verdict
The clearest difference is review sentiment: OKN Strips at 62% against Reflex's 0%. OKN Strips also leads on rating (4.6 vs 3.5) and in-app purchases (none vs 5). Reflex's advantage is price (Free vs $3.99) and update cadence (every 2 weeks vs every 3 months). On ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Reflex is free to download; OKN Strips costs $3.99 up front. Reflex sells 5 in-app purchases, starting at $1.99 per month. OKN Strips asks for nothing beyond the download.
OKN Strips holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: OKN Strips has 586 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 62% of OKN Strips's written reviews are positive against 0% of Reflex's.
OKN Strips ships an update every 3 months, Reflex every 2 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | OKN Strips | Reflex |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.6 (586 ratings) — better | 3.5 (23 ratings) |
| Positive reviews | 61.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 586 — better | 23 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Best chart rank | #64 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 7 MB | 22 MB |
| Age rating | 4+ | +17 |
| Developer | Thomas Alvarez | Brightlamp, Inc. |
Customer experience
OKN Strips
Reflex
Bugs and requests
OKN Strips
Reported bugs
3 issues- Red desaturation test color doesn't change
- Red-Black inversion doesn't work on grid test
- Cannot go back to menu from OKN strips without restarting app
Requested features
8 requests- Recording feature
- Adjustable speed and style
- Change direction of movement (left/right, up/down)
- Options for smooth pursuit, saccades, VOR
- Horizontal stripes option
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- More peer-reviewed studies
- Make technology better known
- Slower speed option
Reflex
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OKN Strips
No in-app purchases
Reflex
- Critical Care Monthly$1.991 Month
- Monthly Subscription1 Month trial$41.991 Month
- Monthly Subscription$41.991 Month
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- Yearly Subscription1 Month trial$419.991 Year
- Yearly Subscription$419.991 Year








