Comparison

Roche PD Research vs OptoReflex

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Roche PD Research

Features
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This application is intended for individuals both with and without Parkinson's Disease, and can measure aspects of physical and mental functioning. It can be only used in clinical studies, whereby we may gain a better understanding of the Parkinson's Disease symptom severity and progression. The information collected by this application may lead to the development of tools and insights that can help better diagnose, treat and even prevent brain disease.

About

OptoReflex

Features
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IMPORTANT โ€” PLEASE READ OptoReflex is a set of visual stimuli and observation tools for teaching and for supporting the examiner's own observation. It is not a medical device, it does not diagnose, and it must not be used to make medical decisions. Always consult a physician and use validated equipment for medical assessment. OptoReflex turns your iPhone or iPad into a pocket kit of classic neuro-ophthalmology stimuli for clinicians, students and educators. WHAT'S INCLUDED โ€ข Optokinetic drum (OKN) Full-screen moving stripes act as a digital optokinetic drum. Choose colors, speed, stripe width, pattern and direction, with a live preview. Speed can be shown in degrees per second for the viewing distance you set. โ€ข Smooth pursuit and saccade targets A target that glides (pursuit) or jumps between points (saccades) along horizontal, vertical or circular paths. Adjustable speed, amplitude, size and color. โ€ข Nine gaze positions A target that steps through the nine positions of gaze while you observe the eyes. โ€ข Pupillary light reflex โ€” observation The rear camera works as a magnifier with macro focus, and the flashlight delivers timed stimulus sequences (direct, consensual, alternating light, light/dark) with countdown and voice cues. For teaching, an approximate pupil diameter is shown together with the outline the app detected. It is an estimate based on an assumed iris diameter, not a clinical measurement. โ€ข Pupil gauge Circles from 1 to 9 mm at actual size on the screen, like the gauge printed on clinical penlights, for visual comparison by the examiner. Size can be calibrated with a standard bank card. โ€ข Amsler grid A standard grid with a central fixation dot, normal and inverted modes, drawing of the areas the person describes, and side-by-side comparison by eye. RECORDING AND PRIVACY Sessions can be recorded with the device camera. Videos stay in a private area on your device, with optional name or ID and date, and can be protected with Face ID. Nothing is uploaded. LANGUAGES English, Spanish, Portuguese, French, German, Italian, Chinese, Japanese, Arabic and Russian, with an in-app selector.

Screenshots

Roche PD Research4 screens
OptoReflex4 screens

Verdict

The call

The clearest difference is price: Roche PD Research at Free against OptoReflex's $0.99. Roche PD Research also leads on iOS requirement (15.2 vs 17.0). OptoReflex's advantage is update cadence (weekly vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Roche PD Research is free to download; OptoReflex costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Roche PD Research ships an update every 2 months, OptoReflex weekly. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

Scorecard3 real differences ยท 3 level
Roche PD Research versus OptoReflex: the parameters behind the verdict, then further details
ParameterRoche PD ResearchOptoReflex
PriceFree โ€” better$0.99
Update frequencyEvery 2 monthsWeekly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.2 โ€” better17.0
Further details โ€” not scored
Size25 MB3 MB
Age rating4+4+
DeveloperF. Hoffmann-La RocheIsaias Fiuza Cabral

In-app purchases

None

Roche PD Research

No in-app purchases

None

OptoReflex

No in-app purchases

Questions

Is Roche PD Research free?
Roche PD Research is free to download, with no in-app purchases.
Is OptoReflex free?
OptoReflex costs $0.99, with no in-app purchases.
Do Roche PD Research or OptoReflex have ads?
Neither Roche PD Research nor OptoReflex shows ads.
Which is updated more often, Roche PD Research or OptoReflex?
Roche PD Research ships an update every 2 months, and OptoReflex weekly. Most recently, Roche PD Research was updated on October 3, 2026 and OptoReflex on October 18, 2026.

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