OxyKnight vs Cognitive Assessments
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OxyKnight
This app works with compatible smart oximeter devices to monitor and record overnight pulse oximetry. It provides detailed sleep reports with SpO2 and PR trends, customizable alarms, and spot-checking capabilities for oxygen saturation and respiration rate.
- Overnight HRPO monitoring
- Sleep reports with SpO2/PR trends
- Customizable SpO2/PR alarms
- Spot Check SpO2, PR, Respiration Rate
- Bluetooth device connection
- Shareable sleep data
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The updated OxyKnight® App is now compatible with multiple CMI Health smart oximeters including the OxyKnight® Watch, the OxyKnight® Watch Lite, and the OxyKnight® Finger. The OxyKnight® Watch and Watch Lite are perfect for anyone who snores, who feels not fully rested after sleep, has sleep disorders or oxygen issues, or people who may need to be monitored during sleep. They are very comfortable to wear and operate continuously throughout the night. It’s made with a soft, flexible fingertip cup and adjustable wrist strap for simple use. Just 1 tap within the App to connect the Watch with the OxyKnight® App via Bluetooth. The OxyKnight® Finger is a clinical-grade smart fingertip oximeter designed for home use, sports, and aviation. Check your oxygen saturation anytime, anywhere, and sync results effortlessly with the OxyKnight® App. FEATURES (Need the compatible and designated OxyKnight® device for the specific functionality) - Monitors and records HRPO (High-Resolution Pulse Oximetry) overnight - Sleep report includes SpO2 and PR trend graph, and a series of statistics. Easy to share with family members or doctors. - Trend data for sleep quality, SpO2, and PR - Customizable SpO2 and PR alarms - Spot Check SpO2, PR, and Respiration Rate Disclaimer: Please always seek a doctor’s advice before making any medical decisions.
Cognitive Assessments
This clinical reference tool helps healthcare professionals administer, score, and record four validated cognitive screening instruments. It supports offline use and provides inline scoring and interpretation for assessments like SLUMS, RUDAS, AD8, and MoCA.
- Administer and score cognitive assessments
- Includes SLUMS, RUDAS, AD8, and MoCA
- Anonymous mode for patient privacy
- Persistent session history with score breakdown
- Inline scoring and interpretation
- Offline functionality for key assessments
- Timer support for timed subtasks
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Cognitive Assessments is a clinical reference tool designed for healthcare professionals to administer, score, and record four validated cognitive screening instruments at the point of care. ASSESSMENTS INCLUDED SLUMS — Saint Louis University Mental Status Exam A 30-point assessment sensitive to mild cognitive impairment and dementia. Covers orientation, memory, attention, executive function, and language. Scoring is adjusted for level of education. RUDAS — Rowland Universal Dementia Assessment Scale A 30-point instrument designed to minimize the effects of cultural learning and language diversity. Assesses memory registration and recall, body orientation, praxis, visuospatial ability, judgement, and language fluency. AD8 — AD8 Dementia Screening Interview An 8-item informant interview that detects early cognitive change across multiple dementing illnesses including Alzheimer disease, vascular dementia, Lewy body dementia, and frontotemporal dementia. Can be administered to an informant or the patient directly. MoCA — Montreal Cognitive Assessment Links directly to the official MoCA website (mocacognition.com) for access to the test and administration instructions in accordance with copyright requirements. KEY FEATURES • Anonymous mode — no patient identifiers are collected or stored • Persistent session history with per-question score breakdown • Scoring and interpretation displayed inline during assessment • Timer support for timed subtasks • Audio playback for story recall (SLUMS) • Offline — no internet connection required for SLUMS, RUDAS, or AD8 INTENDED USE This app is intended as a clinical aid for qualified healthcare professionals. It does not replace clinical judgement. A screening result alone is insufficient to diagnose a dementing disorder. PRIVACY No personal health information (PHI) is collected. All session data is stored locally on the device only.
Screenshots
Verdict
The clearest difference is rating: Cognitive Assessments at 5.0 against OxyKnight's 3.5. OxyKnight's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (8 vs 1). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Cognitive Assessments holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: OxyKnight has 8 ratings behind it against 1, so its average is the more settled of the two.
OxyKnight ships an update fortnightly, Cognitive Assessments every 3 months. The most recent releases landed on July 5, 2026 and September 22, 2026 respectively.
| Parameter | OxyKnight | Cognitive Assessments |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 48 MB | 28 MB |
| Age rating | 4+ | 17+ |
| Developer | CMI Health Inc. | Stephen Sethi |
Customer experience
OxyKnight
Cognitive Assessments
In-app purchases
OxyKnight
No in-app purchases
Cognitive Assessments
No in-app purchases
Questions
Is OxyKnight free?
Is Cognitive Assessments free?
Which has better reviews, OxyKnight or Cognitive Assessments?
Do OxyKnight or Cognitive Assessments have ads?
Which is updated more often, OxyKnight or Cognitive Assessments?
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