Prevent vs Asira Core
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prevent
This app pairs with a special mouthguard to monitor head impacts in real-time. It provides detailed data on acceleration, direction, and load for each impact, helping teams and parents assess player safety and identify athletes needing evaluation.
- Real-time head impact data
- Linear and rotational acceleration tracking
- Impact direction and location analysis
- Impact Load measurement
- Player and team data views
- Live alerts for high-magnitude impacts
Read full descriptionHide full description
The Prevent mobile app pairs with the Prevent Biometrics impact monitor mouthguard. The Prevent system provides near real-time, accurate head impact data to help teams make the right call about player safety. The Prevent app is designed for sideline monitoring of head impacts for the whole team, and is typically used by athletic trainers, coaches and athlete parents. For every head impact, see five key impact characteristics: * Linear acceleration of the head * Rotational acceleration of the head * Direction of the impact * Location on the head of the impact * Impact Load (a composite measure factoring impact count and magnitude) View head impact data on a player or team basis, and over the timeframe of a day, week or sports season. Introduce actionable, objective data into the process of identifying athletes needing sideline evaluation. The Prevent app provides live alerts of high magnitude head impacts. See athletes with high head impact exposure and instruct them on safer playing technique. Stand for smart play. The Prevent system helps you understand head impacts across the team and organization and be a leader in improving sports safety, performance and growing the game. This app requires at least one Prevent Impact Monitor Mouthguard to operate. Learn more at preventbiometrics.com or contact sales@preventbiometrics.com.
Asira Core
This app tracks your calories, sleep, and recovery using your Apple Health data. It provides daily scores for flow, sleep, intensity, and stress, and offers personalized coaching to help you understand and improve your health.
- Daily health scores (Flow, Sleep, Intensity, Stress)
- AI-powered meal logging with photo/barcode scan
- Personalized calorie and macro targets
- AI coaching from 'Ari' for recovery insights
- Morning vitals tracking (HR, HRV, temperature)
- Weight and water logging
- Long-term trend analysis
Read full descriptionHide full description
Most food trackers hand you a number whether or not they actually have one. Asira Core tells you when it doesn't know. It's a calorie tracker and a health tracker at the same time. It reads your Apple Health data and what you ate, puts both on one page, and tells you what to do about today. Four Daily Scores Flow, Sleep, Intensity and Stress, built from your Apple Health data. Tap any of them and you'll see the readings underneath, so you can tell why the number moved. Log a Meal in Seconds Snap a photo, scan a barcode, or just describe it. Calories and macros get checked against USDA FoodData Central and Open Food Facts, and every food gets a Nutrition Score. Nothing lands in your log until you've looked it over. Targets Built Around You Calories and macros set from your body, your goal and the pace you picked. Change any of it and the plan recalculates. Coaching from Ari Ari reads your day and gets specific: which night cost you REM, what yesterday's hard session is still charging you, whether an hour earlier tonight would win most of it back. Your Morning Vitals Resting heart rate, HRV, respiratory rate and wrist temperature, each measured against your own baseline. The arrow shows which way you moved, and the color tells you whether that's worth your attention. Weight and Water Log your weight and watch the gap to your goal close. Water is one tap. Trends Over Time Sixteen metrics charted across weeks and months, so one odd day doesn't read as a trend. Reminders You Control Pick how often, or switch them off entirely. Synced to Your Account Your log follows you, not the phone you logged it on. Before You Start You'll need an account, because your data syncs across your devices. The four daily scores come from Apple Health, so if you're new to it, or you don't wear a watch to bed, those screens will say they're still calibrating rather than invent a score. Food, water and weight work on their own. Photos and meal descriptions are sent to Asira's own server to be identified by AI. Nothing else goes with them: not your name, your account, or your Apple Health data. They're never sold and never used to train AI models. The app asks before the first one, and you can say no and still use everything else. Barcode lookups use Open Food Facts. Asira Core is not a medical device. It does not diagnose, treat, cure, or prevent any condition, and it is not a substitute for advice from a clinician. Asira+ is an auto-renewing subscription ($9.99/month or $99.99/year) and begins with a 3-day free trial. Payment is charged to your Apple Account when the trial ends; the subscription renews unless cancelled at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://asiracore.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Prevent at none against Asira Core's 2. Prevent also leads on iOS requirement (16.4 vs 26.2). Asira Core's advantage is update cadence (every 8 days vs monthly). On price, rating, review sentiment and ratings volume 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. Asira Core sells 2 in-app purchases, starting at $9.99 per month. Prevent asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Prevent against 5.0 for Asira Core. Both are backed by a comparable volume of ratings — 9 and 14 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Prevent ships an update monthly, Asira Core every 8 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.
| Parameter | Prevent | Asira Core |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) | 5.0 (14 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 9 | 14 — better |
| Update frequency | Monthly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 26.2 |
| Further details — not scored | ||
| Size | 46 MB | 58 MB |
| Age rating | 4+ | 12+ |
| Developer | Prevent Biometrics, Inc | Asira LLC |
Customer experience
Prevent
Asira Core
In-app purchases
Prevent
No in-app purchases
Asira Core
- Asira+ - Monthly3 Days trial$9.991 Month
- Asira+ - Annual3 Days trial$99.991 Year









