VITAL RING vs Spark (598450)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VITAL RING
This app monitors and analyzes key body vitals in real time, offering personalized health insights for optimal management. It tracks heart rate, sleep, stress, and more, all displayed intuitively through a connected wearable device.
- Real-time vital sign monitoring
- Heart rate and HRV tracking
- Respiration rate measurement
- Sleep and stress analysis
- Personalized health information
- Long-term health reports
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VitalRing is an app that measures and analyzes various vital signs of our body in real time, showing our health status intuitively. It monitors major biometrics of our body such as heart rate, heart rate variability, respiration rate, steps, calorie expenditure, distance traveled, sleep status, and stress changes, providing personalized health information and helping with optimal health management. VitalRing is a ring-shaped wearable device without a screen, and all data is displayed in the VitalRing app, allowing you to focus on your health. Here's how to use the VitalRing and its app: - Wear the VitalRing device It is recommended to wear the VitalRing on your index, middle, or ring finger for the most accurate measurement. When wearing the ring, ensure that the sensor part is correctly positioned facing your palm. - Install and connect the VitalRing app Download and install the dedicated app for VitalRing from the smartphone app store. Then, launch the app and turn on the Bluetooth of your smartphone to pair with the ring. - Enter personal information After the first launch of the app, enter your personal information so that VitalRing can provide personalized health information. - Check real-time health information When you wear the VitalRing, it measures vital signs in real time and sends them to the app. You can always check major biometric data in the app. - Sleep and stress analysis VitalRing analyzes your sleep time and quality to suggest improvements. It also measures stress levels to help manage stress. - Team care service Try using the remote monitoring function in the VitalRing app to share health information with friends and family and manage each other's health. - Health report If you use VitalRing for more than 3 months, it provides health reports based on the accumulated data on a weekly, monthly, and yearly basis. [Not for medical use] VitalRing is not a medical device. It is a tool that helps observe and manage your health status, not diagnose or treat diseases. If you have health problems or concerns about your health, it is best to consult with a healthcare professional.
Spark (598450)
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Motivation shouldn’t make you feel worse. Spark is a kinder way to work toward a healthier, happier you- built with the ADHD brain in mind, but designed for anyone who’s tired of all-or-nothing thinking, guilt, and starting over. Instead of asking you to be perfect, Spark helps you notice what’s actually happening. Tell your story. Check in about yesterday — your weight if you’re tracking it, the things that helped, the things that got in the way, and the wins that deserve more credit than they usually get. Meet your Pixies. Movement, water, protein, rest, veggies, calm, and other positive choices become Pixies worth celebrating. Because progress is more than a number on a scale. Name your Gremlins. Stress. Poor sleep. Hormones. Salty food. Couch-potato days. Spark treats them as information, not evidence that you “failed.” Gremlins can show up and Pixies can still visit on the very same day. See your whole Journey. Spark brings your weight, check-ins, Pixies, and Gremlins together so you can see the story behind the numbers. Over time, Spark can notice patterns in your own history and remind you what has tended to work well for you. Choose Your Spark. Choose the thing you’re excited to work on right now. Your Spark can last a day, a week, or however long it still feels right. Change it whenever you want. There are no streaks to protect and no rules about how long you have to stick with it — because what motivates you today doesn’t have to be what motivates you next week. Call in SOS backup. You know that moment when you’re about to do something you know you don’t really want to do... but you’re probably going to do it anyway? That’s what SOS backup is for. Give yourself two minutes. Get distracted, talk it through, or find a smaller option — with a slightly chaotic crew of gnomes ready to help. No streaks to protect. No perfect days required. No shame. Spark was created around a simple idea: healthier choices don’t have to be all or nothing. Your story will have good days, rough days, Pixies, Gremlins, unexpected victories, changed plans, and probably a little chaos. We’re all only human. Spark was built for that. Small steps. A brighter you.
Screenshots
Verdict
The clearest difference is update cadence: VITAL RING at every 9 days against Spark (598450)'s every 3 weeks. On price, ads, in-app purchases and device support 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.
VITAL RING ships an update every 9 days, Spark (598450) every 3 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | VITAL RING | Spark (598450) |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 79 MB | 186 MB |
| Age rating | 17+ | 4+ |
| Developer | ZTACOM Corp. | Dianna Dick |
In-app purchases
VITAL RING
No in-app purchases
Spark (598450)
No in-app purchases









