S vs HealthGrid
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S
This app works with a wearable ECG device to display real-time heart activity and rate. Users can log symptoms and activities in a diary and securely share data with healthcare professionals for informational purposes.
- Connects to S-Patch wearable device
- Real-time ECG signal display
- Continuous heart rate calculation
- Symptom and activity logging diary
- Secure cloud data upload
- Bluetooth disconnection alerts
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S-Patch Ex is an ECG monitoring app designed to work with the S-Patch wearable device. Once connected via Bluetooth, the app displays real-time ECG waveforms and heart rate (HR) values. It also allows users to log symptoms and activities through an in-app diary, and securely upload recorded data to a designated cloud platform for review by healthcare professionals. The S-Patch Ex App is intended to assist users in tracking and recording ECG and HR data for informational and wellness purposes only. It is not a medical device and should not be used to diagnose, treat, or monitor any medical conditions. Disclaimer: This app does not provide medical advice, diagnosis, or treatment. All displayed values are for informational use only and should not replace consultation with a qualified healthcare provider. Jurisdiction Statement: The S-Patch Ex App and the S-Patch device are cleared for use in South Korea and the United States. The S-Patch device is FDA-cleared in the United States. Use of the S-Patch Ex App outside these regions is not permitted unless additional regulatory clearances are obtained. Key features of the S-Patch Sports App: * Connects to the S-Patch wearable ECG monitoring device * Displays real-time ECG signals * Continuously calculates and shows heart rate * Allows users to log symptoms and activities with a diary feature * Start and end ECG recordings on demand * Securely uploads recordings to a cloud platform for healthcare provider review * Notifies users if the device becomes disconnected via Bluetooth The S-Patch Ex App requires a Serial Number from the S-Patch device to activate. To continuously display ECG and HR, the app must remain connected to the S-Patch device at all times.
HealthGrid
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Visualize your health data at a glance. HealthGrid turns your sleep, steps, and workout data into a beautiful 52-week heatmap, giving you an instant overview of your health patterns over time. FEATURES: • 52-week heatmap — color-coded grid with month/day labels • Sleep, Steps & Workouts — reads from Apple HealthKit • 10+ workout types — running, cycling, swimming, and more • Interactive callouts — tap any cell for detailed stats • Statistics & streaks — weekly averages and streak tracking • 6 color palettes — Green, Blue, Purple, Orange, Red, Pink • Dark mode — full light/dark/system theme support • Year navigation — browse historical data • Share as image — share your grid with friends • iOS home screen widget • 15 languages supported • CSV export FREE: Sleep & steps tracking, Green/Blue palettes, current year data PRO (one-time purchase): All color palettes, workout metrics, historical years, image sharing, CSV export, and more
Screenshots
Verdict
The clearest difference is in-app purchases: S at none against HealthGrid's 1. S also leads on update cadence (every 4 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. HealthGrid sells 1 one-off in-app purchase. S asks for nothing beyond the download.
S ships an update every 4 weeks, HealthGrid every 2 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.
| Parameter | S | HealthGrid |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | Wellysis Corp. | Il Gu Yi |
In-app purchases
S
No in-app purchases
HealthGrid
- HealthGrid Pro$1.99








