S vs SwimPaceTimer
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.
SwimPaceTimer
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SwimPaceTimer is an Apple Watch interval timer for the pool. Three settings, that's it: distance, reps, and your send-off cycle. MADE FOR SWIMMERS WHO - are tired of watching the pace clock and counting in their head - just want to hold a send-off without fiddling with settings mid-set WHAT IT DOES - Build a set: distance x reps x send-off cycle (e.g. 25yd x 5 @ 1:30) - Tap start, get 5 seconds on the wall, then push off on the buzz - A heads-up buzz 5 seconds out, then a start buzz - hold your cycle without looking at your wrist - Countdown ring, rep dots, heart rate, split and total time at a glance - Live heart rate on screen while you swim WORKS ALONGSIDE THE WORKOUT APP SwimPaceTimer is a send-off timer, not a tracker. It never takes over a workout you are already recording. Start a pool swim in the built-in Workout app if you want it saved to Health — that also turns on Water Lock for you — then let SwimPaceTimer handle the send-offs. BUILT FOR THE WATER Screens are hard to read and harder to tap when you're wet. Set everything on the wall before you push off, then swim - your wrist tells you when to go. Yards or meters follows your region automatically.
Screenshots
Verdict
The clearest difference is update cadence: SwimPaceTimer at every 5 days against S's every 4 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.
S ships an update every 4 weeks, SwimPaceTimer every 5 days. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.
| Parameter | S | SwimPaceTimer |
|---|---|---|
| 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 | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 39 MB | 1 MB |
| Age rating | 12+ | 4+ |
| Developer | Wellysis Corp. | Kyunghyun Choi |
In-app purchases
S
No in-app purchases
SwimPaceTimer
No in-app purchases









