Comparison

S vs Nightloop

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Nightloop

Features
Read full description

Do you talk in your sleep? Nilo knows. Nightloop is a sleep app with Nilo, a purple plush who stays by your side at night. He listens while you sleep, keeps the funniest moments, and tells you all about it in the morning. YOUR NIGHT, REPLAYED • Nilo listens all night: Apple's on-device sound recognition picks out sleep talk, snoring and laughs, and keeps only a few seconds around each one. • Every morning, your best moments are waiting: what you said, written down on your iPhone, with Nilo's reaction. • Personal lines (optional, only with your permission): Nilo answers exactly what you said. FALL ASLEEP • 10 bedtime stories told with music and real sound effects • 10 breathing exercises with a guide that breathes with you: 4-7-8, box breathing, coherent breathing… • 10 sounds to drift off: rain, ocean, fan… WAKE UP BETTER • A gentle alarm that starts in silence and slowly gets louder, like daylight • Or Nilo himself wakes you up, from “Sweet” to “Chaos” • Smart alarm: pick a window, and Nilo wakes you as soon as he hears you stirring in it (when Nilo is listening) EVERY MORNING COUNTS • Rate your night by pulling down Nilo's duvet • Your sleep age, estimated from your nights: it gets younger as you sleep better. Watch the years you win, beat your record, unlock milestones and badges. • Keep your streak going, morning after morning • Connect Apple Health (optional, read only) to use the nights measured by your watch or ring PRIVATE BY DESIGN • Your recordings never leave your iPhone and are deleted after 7 days. You can delete them all at any time. • No ads, no tracking. Sleep age is an estimate to help you build better habits, not a medical measurement. Nightloop is not a medical device. SUBSCRIPTION Nightloop needs a subscription: weekly or yearly, each starting with 7 free nights. Payment is charged to your Apple ID when the free trial ends. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Terms of Use: https://nonameusera.github.io/nightloop-legal/terms.html Privacy Policy: https://nonameusera.github.io/nightloop-legal/privacy.html

Screenshots

S4 screens
Nightloop4 screens

Verdict

The call

The clearest difference is device support: S at 3 against Nightloop's 1. S also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

S ships an update every 4 weeks, Nightloop monthly. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
S versus Nightloop: the parameters behind the verdict, then further details
ParameterSNightloop
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size39 MB63 MB
Age rating12+12+
DeveloperWellysis Corp.COME CLEMENT GUILLAUME DELAMARE

In-app purchases

None

S

No in-app purchases

None

Nightloop

No in-app purchases

Questions

Is S free?
S is free to download, with no in-app purchases.
Is Nightloop free?
Nightloop is free to download, with no in-app purchases.
Do S or Nightloop have ads?
Neither S nor Nightloop shows ads.
Which is updated more often, S or Nightloop?
S ships an update every 4 weeks, and Nightloop monthly. Most recently, S was updated on October 4, 2026 and Nightloop on October 14, 2026.

Other comparisons