Comparison

Sudor Interactive vs CalmingVibration

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

Head to head
About

Sudor Interactive

Access guided audio runs for all levels, from couch to 5k to half marathon training. Discover top workouts and classes from global trainers, including yoga and meditation. Connect with others through communities for motivation and inspiration.

Highlights
  • Guided audio runs
  • Top workouts and classes
  • Yoga and meditation sessions
  • Music integration (Apple Music/Spotify)
  • Community features
  • Challenges
Features
Read full description

You can now access guided audio runs through Sudor. Whether you’re starting couch to 5k, wanting to improve your time at park run, or training for a half marathon there is a coached run for you. And in case you’re not in the mood for a run - Sudor scores you instant access to top workouts and classes from the most sought-after trainers and gyms, worldwide. Whether you want to move your body at home, or in the gym there’s something for you. It’s time to get moving. At Sudor, our goal is simple: we want to get the whole world moving more. We love working out - and we want you to fall in love with moving your body too. We have travelled the world looking for the very best workouts and trainers. Whether you’re in the mood for a good sweat, a relaxing yoga session or even a 10 minute meditation - you can find it all in one place on Sudor. We are constantly adding new workouts, trainers and challenges to keep you motivated and moving. Challenges include a curated set of sessions, for you to complete in a set amount of time - perfect for when you need a little bit more motivation or structure. In addition, you can workout to your favourite soundtracks when you link your Apple Music or Spotify to Sudor. And now, you can create communities within the app, or join existing ones to meet new friends! Lets motivate and inspire each other to be 1% better every day. Sudor is more than an app - its a ready made family just waiting for you to join. So, what are you waiting for? It’s time to #MoveWithSudor! All subscriptions auto-renew and can be cancelled at any time - you're in control. Terms of use: https://sudor.fit/terms-and-conditions.html

About

CalmingVibration

This app uses your Apple Watch's haptic engine to deliver rhythmic vibrations for stress relief and focus. It integrates with HealthKit to monitor stress indicators and offers personalized haptic sessions tailored to your needs.

Highlights
  • Haptic-driven relaxation
  • Smart stress detection using HealthKit
  • Personalized haptic sessions
  • Real-time stress monitoring
  • Customizable session durations and types
  • User-friendly interface
Features
Read full description

CalmingVibration – Soothe Stress with Your Apple Watch Discover a moment of calm with CalmingVibration, the innovative WatchOS app designed to help you manage stress. Harnessing the power of your Apple Watch’s haptic engine, CalmingVibration delivers gentle, rhythmic vibrations to promote relaxation (or focus) and restore balance, right from your wrist. Why CalmingVibration? Personalized Stress Relief: Using HealthKit data like Heart Rate Variability (HRV) and Resting Heart Rate (RHR), CalmingVibration intelligently detects stress levels in real-time and suggests soothing haptic sessions tailored to your needs. Our app uses carefully crafted haptic patterns to calm your nervous system, helping you feel centred. Seamless Integration: Fully compatible with WatchOS 10 and above, CalmingVibration taps into Apple’s HealthKit to monitor your stress indicators and provide actionable insights. Customizable Experience: Adjust session durations, session types (will change the haptic feedback accordingly) and stress detection settings to match your preferences.  Choose intelligent learning-derived baselines or custom thresholds for a truly personalized experience. Real-Time Stress Monitoring: Stay informed with real-time updates on your stress levels, displayed with intuitive emojis and color-coded feedback. Key Features: Haptic-Driven Relaxation: Enjoy customizable vibration patterns to ease stress, from gentle clicks to soothing success haptics. Smart Stress Detection: Leverage HRV and RHR data to identify high or moderate stress levels and receive proactive suggestions for calming or focus sessions. After each session, connect with the Mindfulness app to track your progress and stress levels. User-Friendly Interface: A sleek, intuitive design with a pulsating animation to guide you through sessions, plus easy access to settings for a tailored experience. How It Works: Monitor: CalmingVibration uses HealthKit to track your HRV and RHR, calculating your stress level based on customisable or derived baselines. Relax/Focus: Start a session (1–5 minutes) with specific haptic feedback designed to soothe your nervous system. Reflect: After each session, check your stress levels in the Mindfulness app to see the difference and allow your Apple Watch to re-calculate your HRV and update your RHR [Apologies, Apple (still) doesn't provide an API to trigger that calculation from the App]. Perfect for Everyone Whether you’re navigating a busy workday, preparing for a big moment, or simply seeking a moment of peace, CalmingVibration is your companion for stress relief on the go. Designed for WatchOS 10+, it’s optimized for seamless performance on your Apple Watch. Download CalmingVibration today and feel the difference a moment of calm can make! Notes  CalmingVibration requires access to HealthKit for HRV and RHR data.  Ensure your Apple Watch is running WatchOS 10 or later for the best experience.   Prolonged usage of the haptic feedback may drain the Apple Watch battery. Health claims are not verified by the FDA and are not intended for medical purposes.

Screenshots

Sudor Interactive4 screens

Verdict

The call

The clearest difference is review sentiment: Sudor Interactive at 83% against CalmingVibration's 33%. Sudor Interactive also leads on price (Free vs $1.99) and rating (4.7 vs 2.3). CalmingVibration's advantage is in-app purchases (none vs 4) and chart position (#199 vs unranked). On ads 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

CostPrice · In-app purchases · Ads · Monetization

Sudor Interactive is free to download; CalmingVibration costs $1.99 up front. Sudor Interactive sells 4 in-app purchases, starting at $9.99 per month. CalmingVibration asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sudor Interactive holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: Sudor Interactive has 31 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 83% of Sudor Interactive's written reviews are positive against 33% of CalmingVibration's.

UpkeepUpdate frequency

Sudor Interactive ships an update every 3 weeks, CalmingVibration every 4 months. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

Scorecard9 real differences · 2 level
Sudor Interactive versus CalmingVibration: the parameters behind the verdict, then further details
ParameterSudor InteractiveCalmingVibration
PriceFree — better$1.99
Rating4.7 (31 ratings) — better2.3 (3 ratings)
Positive reviews83.3% of reviews — better33.3% of reviews
Number of ratings31 — better3
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
Best chart rank—#199 — better
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS15.013.0 — better
Further details — not scored
Size138 MB1 MB
Age rating4+4+
DeveloperGlobal Fitness Holdings LtdRaffaele De Lorenzo

Customer experience

Sudor Interactive

All ratings31 ratings
Positive93.5%
Neutral0.0%
Negative6.5%
Written reviews12 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

CalmingVibration

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

4 purchases

Sudor Interactive

Subscriptions4
  • Single Trainer Monthly7 Days trial$9.991 Month
  • Unlimited Trainers Monthly7 Days trial$15.491 Month
  • Single Trainer Annual$50.991 Year
Show 1 more
  • Unlimited Trainers Annual$60.991 Year
None

CalmingVibration

No in-app purchases

Questions

Is Sudor Interactive free?
Sudor Interactive is free to download, with in-app purchases available.
Is CalmingVibration free?
CalmingVibration costs $1.99, with no in-app purchases.
Which has better reviews, Sudor Interactive or CalmingVibration?
Sudor Interactive is rated higher. Sudor Interactive averages 4.7 out of 5 from 31 ratings, while CalmingVibration averages 2.3 from 3 ratings.
Do Sudor Interactive or CalmingVibration have ads?
Neither Sudor Interactive nor CalmingVibration shows ads.
Which is updated more often, Sudor Interactive or CalmingVibration?
Sudor Interactive ships an update every 3 weeks, and CalmingVibration every 4 months. Most recently, Sudor Interactive was updated on October 14, 2026 and CalmingVibration on October 6, 2026.

Other comparisons