Selfloops Spark vs Sleep Time Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Selfloops Spark
This app helps athletes and fitness enthusiasts track, analyze, and optimize their workouts. It offers personalized training plans, goal setting, and performance insights. Connect with coaches and other users for motivation and feedback.
- Workout tracking and analysis
- Fitness challenges and goal setting
- Personalized training plans
- Heart rate monitoring
- RPE logging
- Data syncing with Apple Health
- Advanced performance analytics
Read full descriptionHide full description
Take Your Sports Performance to the Next Level with SELFLOOPS SELFLOOPS is an advanced fitness and sports performance tracking app for Apple Watch and iPhone, designed for athletes, coaches, and fitness enthusiasts who want deeper insights into their training. Track, Analyze, and Optimize Your Workouts The iPhone app allows you to: - View and analyze your workouts from SELFLOOPS.COM - Join fitness challenges to stay motivated - Set and track weekly fitness goals - Sign up for group fitness classes - Follow personalized training plans created by your coach - Add workout notes and see feedback from your coach - Log your Rate of Perceived Exertion (RPE) to better understand your effort levels The Apple Watch app enables you to: - Use your Apple Watch as a heart rate monitor for SELFLOOPS Group Fitness classes - Track cardio workouts with real-time heart rate data - Monitor workouts on Concept2 rowers, BikeErgs, and SkiErgs - Connect to indoor rowers, treadmills, bikes, and trainers supporting Bluetooth FTMS, Cycling Power, and Speed & Cadence standards Seamless Data Syncing All your workouts automatically sync with Apple Health, Apple Activity, and the SELFLOOPS website, ensuring your training data is always up to date. Unlock Advanced Performance Insights with Athlete Premium Upgrade to Athlete Premium to access powerful sports performance analytics and connect to top third-party platforms, including Garmin, Wahoo Fitness, Polar, Withings, and Concept2. With Athlete Premium, you can also: - Export Apple Health data like sleep, steps, resting heart rate, HRV, and more to SELFLOOPS for deeper analysis - Get access to exclusive tools for elite-level performance tracking Ready to Elevate Your Training? Download SELFLOOPS today and start training smarter! Terms of Service: https://www.selfloops.com/tos.html
Sleep Time Calc
Read full descriptionHide full description
Optimize your sleep with the smart sleep time calculator! • Calculate the optimal time to wake up and fall asleep, customize your sleep cycles to your preferences. • Customize the app's interface to your liking. • Don't forget the importance of proper sleep preparation. A helpful reminder will remind you in time to sink into an atmosphere of tranquility before going to sleep.
Screenshots
Verdict
The clearest difference is in-app purchases: Sleep Time Calc at none against Selfloops Spark's 1. Sleep Time Calc also leads on iOS requirement (14.0 vs 18.0). On price, 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
Both are free to download. Selfloops Spark sells 1 in-app purchase, starting at $69.99 per year. Sleep Time Calc asks for nothing beyond the download.
| Parameter | Selfloops Spark | Sleep Time Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (13 ratings) — better | — |
| Positive reviews | 25.9% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | SELFLOOPS SNC DI DEL ROSSO CHRISTIAN E RIBICHINI PIERO | Pavel Moslienko |
In-app purchases
Selfloops Spark
- Athlete Premium$69.991 Year
Sleep Time Calc
No in-app purchases
Questions
Is Selfloops Spark free?
Is Sleep Time Calc free?
Do Selfloops Spark or Sleep Time Calc have ads?
Other comparisons















