Comparison

FTNSS vs Sleep Key

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

Head to head
About

FTNSS

Purchase short-term gym access, including day and week passes, without long-term contracts. Discover and book local gyms, fitness classes, and personal trainers with flexible payment options.

Highlights
  • Short-term gym day/week passes
  • Find gyms by location
  • Book fitness classes
  • Find personal trainers
  • Seamless booking and payment
  • Gym reviews and community
Features
Read full description

FTNSS: Flexible Gym Memberships for Your Active Lifestyle FTNSS is a revolutionary app designed for fitness enthusiasts who seek flexibility in their workout routines. With FTNSS, you can purchase short-term gym memberships, including day and week passes, without committing to long-term contracts. Whether you're traveling, trying out new fitness classes, or just prefer to pay as you go, FTNSS makes fitness more accessible than ever. Key Features: 1. Short-Term Memberships: Purchase day or week passes at participating gyms. No need to commit to monthly or annual memberships. Pay for access only when you need it, perfect for travelers, busy professionals, and casual gym-goers. 2. Find Gyms Near You: Use our location-based search to discover gyms in your area or wherever you travel. Filter gyms by specialization, such as weightlifting, yoga, pilates, CrossFit, martial arts, and more. 3. Flexible Gym Access: Choose from a variety of gyms with different amenities, equipment, and classes. Whether you prefer high-end gyms, boutique fitness studios, or budget-friendly options, FTNSS connects you with a range of fitness facilities. 4. Fitness Classes & Personal Training: Discover and book fitness classes like yoga, HIIT, cycling, and more. Find personal trainers and specialized fitness coaches to guide you through your workout. 5. Seamless Booking & Payment: Easily browse available gyms and passes, make bookings, and pay directly through the app. Secure payment options and instant access to gyms once your pass is confirmed. 6. Community & Reviews: Read reviews from other users to find the best gyms and classes in your area. Share your experiences and help others find great workout spots. 7. No Hidden Fees: Transparent pricing with no long-term contracts or hidden costs. You pay only for what you use. 8. Perfect for Travelers: Stay active wherever you are! FTNSS makes it easy to find gyms while on vacation or business trips. Enjoy short-term access to gyms around the world, with no need for a local membership. 9. Specialized Gyms & Studios: Explore gyms that cater to specific interests, from weightlifting and cardio to yoga, Pilates, and more. Find the right environment to achieve your fitness goals. 10. Fitness at Your Fingertips: FTNSS is designed to give you control over your fitness routine. With just a few taps, you can find, book, and access gyms that meet your needs. Why Choose FTNSS? At FTNSS, we believe that fitness should be flexible, accessible, and tailored to your lifestyle. Whether you're a fitness enthusiast or someone who just wants to try out new gyms, FTNSS gives you the power to customize your workout routine without the hassle of long-term commitments. Stay active, stay healthy, and enjoy fitness on your terms with FTNSS. Download FTNSS today and start your journey towards a healthier, more active lifestyle!

About

Sleep Key

This app analyzes your sleep patterns, detects snoring and environmental noise, and offers a smart alarm to wake you during your lightest sleep phase. It also correlates sleep quality with weather conditions and integrates with health data to provide insights for better rest.

Highlights
  • Intelligent smart alarm
  • Snore and audio recorder
  • Environmental noise analysis
  • Weather and sleep correlation
  • Heart rate and respiratory rate monitoring
  • Sleep stage tracking
  • Apple Health integration
Features
Read full description

Stop waking up tired. Master your rest with Sleep Key. Sleep Key is the intelligent sleep tracker, smart alarm, and comprehensive sleep analyzer designed to help you build better bedtime habits. By combining clinical-grade data analysis with your device's advanced sensors, Sleep Key gives you a complete picture of what happens when the lights go out. Whether you struggle with snoring, insomnia, sleep debt, or simply want to optimize your morning routine, Sleep Key provides the data you need to wake up feeling energized, not groggy. THE PROBLEM: WHY ARE YOU TIRED? Traditional alarm clocks ignore your body's biological needs. They jolt you awake at a specific time, often interrupting a cycle of deep sleep or REM sleep. This leaves you with "sleep inertia"—that groggy, heavy feeling that even coffee can barely fix. Furthermore, environmental factors like room noise, temperature, and even the weather outside can secretly sabotage your recovery. THE SOLUTION: Sleep Key turns your phone into a private sleep laboratory. It monitors your movements, heart rate, respiratory rate, and bedroom sounds to determine exactly where you are in your sleep cycle. CORE FEATURES INTELLIGENT SMART ALARM Wake up at the perfect moment. Sleep Key monitors your sleep cycles in real-time. Instead of a fixed time, you set a 30-minute wake-up window. The app waits for your lightest sleep phase—when your body is naturally ready to wake up—and gently activates the alarm. The result? You wake up feeling refreshed, alert, and ready to conquer the day. ADVANCED SNORE AND AUDIO RECORDER Do you talk in your sleep? Do you snore? Is a noisy neighbor ruining your night? • Snore Detection: Automatically detects and isolates snoring sounds. Useful for identifying trends or sharing with a doctor. • Sleep Talking: Capture funny or insightful moments from your dreams. • Environmental Noise: Analyze ambient noise levels to see if your bedroom is too loud for deep sleep. • Playback: Listen to your audio highlights the next morning. EXCLUSIVE: WEATHER AND SLEEP CORRELATION Sleep Key is one of the only trackers that correlates your sleep quality with local weather conditions. • Barometric Pressure: See if pressure changes cause you restless nights. • Temperature & Rain: Discover if you sleep deeper during thunderstorms or heatwaves. • Data-Driven Insights: Use this data to adjust your room temperature or bedding for a better night's rest. HEALTH AND VITALS MONITORING We go beyond simple time tracking. Sleep Key leverages Apple Health integration and device sensors to track vital metrics: • Heart Rate Analysis: Visualize your resting heart rate curve. A "dip" in heart rate is a key indicator of restorative sleep and physical recovery. • Respiratory Rate: Monitor your breathing variance to detect irregularities or potential obstructions. • Sleep Stages: View detailed graphs showing exactly how much time you spent in Light Sleep, Deep Sleep, and REM (Rapid Eye Movement). SLEEP NOTES AND LIFESTYLE TAGS Track how your daily choices affect your night. Tag your sessions with variables like "Caffeine," "Alcohol," "Late Workout," "Stress," or "Screen Time." Over time, Sleep Key will show you specifically which habits are hurting your sleep quality score. 100% PRIVATE AND OFFLINE Your health data is personal. Most sleep apps require you to create an account and upload your intimate bedroom recordings to the cloud. Sleep Key is different. We prioritize on-device processing to ensure your privacy. WHO IS THIS APP FOR? • People who wake up feeling groggy or exhausted. • Partners trying to prove who snores louder. • Athletes focused on recovery and physical performance. • Bio-hackers interested in the quantified self. • Anyone who wants to understand their health without sacrificing privacy. Start sleeping better tonight. Download Sleep Key today. Terms of Use: https://moesaid.com/projects/sleep-key/terms-of-use

Screenshots

FTNSS4 screens
Sleep Key4 screens

Verdict

The call

The clearest difference is rating: FTNSS at 5.0 against Sleep Key's 4.0. FTNSS also leads on in-app purchases (none vs 2) and iOS requirement (13.4 vs 15.0). Sleep Key's advantage is ratings volume (6 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sleep Key sells 2 in-app purchases, starting at $9.99 per month. FTNSS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FTNSS holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Sleep Key has 6 ratings behind it against 1, so its average is the more settled of the two.

Scorecard5 real differences · 5 level
FTNSS versus Sleep Key: the parameters behind the verdict, then further details
ParameterFTNSSSleep Key
PriceFreeFree
Rating5.0 (1 ratings) — better4.0 (6 ratings)
Positive reviews—50.0% of reviews
Number of ratings16 — better
Update frequency—Every 9 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.4 — better15.0
Further details — not scored
Size51 MB144 MB
Age rating4+4+
DeveloperFTNSS Inc.Waqto LLC

Customer experience

FTNSS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Sleep Key

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

None

FTNSS

No in-app purchases

2 purchases

Sleep Key

Subscriptions2
  • Premium (Month)$9.991 Month
  • Annual$59.991 Year

Questions

Is FTNSS free?
FTNSS is free to download, with no in-app purchases.
Is Sleep Key free?
Sleep Key is free to download, with in-app purchases available.
Which has better reviews, FTNSS or Sleep Key?
FTNSS is rated higher. FTNSS averages 5.0 out of 5 from 1 ratings, while Sleep Key averages 4.0 from 6 ratings.
Do FTNSS or Sleep Key have ads?
Neither FTNSS nor Sleep Key shows ads.

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