# SleepStream 2 Ultimate vs HeartMath The clearest difference is price: HeartMath at Free against SleepStream 2 Ultimate's $9.99. HeartMath also leads on rating (4.9 vs 4.5) and ratings volume (4.6K vs 188). SleepStream 2 Ultimate's advantage is in-app purchases (none vs 5) and review sentiment (81% vs 73%). On ads there is nothing between them. HeartMath is free to download; SleepStream 2 Ultimate costs $9.99 up front. HeartMath sells 4 in-app purchases, starting at $39.00 per year. SleepStream 2 Ultimate asks for nothing beyond the download. HeartMath holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: HeartMath has 4.6K ratings behind it against 188, so its average is the more settled of the two. Written reviews complicate that: 81% of SleepStream 2 Ultimate's written reviews are positive against 73% of HeartMath's, so the app with the better star average is not the one people write more warmly about. SleepStream 2 Ultimate ships an update every 2 months, HeartMath every 3 weeks. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively. ## The numbers | Metric | SleepStream 2 Ultimate | HeartMath | | --- | --- | --- | | Price | $9.99 | **Free** | | Rating | [4.5 (188 ratings)](https://appshunter.io/ios/app/sleepstream-2-ultimate/id535583437/reviews) | **[4.9 (4.6K ratings)](https://appshunter.io/ios/app/heartmath/id6446414998/reviews)** | | Number of ratings | 188 | **4.6K** | | Positive reviews | **81.3% of reviews** | 73.1% of reviews | | In-app purchases | **No** | Yes | | Ads | No | No | | Update frequency | Every 2 months | **Every 3 weeks** | | Monetization | Paid | **Freemium** | | Size | 32 MB | 185 MB | | Requires iOS | **9.0** | 26.0 | | Devices | **iPhone, iPad, iPod** | iPhone | | Age rating | 12+ | 4+ | | Developer | [Explosive Apps](https://appshunter.io/developer/300812186) | [HeartMath Inc.](https://appshunter.io/developer/482739914) | ## What reviewers say ### SleepStream 2 Ultimate [App page](https://appshunter.io/ios/app/sleepstream-2-ultimate/id535583437) This app provides a comprehensive suite of tools to enhance sleep and relaxation. It offers a variety of calming sounds, guided meditations, and visual experiences designed to help users unwind and achieve restful sleep. **Highlights:** Quality audio with calming sounds, Guided meditations and music, Breathtaking visualizations and moodlights, Binaural & Isochronic brainwave programs, Unique audio engine for sound mixing, AirPlay support **Features:** macOS Compatibility, Vision Pro support **In-app purchases:** none **What reviewers like** - 👍 Helps with sleep, relaxation, and focus - 🚀 Customizable sound options - 💡 Variety of binaural beats and overlays - 👍 Useful for meditation and anxiety reduction - 👍 Helps with tinnitus and headaches **What reviewers complain about** - 🐛 Crashes when trying to download additional content - 🔍 App not updated in years, feels outdated - 💰 Expensive for an app that hasn't been updated - 🔍 Scaling issues on iPad Pro - 🔍 Difficulty navigating and selecting options **Reported bugs** - Crashes when trying to download additional content - Scaling issues on iPad Pro - Difficulty navigating and selecting options **Requested features** - Longer timer options (up to 8 hours) - Sleep analysis and tracking features - More guided meditations and new sound content - Ability to import custom music/sounds - Airplay and Bluetooth speaker support ### HeartMath [App page](https://appshunter.io/ios/app/heartmath/id6446414998) This app helps you manage stress, improve focus, and achieve optimal performance by aligning your heart, mind, and emotions. It offers guided sessions, immersive journeys, and coherence practices based on over 30 years of research. **Highlights:** Real-time HRV Coherence Measurement, Coherence Training, Scientifically Validated Techniques, Guided Learning Sessions, Progress Tracking, Heart-Brain Coherence Benefits **Features:** Vision Pro support **In-app purchases (4)** | Purchase | Price | Billing | | --- | --- | --- | | HeartMath Premium | $39.00 | per year | | HeartMath Premium | $59.00 | per year | | HeartMath Premium | $79.00 | per year | | HeartMath Premium | $99.99 | per year | **What reviewers like** - 🚀 Huge improvement over previous app - 👍 Easy to use and highly recommended - 💡 Loaded with HeartMath techniques and courses - 👍 Powerful tool for nervous system balance and anxiety reduction - 👍 Helps achieve a better mental state **What reviewers complain about** - 🐛 Connectivity issues with sensor - 🐛 Sensor not compatible with older devices - 🐛 App crashes and freezes on newer devices - 🐛 Inaccurate heart rate and coherence readings - 🐛 Disruptive screen sleep behavior during sessions **Reported bugs** - Sensor connection issues on newer devices - App crashes and freezes on iPhone 16 Pro - Inaccurate heart rate and coherence readings - Screen sleep behavior disrupting sessions **Requested features** - Add dark mode option - Allow playing music/sounds during sessions - Provide audio feedback on coherence levels - Add session history customization and details - Improve sensor compatibility with older devices ## Frequently asked questions ### Is SleepStream 2 Ultimate free? SleepStream 2 Ultimate costs $9.99, with no in-app purchases. ### Is HeartMath free? HeartMath is free to download, with in-app purchases available. ### Which has better reviews, SleepStream 2 Ultimate or HeartMath? HeartMath is rated higher. SleepStream 2 Ultimate averages 4.5 out of 5 from 188 ratings, while HeartMath averages 4.9 from 4.6K ratings. ### Do SleepStream 2 Ultimate or HeartMath have ads? Neither SleepStream 2 Ultimate nor HeartMath shows ads. ### Which is updated more often, SleepStream 2 Ultimate or HeartMath? SleepStream 2 Ultimate ships an update every 2 months, and HeartMath every 3 weeks. Most recently, SleepStream 2 Ultimate was updated on September 27, 2026 and HeartMath on September 28, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*