HIIT Timer vs Solo Run Club

Interval Flex: Advanced Interval Timer Create complex interval sequences that simple timers can't handle. Perfect for HIIT workouts with group repetitions, breathwork patterns like 4-7-8 breathing, and pyramid training routines. Why Choose Interval Flex: - Complex Patterns: Group intervals and repeat sections - ideal for boxing rounds, Tabata circuits, and breathing exercises - Smart Grouping: Set up sequences like "warm-up, then repeat high-intensity/rest 5 times, then cool-down" - Breathwork Templates: Pre-built sequences for 4-7-8 breathing, box breathing, and custom patterns - Template Library: HIIT, Tabata, pyramid workouts, and meditation timers ready to use - Visual Feedback: See which intervals are grouped and how many repetitions remain - Multisensory Alerts: Sound, vibration, and visual cues for seamless transitions Perfect For: - Complex HIIT workouts with grouped intervals - Breathwork and meditation sequences - Tabata training with custom rest periods - Pyramid interval training - Any timing pattern simple apps can't create Built for users who need more than basic 30-second/10-second timers. If you've been frustrated by simple interval apps, Interval Flex gives you the flexibility to create exactly the sequences you need. Download now and build the perfect timer for your routine!

Solo Run Club is the simplest app to track your runs and shoes. It provides quick insights on weekly volume and heart rate, and it provides an easy UI to track mileage on each pair of shoes. I built this to simplify my run tracking.  None of the other apps I've tested are as accurate as Apple Watch workouts, and some of them would even crash midway through a run. I couldn't find any free apps that used Workouts, allowed tracking mileage on shoes, and included workout planning capabilities.. so I built one. There are no ads, analytics, or social features. My goal was to build an app that lets you get in and out quickly. How do I use it? - Record a run with your Apple Watch (or another app that writes to Health) - Approve Health permissions and see your runs! If you have any feature suggestions or encounter issues, please reach out to the support email.