Most workout apps give you a generic plan and call it personalized. Whistle actually knows you. It reads your Apple Health data and builds a real training plan around your fitness level, recovery, and goals. Detailed workouts, smart progression, all on your iPhone and Apple Watch. Whether you're just getting started or pushing toward a new personal best, your AI coach figures out what you need and when you need it. Your data. Your plan. Your pace.
Hey Product Hunt!
We've been working on Whistle for months. It started when I was training for my first triathlon and tried using ChatGPT to build a plan. It worked, but it took a ton of manual back and forth. So we decided to build something that just knows you from the start.
We're two indie developers from Vienna, and Whistle is our attempt to build the fitness app of our dreams. Hope you enjoy it as much as we loved building it.
Would love to hear what you think!
Clemens
Love the personalized progression system. Most apps just recycle the same routines regardless of recovery or fitness level.
Congrats on the launch, the Apple Health-native approach makes a lot of sense. Quick question on positioning: how do you see Whistle fitting alongside something like Bevel? They read the same Apple Watch data, but Bevel mostly tells me how recovered I am and leaves the training calls to me, whereas Whistle sounds like it actually builds and rewrites the plan itself. Is that prescriptive side the main thing you're betting on?
The personalized plan is the easy half. The hard half is week two, when motivation dips and people quietly ghost the app. I build habit and wellbeing tools, and the missed-day moment is everything... guilt-trip people and they churn, let them off too easy and the habit never sets. How are you handling the broken streak?
I've been using it since the Beta and it actually helped me improve my performance, specially on cycling as I sucked at it lol
Can you walk through a concrete example of how Whistle uses training load + projected load + sleep/vitals + recent sessions to change a plan (e.g., swapping intervals, adjusting volume, adding recovery, moving strength) and what safety/guardrail rules prevent over-aggressive recommendations?
Hey Clements, congrats on launching your venture! Question though: does the Wistle provides exercises or it only about running and biking?
Best
George
About Whistle on Product Hunt
“A fitness coach with personalized plans”
Whistle launched on Product Hunt on June 9th, 2026 and earned 117 upvotes and 21 comments, placing #14 on the daily leaderboard. Most workout apps give you a generic plan and call it personalized. Whistle actually knows you. It reads your Apple Health data and builds a real training plan around your fitness level, recovery, and goals. Detailed workouts, smart progression, all on your iPhone and Apple Watch. Whether you're just getting started or pushing toward a new personal best, your AI coach figures out what you need and when you need it. Your data. Your plan. Your pace.
Whistle was featured in Health & Fitness (82.8k followers), Artificial Intelligence (471k followers) and Apple (15.5k followers) on Product Hunt. Together, these topics include over 132.5k products, making this a competitive space to launch in.
Who hunted Whistle?
Whistle was hunted by Clemens Scholz. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Whistle stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Clemens Scholz