You track your steps. Your heart rate. Your calories. But what about your brain? Tacet gives you a daily cognitive fitness score and sleep quality tracking, drawn from the rhythm of how you tap your phone. Those timing patterns carry a surprisingly accurate signal about your cognitive state. No headset, no expensive hardware, no setup. Passive tracking, built on neuroscience research from Leiden University. Traditional brain monitoring is expensive. Tacet brings it to your pocket. Start today!
We are so proud of this launch and genuinely excited to share Tacet with you. Perfect for anyone who has always wanted a deeper look into their brain activity, without the price tag or the clinic visit!🧠
It turns out the way you tap your phone tells you something about your brain. Not what you type, not which apps you open, but the timing between your taps. That rhythm shifts when you are cognitively sharp, when you are fatigued, when your sleep has been poor. It is a signal that has always been there. We just built the software to read it. Brain monitoring has always been locked away in expensive hardware and clinical settings. Tacet changes that. It runs quietly in the background, no difficult setup and no expensive headset, and turns that tap signal into something you can actually use.
Here is what you get: 📱 A cognitive fitness score that shows how sharp your brain is performing, whenever you like 💤 Sleep quality tracking based on your behavioural patterns 📈 Longitudinal trends so you can see how your brain changes over days and weeks ☕ A log to add context like stress, caffeine, or a bad night, so your data actually means something.
📏 The perfect tool to measure whether a lifestyle change is having a real effect on your brain's performance
One thing worth knowing: the scores get more accurate after about two weeks of use. The algorithm needs time to learn your personal baseline. So download it today, let it run, and see your cognitive scores appear over time. That is when things start to get really interesting!
We are building towards a full remote brain monitoring platform, but we wanted to get something real into people's hands now. A first glimpse into your own brain, accessible to anyone with an Android smartphone (we are still working on the IOS release!!)
🎉 Product Hunt exclusive: we are offering a special discount during the first week of launch: A one month free trial! Grab it while it lasts.
How to use: Download the app, make an premium account trough settings and add the code FIRSTTAP for one month free!
Download the app and tell us what you think. What would you want to learn about your own brain most? We would love to hear your thoughts!
Heya, this looks cool. Would love to try a TestFlight build once on iOS! Consider posting that build to departures.to (free, I have no relationship with them, just have posted there and gotten lots of good beta feedback users, haha)
Hi Product Hunt! I am Vasiliki, UX researcher at Axite. Happy to see Tacet officially live on Product Hunt today!
A lot of thoughtful work went into shaping both the product experience and the science behind it. Excited to see where the team takes it next. ✨
How can those behavioural patterns be spotted? I understand that activity (mainly that physical one can be tracked by external devices - rings, watches), but what if I forgot to set my smartphone to track my brain activity?
I’m curious how you’ve worked through the wellness-scoring tension on the user side.
Cognitive scores are the single most anxiety-loaded thing to quantify, because brain decline is one of people’s deepest fears. What does Tacet do for a user whose score is trending the wrong way: stay observational, suggest action, surface professional help? And from early data, does the score motivate behavior change or mostly generate anxiety without corresponding levers the user can pull? Big congrats on launching!
So happy we finally launched and that people can now use this amazing product! For me the coolest thing is seeing your cognitive scores change over time and figure out what lifestyle works best for you and your brain🧠 Gongrats team!✨
Hi Product Hunt! I'm Nynke, Data Scientist at Axite. It's really exciting to see Tacet go out in the world.
Working at Axite, I’ve learned a lot about the brain and found it fascinating how much subtle stuff in how our brain functions can actually show up in data, often without us even realising it ourselves.
That’s also what I find so cool about Tacet; seeing those kinds of patterns become something people can actually see and explore for themselves from just their phone is pretty amazing.
Very excited to see what people think of it 📱
Hey Product Hunt! I'm Dirk, Data Scientist at Axite.
What excites me most about Tacet is that it makes something real and measurable out of a signal that has always been there. Every time you tap your phone, your brain is leaving a trace. Most people have no idea. The science behind this has been quietly building for years in research labs, and now it is finally in people's hands.
As someone who works with brain data every day, I find that genuinely thrilling. Your phone already knows more about your cognitive patterns than you do. Tacet just shows you what it knows.
Can't wait to hear what you think!
Hey Product Hunt! I'm Ruchella CTO of Axite.
🧠📱We built this app because we kept asking ourselves: why is it so hard to actually see your own brain health patterns? Tacet changes that. It passively monitors your smartphone behavior and shows you, your cognitive fitness and sleep patterns so you can make better decisions about your health.
During my PhD I worked with a group of talented scientists at Leiden University and University of Zurich who were researching how your smartphone behavior can be used to monitor your brain health. The algorithms behind this app has been published in multiple scientific publications.
Since then our team at Axite has been working hard to share the insights from these algorithms to you. We are excited to finally be able to share it today.
I really enjoyed building @Tacet . It’s been super exciting to work on something that takes everyday phone usage and turns it into meaningful insights about sleep and cognitive performance.
A lot of work went into making the experience feel simple and effortless for users, while doing some pretty complex things behind the scenes 😄
Can’t wait to see what people think and how the product evolves from here. Proud to be part of it 🙌
Hello Product Hunt - We are so excited to finally be sharing Tacet with you! It has been a long journey to get here and I hope you love it as much as we do! Happy tapping!
About Tacet on Product Hunt
“The brain monitor for cognitive health scores”
Tacet launched on Product Hunt on May 21st, 2026 and earned 112 upvotes and 19 comments, placing #10 on the daily leaderboard. You track your steps. Your heart rate. Your calories. But what about your brain? Tacet gives you a daily cognitive fitness score and sleep quality tracking, drawn from the rhythm of how you tap your phone. Those timing patterns carry a surprisingly accurate signal about your cognitive state. No headset, no expensive hardware, no setup. Passive tracking, built on neuroscience research from Leiden University. Traditional brain monitoring is expensive. Tacet brings it to your pocket. Start today!
Tacet was featured in Android (57.2k followers), Health & Fitness (82.7k followers), Productivity (652.1k followers) and Tech (623.9k followers) on Product Hunt. Together, these topics include over 363.8k products, making this a competitive space to launch in.
Who hunted Tacet?
Tacet was hunted by Charlotte. 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 Tacet stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Charlotte
Hey Product Hunt! I'm Charlotte, CEO at Axite.
We are so proud of this launch and genuinely excited to share Tacet with you. Perfect for anyone who has always wanted a deeper look into their brain activity, without the price tag or the clinic visit!🧠
It turns out the way you tap your phone tells you something about your brain. Not what you type, not which apps you open, but the timing between your taps. That rhythm shifts when you are cognitively sharp, when you are fatigued, when your sleep has been poor. It is a signal that has always been there. We just built the software to read it.
Brain monitoring has always been locked away in expensive hardware and clinical settings. Tacet changes that. It runs quietly in the background, no difficult setup and no expensive headset, and turns that tap signal into something you can actually use.
Here is what you get:
📱 A cognitive fitness score that shows how sharp your brain is performing, whenever you like
💤 Sleep quality tracking based on your behavioural patterns
📈 Longitudinal trends so you can see how your brain changes over days and weeks
☕ A log to add context like stress, caffeine, or a bad night, so your data actually means something.
📏 The perfect tool to measure whether a lifestyle change is having a real effect on your brain's performance
One thing worth knowing: the scores get more accurate after about two weeks of use. The algorithm needs time to learn your personal baseline. So download it today, let it run, and see your cognitive scores appear over time. That is when things start to get really interesting!
We are building towards a full remote brain monitoring platform, but we wanted to get something real into people's hands now. A first glimpse into your own brain, accessible to anyone with an Android smartphone (we are still working on the IOS release!!)
🎉 Product Hunt exclusive: we are offering a special discount during the first week of launch: A one month free trial! Grab it while it lasts.
How to use: Download the app, make an premium account trough settings and add the code FIRSTTAP for one month free!
Download the app and tell us what you think. What would you want to learn about your own brain most? We would love to hear your thoughts!