u/LiftAlert

Shipped an App that enables your iPhone and Apple Watch to vibrate in sync to music about a week ago. Haven’t got any paid users yet, not even free trial. Need feedback on my paywall, trying to understand whether jt is convincing enough.

A bit more details on my App: I preprocess the music to separate and drum and bass beats and utilizes haptic feedback to make the device vibrate in sync to music, aiming to provide user with a sensation fused music experience (visual and haptic). The tactic engine on iPhone can provide some pretty nuanced vibration, it actually feels pretty awesome in hand. For the Apple Watch the tactic engine can only provide some short pulse click, so I only enabled kick drum. Paired with visual effect. The sync with the beat experience is pretty addictive, at least for me.

I think right now the biggest drawback is my music library, it currently supports 100 songs and I will keep working on expanding the library. Is it too small to convince user to pay? But I need a good user base to convince myself to keep investing effort.

I will stop ranting now and would love to get some feedback

Need some advice on subscription strategy. Currently I have two plans: monthly for 2.99 and yearly for 14.99 with 3 day free trial.

Seems that no user even attempted free trial (the in app purchase should be coming from the promo code I distributed). Should I add free trial period to monthly subscription as well? Or is the app simply not worth paying for?

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

Would appreciate any honest feedback!

I’ve always believed that if melody and chords are the "skin" of a song, then the drums and bass are its "skeleton." Most of us only focus on the surface, but we miss the structural beauty underneath. When you can actually *feel* the drums and bass through haptics, the experience hits differently. Sensory-fused listening is the ultimate way to go.

That’s why I developed **VibeSync** for iOS & Apple Watch. It’s a music companion (optimized for Apple Music) that extracts the **Drums** and **Bass** from the track and translates them into precise haptic feedback. By utilizing the iPhone’s advanced Taptic Engine alongside the Apple Watch, the rhythm is no longer just heard—it’s physically felt on your wrist and in your hand.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

With visual beat-matching UI, it feels less like just "listening" and more like playing *Taiko no Tatsujin* or *Beat Saber*. iPhone’s haptics are incredibly nuanced; they are the perfect medium for musical expression. Use your touch and sight to rediscover the "bones" of your favorite tracks.

With Apple Watch, you can even feel the beat bouncing on your wrist while working out!

The app needs to be used together with Apple Music and right now supports 90+ songs (I will keep expanding the library).

I would really appreciate your honest feedback and let me know if it makes sense

I’ve always believed that if melody and chords are the "skin" of a song, then the drums and bass are its "skeleton." Most of us only focus on the surface, but we miss the structural beauty underneath. When you can actually *feel* the drums and bass through haptics, the experience hits differently. Sensory-fused listening is the ultimate way to go.

That’s why I developed **VibeSync** for iOS & Apple Watch. It’s a music companion (optimized for Apple Music) that extracts the **Drums** and **Bass** from the track and translates them into precise haptic feedback. By utilizing the iPhone’s advanced Taptic Engine alongside the Apple Watch, the rhythm is no longer just heard—it’s physically felt on your wrist and in your hand.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

With visual beat-matching UI, it feels less like just "listening" and more like playing *Taiko no Tatsujin* or *Beat Saber*. iPhone’s haptics are incredibly nuanced; they are the perfect medium for musical expression. Use your touch and sight to rediscover the "bones" of your favorite tracks.

With Apple Watch, you can even feel the beat bouncing on your wrist while working out!

The app needs to be used together with Apple Music and right now supports 90+ songs (I will keep expanding the library).

I would really appreciate your honest feedback and let me know if it makes sense

I’ve always believed that if melody and chords are the "skin" of a song, then the drums and bass are its "skeleton." Most of us only focus on the surface, but we miss the structural beauty underneath. When you can actually *feel* the drums and bass through haptics, the experience hits differently. Sensory-fused listening is the ultimate way to go.

That’s why I developed **VibeSync** for iOS & Apple Watch. It’s a music companion (optimized for Apple Music) that extracts the **Drums** and **Bass** from the track and translates them into precise haptic feedback. By utilizing the iPhone’s advanced Taptic Engine alongside the Apple Watch, the rhythm is no longer just heard—it’s physically felt on your wrist and in your hand.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

With visual beat-matching UI, it feels less like just "listening" and more like playing *Taiko no Tatsujin* or *Beat Saber*. iPhone’s haptics are incredibly nuanced; they are the perfect medium for musical expression. Use your touch and sight to rediscover the "bones" of your favorite tracks.

With Apple Watch, you can even feel the beat bouncing on your wrist while working out!

The app needs to be used together with Apple Music and right now supports 90+ songs (I will keep expanding the library).

I would really appreciate your honest feedback and let me know if it makes sense

I’ve always believed that if melody and chords are the "skin" of a song, then the drums and bass are its "skeleton." Most of us only focus on the surface, but we miss the structural beauty underneath. When you can actually *feel* the drums and bass through haptics, the experience hits differently. Sensory-fused listening is the ultimate way to go.

That’s why I developed **VibeSync** for iOS & Apple Watch. It’s a music companion (optimized for Apple Music) that extracts the **Drums** and **Bass** from the track and translates them into precise haptic feedback. By utilizing the iPhone’s advanced Taptic Engine alongside the Apple Watch, the rhythm is no longer just heard—it’s physically felt on your wrist and in your hand.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

With visual beat-matching UI, it feels less like just "listening" and more like playing *Taiko no Tatsujin* or *Beat Saber*. iPhone’s haptics are incredibly nuanced; they are the perfect medium for musical expression. Use your touch and sight to rediscover the "bones" of your favorite tracks.

With Apple Watch, you can even feel the beat bouncing on your wrist while working out!

The app needs to be used together with Apple Music and right now supports 85+ songs (I will keep expanding the library).

I would really appreciate your honest feedback and let me know if it makes sense

Just shopped my second app last week and the numbers just look miserable. I made an app that syncs with Apple Music and provides haptic feedback on iPhone and Apple Watch, aiming to provide a fused sensation experience while you enjoying your music. Thought it would be a fun thing for music enthusiasts but it’s getting nowhere. Appreciate any honest feedback or suggestions. Please feel free to roast the idea.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

I’ve always believed that if melody and chords are the "skin" of a song, then the drums and bass are its "skeleton." Most of us only focus on the surface, but we miss the structural beauty underneath. When you can actually feel the drums and bass through haptics, the experience hits differently. Sensory-fused listening is the ultimate way to go.

That’s why I developed VibeSync for iOS & Apple Watch. It’s a music companion (optimized for Apple Music) that extracts the Drums and Bass from the track and translates them into precise haptic feedback. By utilizing the iPhone’s advanced Taptic Engine alongside the Apple Watch, the rhythm is no longer just heard—it’s physically felt on your wrist and in your hand.

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

With visual beat-matching UI, it feels less like just "listening" and more like playing Taiko no Tatsujin or Beat Saber. iPhone’s haptics are incredibly nuanced; they are the perfect medium for musical expression. Use your touch and sight to rediscover the "bones" of your favorite tracks.

With Apple Watch, you can even feel the beat bouncing on your wrist while working out!

The app needs to be used together with Apple Music and right now supports 85+ songs (I will keep expanding the library).

I would really appreciate your honest feedback and let me know if it makes sense.

Struggled with Apple review for the past two weeks. Spent most of the time “waiting for review”. Most of the time it took a day or two to get reviewed.

I did notice that it usually took longer if I submit during PST evening time, and usually it took shorter to get reviewed if the app was submitted in early morning pst time.

Although Apple run a 24/7 review, but your app apparently could be reviewed by different teams depends on when it gets reviewed. So maybe it does make a different when you submit your app for review.

Finally after two weeks of back and forth the app is approved!

https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

Did you guys notice same thing ?

I’ve always felt that the iPhone and Apple Watch Taptic Engine is one of its most underrated features. It’s so precise, yet we mostly just use it for notifications.

I wanted something different: I wanted to feel the music. Not just hear it, but have the beat physically pulse on my wrist/palm while I'm walking, commuting, or just focusing. I couldn't find an app that did this reliably in the background, so I spent the last few months building VibeSync.

It was a nightmare to get through App Store review. Apple’s background restrictions are brutal. I had to refactor the entire app to work with HealthKit and Workout sessions just so the haptics wouldn't cut out when your wrist drops or the screen goes black. It was a long battle of "App Rejected," but it's finally live.

What it does: It syncs with your music and translates the rhythm into real-time haptic patterns. It’s not meant to replace your headphones, obviously—it’s an "extension" of the sensory experience.
Some transparency:

Compatibility: it only works with Apple Music (due to API constraint) for now

Battery: Since it uses the Taptic Engine and a background Workout session(on Apple Watch), it will use more battery, similar to running a workout app.

Privacy: It asks for Health permissions on Apple Watch (Heart Rate/Workout) because that’s the only legitimate way Apple allows high-frequency haptics in the background. Your data stays on your device.

I'm a solo dev and would love to hear what you guys think. If you’re a "rhythm nerd" or someone who just loves haptic feedback, I’d love for you to try it out. https://apps.apple.com/us/app/vibesync-haptic-rhythm/id6763841573

I have a few promo codes for the premium tier if anyone wants to deep-dive and give me some feedback—just drop a comment!

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