HabitStack vs SleepBlend AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HabitStack
Build a morning routine by stacking new habits onto existing anchors. This app guides you through your sequence step-by-step, with a forgiving streak system. Track your progress and see how automatic your routine becomes.
- Stack habits onto existing anchors
- Run morning routine as a guided flow
- Forgiving streak system with grace days
- Momentum Engine for habit automation scoring
- Streak calendar and consistency trends
- Optional Pro subscription for advanced features
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HabitStack helps you build a morning routine that actually sticks. Instead of tracking habits in isolation, you stack small new habits onto the anchors you already do — your first coffee, brushing your teeth — so the whole routine flows in order and nothing gets forgotten. STACK HABITS ONTO ANCHORS Start from something you already do every morning, then stack new habits before or after it. Reorder the stack, set a duration and reminder per step, and build a sequence that feels natural. RUN YOUR MORNING AS A FLOW The Morning Run walks you through the stack one step at a time, so you move through the routine instead of staring at a checklist. A FORGIVING STREAK Keep one streak for the whole routine — with a built-in grace day, skip, and freeze, because one missed morning shouldn't erase weeks of progress. SEE WHAT'S REALLY STICKING The Momentum Engine scores how automatic each routine is becoming and estimates when it could feel effortless — an estimate grounded in habit research, never a promise. Watch your streak calendar and consistency trends build over time. HABITSTACK PRO (optional subscription) The routine builder, morning run, streak, and calendar are free. Pro unlocks multiple routines, your complete history, per-habit consistency, best-time-of-day and weakest-link insights, and shareable weekly reports. - $4.99/month or $29.99/year, with a 7-day free trial - Payment is charged to your Apple ID at confirmation; auto-renews unless canceled at least 24 hours before the period ends; manage or cancel anytime in your App Store settings. Privacy Policy: https://preview.apppublishing.ai/legal/habit-stack/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/habit-stack/terms
SleepBlend AI
Create personalized soundscapes for sleep with a multi-layer mixer. Track your sleep quality and discover which sounds help you drift off faster. Enjoy a gentle fade-out timer and on-device processing for privacy.
- Customizable multi-layer sound mixer
- Real-time sound generation
- Gentle fade-out sleep timer
- On-device sleep quality check-in
- Personalized sound recommendations
- Sleep Mix Score tracking
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SleepBlend is a sound console for bedtime. Instead of scrolling a wall of tracks at midnight, you compose tonight's blend from a handful of voices — rain, ocean, wind, coloured noise, a warm drone — each generated on your device in real time, with its own volume and its own place in the stereo field. Nothing to download, and no loop that comes round again at 3am. COMPOSE YOUR OWN SOUNDSCAPE Stack voices in the multi-layer mixer and hear the blend change as you move each slider. The Resonance Ring shows the mix as bands of light around a still centre — when the voices sit in balance it settles into an even halo. A SLEEP TIMER THAT FADES, NEVER STOPS DEAD Set a timer with quick presets and a gentle fade-out over the last few minutes, so the night ends softly instead of cutting to silence. A blend keeps playing with the screen locked. ONE HONEST NUMBER Give a one-minute check-in in the morning — how quickly you drifted off, how rested you feel — and the Sleep Mix Score reflects how each blend works for you. It is built only from your own check-ins, shown with a transparent five-part breakdown, and it stays quiet until there is enough of your own data to be honest. Nothing is measured: no sensors, no wearables, no microphone. IT LEARNS WHICH VOICES SUIT YOU Over time the app surfaces which sounds turn up on the nights you settled faster, labelled as a pattern in your own logs — an association, not a cause. Tonight's recommendation is ranked from the same data. Every one of these calculations runs on your device, from your own entries. FREE, AND GENUINELY USEFUL The whole play loop is free: the full mixer with per-voice volume and stereo balance, the core voices, the sleep timer and gentle fade, the morning check-in, your Nights Composed streak, a nightly wind-down reminder and a 7-night rest trend. Free keeps up to three saved blends — and a blend you have saved is always free to replay, edit, favourite and delete. SLEEPBLEND PRO (optional subscription) - All 50 premium voices, and the starter mixes built on them - Unlimited saved blends, and deeper blends of up to eight voices - Adaptive recommendations with tweak suggestions - The full Sleep Mix Score breakdown, 90-night trends and sound associations - Per-voice Adaptive Volume Fade, and Gentle Wake - Monthly or yearly, with a 7-day free trial - Payment is charged to your Apple ID at confirmation; the subscription auto-renews unless cancelled at least 24 hours before the end of the period; manage or cancel it in Settings SleepBlend is a wellness and relaxation tool. It is not a medical device, not a sleep tracker, and not a treatment for insomnia or any sleep disorder. If sleep trouble persists, please talk to a licensed healthcare provider. Privacy Policy: https://preview.apppublishing.ai/legal/104/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/104/terms
Screenshots
Verdict
HabitStack and SleepBlend AI are too close to call on the numbers: across 9 compared parameters — price, rating, review sentiment and ratings volume among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HabitStack sells 2 in-app purchases, starting at $4.99 per month and SleepBlend AI sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for HabitStack against 5.0 for SleepBlend AI. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | HabitStack | SleepBlend AI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | JACQUELINE RAE BELLAMY | Christian Adrian Harvey-Michael |
Customer experience
HabitStack
SleepBlend AI
In-app purchases
HabitStack
- HabitStack Pro Monthly7 Days trial$4.991 Month
- HabitStack Pro Annual7 Days trial$29.991 Year
SleepBlend AI
- SleepBlend Pro Monthly7 Days trial$9.991 Month
- SleepBlend Pro Yearly7 Days trial$69.991 Year









