SensoryStone vs Undulate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SensoryStone
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Sensory Stone is a sensory stone app that helps with relaxation and focus through immersive 3D visualization and customizable haptic feedback. KEY FEATURES: Realistic 3D sensory stone models (Deep Dream, Forest Path, Mountain Peak, Light Breeze, Ripple, Mist) with interactive touch controls 13+ customizable haptic patterns with distinct, story-like rhythms (Flow, Breathe, Forest Path, Mountain Still, Journey, Sparkle, and more) Add a second, third, or fourth stone: drag and release for magnetic snap with collision sound (volume follows your device volume keys) Multiple color themes and personalization (subscription) Per-stone haptic customization with longer previews so you can feel full patterns before choosing Multi-language support (English / Chinese) Smooth, responsive 3D rendering with SceneKit PERFECT FOR: Relaxation and stress relief Focus and concentration support Meditation and mindfulness practice Sensory stimulation and regulation ADHD users and anyone seeking a calming, tactile experience HOW IT WORKS: Touch and interact with 3D stones on your screen. Each stone responds with unique haptic feedback that you can customize. Try story-driven patterns like Deep Breath, Forest Path, or Mountain Still, or lighter rhythms like Flow and Journey. Add more stones and feel them snap together with satisfying haptics and sound. After a free trial, subscription unlocks additional stones, all themes, and more haptic patterns. Whether you need a moment of calm, help focusing, or gentle sensory input, Sensory Stone offers an accessible, intuitive way to relax through touch and interaction. Download now and discover the power of sensory interaction for relaxation and focus. Terms of Use (EULA): https://delightful-tartufo-d098f9.netlify.app/terms.html
Undulate
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Your next panic attack won't wait for you to find your meditation app. But your breath? That's always with you. Undulate turns your phone into a breathing coach that actually works — 5 modes, haptic guidance, 60 seconds to calm. No account. No subscription. Ever. 60 SECONDS. REAL TECHNIQUES. These aren't random animations. Every mode is built on a real breathing technique used by doctors, military, and therapists: - Paper Plane — Box breathing. The technique Navy SEALs use to stay calm under fire. Balanced 4-4-4 rhythm that stabilizes your mind when pressure hits. - Whale — 4-7-8 breathing, developed by Dr. Andrew Weil. Activates your vagus nerve and drops your heart rate in under a minute. - Dandelion — Extended exhale for winding down. Shifts your nervous system from fight-or-flight to rest-and-digest. - Shredder — Fast-paced release breathing for when you're angry, overwhelmed, or about to lose it. - French Press — Slow morning breathing ritual. Better than coffee for waking up your brain. FEELS LIKE NOTHING ELSE Haptic feedback pulses with every inhale and exhale — your phone literally breathes with you. No screen-watching required. Just feel the rhythm and follow it. Every session is tracked. Streaks, minutes, modes — see the proof that you're building a real habit. PAY ONCE. KEEP FOREVER. Two modes are free. Unlock everything with a single purchase. No subscription. No renewal. No "we'll charge you when you forget." You pay once, you own it. We don't collect your data. We don't have accounts. We don't know who you are and we don't want to. Start now.
Screenshots
Verdict
The clearest difference is update cadence: Undulate at every 9 days against SensoryStone's monthly. SensoryStone's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
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. SensoryStone sells 1 in-app purchase, starting at $5.99 per year and Undulate sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SensoryStone ships an update monthly, Undulate every 9 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | SensoryStone | Undulate |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.5 — better | 16.0 |
| Further details — not scored | ||
| Size | 10 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | 阳 赵 | Abhishek Gawde |
In-app purchases
SensoryStone
- Premium Subscription3 Days trial$5.991 Year
Undulate
- Undulate Premium$3.99









