Grass vs Razer Chroma RGB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grass
This app simulates a field of grass that reacts to your breath, touch, and device orientation. It offers guided breathing exercises and allows for creative interaction with a dynamic, responsive meadow.
- Guided breathing exercises with visual pacer
- Breath-reactive wind simulation via microphone
- Compass-based orientation for realistic wind direction
- Finger-based combing and drawing on grass blades
- Optional voice recording while interacting
- Multiple visual scenes and customization options
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A field of grass that breathes with you. Breathe with it. Tap BREATHE and a pacer leads you through a slow breath — in, hold, out — and the whole field follows. The grass draws in toward you as you inhale and a gust rolls away from you as you exhale, so you pace your breath by watching a meadow instead of a shrinking circle. Three patterns: a long-exhale 4·6 for settling, box breathing, and 4·7·8 for sleep. Blow on the OUT to push the gust harder. The app keeps a quiet count of your sessions and breaths — no streaks, no reminders. Blow on it. Grass listens to the microphone — but only for breath. It knows the low rush of air on the mic from a voice or a song, so talking, music, and a noisy room leave the field still; a breath rolls a gust up through it. Blow hard and it flattens; stop and it settles back. Breath is measured in the moment and thrown away — not recorded. Turn it. The wind comes from north. Real north — Grass reads your compass, so the field is oriented to the room you're standing in. Turn slowly and the blades swing to keep leaning away from magnetic north. Turn all the way round and the whole field lies down the other way. Comb it. Blades bend away from your finger and stay bent, and the field remembers every path you've traced through it. Use several fingers at once; each one combs its own way. Talk to it. Turn on RECORD WHILE COMBING in the menu and the field becomes a voice recorder: Grass records while a finger is combing the grass, up to thirty seconds a stroke, and stops the moment you lift. Notes stay on your phone — in Files, under Grass — and you can share or delete them from the menu. Off by default. Fold it. On iPhone Duo the field spans the whole inner display and survives every fold and unfold — nothing re-plants, your combing stays. Half-shut the phone and flap it: the hinge fans a gust across the grass. Cards and the pacer step clear of the crease. Make it yours. Four scenes — a midsummer meadow, a dry straw field, a moonlit night, a first frost. A wind slider from dead calm to blustery. A breath sensitivity control. The pacer pattern. All behind a single quiet MENU. It moves in layers, not sheets. Long blades are a longer lever with more sail area, so they catch far more of a gust than short ones. The tall stuff lies over while the low stuff only stirs — the same reason a real field ripples instead of tilting all at once. Tens of thousands of blades, each one simulated individually, on the GPU. Between your breaths the natural wind is barely there — a field at rest, waiting for you. No score. No streak. Nothing to finish, nothing to miss. Grass makes no network connection of any kind, has no account, and collects nothing. Microphone and compass readings, and any voice notes, never leave your device.
Razer Chroma RGB
Control and personalize your Razer Chroma RGB lighting ecosystem with millions of colors and unique effects. Connect to supported devices for responsive lighting that adapts to your settings and notifications, creating an immersive experience.
- Personalize lighting with 16.8 million colors
- Choose from unique lighting effects
- Connect to Chroma-enabled devices
- Easy control and customization
- Responsive lighting behavior
- Lighting adapts to device settings/notifications
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Hold the world of Razer Chroma™ RGB in the palm of your hand. LIMITLESS POSSIBILITIES Personalize your lighting ecosystem to your heart’s content with 16.8 million colors and a suite of unique lighting effects to choose from. CONVENIENT CONTROL Instantly connect to your Chroma-enabled devices for easy control and customization. RESPONSIVE LIGHTING BEHAVIOR Set your preferences and experience Chroma lighting that automatically adapts to the settings and notifications on your devices. SUPPORTED DEVICES Razer Chroma Wireless ARGB Controller Razer Head Cushion Create a truly immersive and personalized lighting ecosystem – find out more about Razer Chroma™ RGB at https://www.razer.com/chroma
Screenshots
Verdict
The clearest difference is review sentiment: Grass at 100% against Razer Chroma RGB's 24%. Grass also leads on rating (3.7 vs 3.5) and update cadence (monthly vs every 2 months). Razer Chroma RGB's advantage is iOS requirement (14.0 vs 16.0). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Grass holds the better App Store score, 3.7 against 3.5. Both are backed by a comparable volume of ratings — 203 and 295 respectively. Written reviews point the same way: 100% of Grass's written reviews are positive against 24% of Razer Chroma RGB's.
Grass ships an update monthly, Razer Chroma RGB every 2 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.
| Parameter | Grass | Razer Chroma RGB |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (203 ratings) — better | 3.5 (295 ratings) |
| Positive reviews | 100.0% of reviews — better | 24.4% of reviews |
| Number of ratings | 203 | 295 — better |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 207 MB |
| Age rating | 4+ | 4+ |
| Developer | CW&T | Razer |
Customer experience
Grass
Razer Chroma RGB
Bugs and requests
Grass
Not enough reviews yet to summarise bugs or requests.
Razer Chroma RGB
Reported bugs
3 issues- Headset not recognized by app
- Pairing/connection issues
- Frequent crashes or freezes
Requested features
3 requests- Add support for more Razer devices
- Ability to control keyboard/mouse lighting
- More color customization options
In-app purchases
Grass
No in-app purchases
Razer Chroma RGB
No in-app purchases









