Protocol vs Chisel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protocol
This app generates refined ambient noise with a unique tactile and visual experience. It offers precise control over sound frequencies and features an elegant particle system that responds to touch, designed for focus, calm, and sleep.
- Ambient noise generation
- Touch-responsive particle system
- Precise frequency control
- Haptic feedback
- Background playback
- Media controls integration
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Protocol is a meticulously crafted ambient noise generator for those who appreciate refined design and sonic precision. Unlike typical white noise apps, Protocol delivers a unique tactile experience through an elegant particle system that responds to your touch. Key Features: - Sophisticated sound palette: Pure white noise, pink noise, and brown noise - seamlessly blended through intuitive touch control - Elegant particle visualization: Minimalist aesthetics with responsive particles that flow and spiral with your movements - Precise frequency control: Fine-tune the sonic character by simply moving your finger across the screen - Haptic feedback: Subtle vibrations provide sensory confirmation when crossing sound thresholds - Remembers your settings: Automatically restores your preferred sound settings between sessions - Works in background: Continue playback while using other apps or when your device is locked - Media controls integration: Control playback from your lock screen or headphones Designed for: - Deep focus during creative work - Meditation and mindfulness sessions - Masking distracting environmental sounds - Creating a calming atmosphere for sleep - Establishing a consistent audio environment for productivity Protocol is created for people who value both function and form. For those who understand that the tools we use should be as thoughtfully designed as they are effective. Download Protocol and experience sound as a system.
Chisel
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A simple workout log. A clearer picture of your training. Chisel helps you record your sets, see what you lifted last time, and understand which muscles you've trained. Built for people who choose their own workouts and want an easy way to follow their progress. LOG YOUR LIFTS Record weight and reps, bodyweight exercises, and timed movements. Choose pounds or kilograms, adjust your sets, and keep an optional rest timer close at hand. Recent sessions are right there when you need a reference for your next set. SEE YOUR MUSCLE HISTORY Explore a front and back muscle map showing your training history. Primary work gets full color and secondary work a lighter tint, both fading over seven days. After you've logged primary work for more than five distinct muscle groups, Chisel suggests the group whose primary training was longest ago. BUILD YOUR OWN WORKOUT Choose from 150 illustrated exercises or create your own. Plan around muscle groups, arrange your exercises, and set your targets. Repeat a past workout as an editable plan or add an exercise while you train. FOLLOW YOUR STRENGTH PROGRESS Review individual exercise trends and your Strength Index, a summary of changes in logged performance and volume. See your completed sets by muscle group to understand how your training is distributed over time. KEEP A USEFUL WORKOUT JOURNAL Look back through completed sessions, correct a set, and pick up an unfinished workout. Your workout history stays on your device, with no account required. Your training, made visible. Muscle colors summarize primary and secondary training recency, not measured activation or recovery. Chisel records and summarizes your workouts; it does not prescribe a training program.
Screenshots
Verdict
The clearest difference is update cadence: Chisel at weekly against Protocol's every 2 months. Protocol's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support 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.
Protocol ships an update every 2 months, Chisel weekly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.
| Parameter | Protocol | Chisel |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | hsla0001 | Pouria Assadipour |
In-app purchases
Protocol
No in-app purchases
Chisel
No in-app purchases









