Pockster StrongArm vs Protocol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pockster StrongArm
Measure your physiological state by testing your fine motor control. Hold your iPhone steady with your arm outstretched for one minute to pass the challenge. The app tracks your ability to maintain stillness against gravity and fatigue.
- Measure steady hand control
- Test against gravity
- Track physiological state
- Challenge friends and colleagues
- Simple, intuitive gameplay
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Stress affects people on a very basic level. While for most casual activities the changes might not be as noticeable, it still contributes to the overall state of health. And if you are dependent on fine motor control (anybody make trips to the rifle range on a regular basis or play hard core video games?), you may find that simple stress can affect you more than you realize. Our nervous system and fine motor control state can be a good measure of our overall physiological state of being. It should not be surprising that our sense of control can vary each day depending on our health and outside influences. Now, thanks to the mechanical abilities of the iPhone, you can measure your current ability of steady control. The challenge is to simply hold your iPhone in your hand with your arm outstretched and steady. If you can do this easy sounding task for one minute, you pass the test. However, if your arm moves too much, the count starts over. And over. Once you raise your arm and have the phone in position, it will start announcing the count every five seconds. Until then, tones indicate that you do not yet have it level. Why level? Because that is the position that creates the greatest challenge with gravity. Sounds simple enough, but the iPhone senses slight movement that you may not be aware of making. After a few count resets, fatigue becomes a large factor in your success. Of course, there are some people who have a steady hand seemingly all the time, though few in number. If you are curious how you rank, one way to find out is to take the StongArm challenge. For an additional challenge, consider setting up a course to walk while trying to beat the clock. Simple movement adds another level of complexity to the process. You can also check out the state of your friends and colleagues Now, we do not condone the use of StrongArm to help win arguments, nor do we suggest use it to prove a point, but we are sure that you can find creative ways to use this capability. Thank you for looking at Pockster Strongarm!
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.
Screenshots
Verdict
The clearest difference is review sentiment: Protocol at 100% against Pockster StrongArm's 0%. Protocol also leads on rating (5.0 vs 1.4) and update cadence (every 2 months vs every 108 months). 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.
Protocol holds the better App Store score, 5.0 against 1.4. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 0% of Pockster StrongArm's written reviews are positive against 100% of Protocol's.
Pockster StrongArm ships an update every 108 months, Protocol every 2 months. The most recent releases landed on October 12, 2026 and September 28, 2026 respectively.
| Parameter | Pockster StrongArm | Protocol |
|---|---|---|
| Price | Free | Free |
| Rating | 1.4 (5 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 4 |
| Update frequency | Every 108 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Chaffins | hsla0001 |
Customer experience
Pockster StrongArm
Protocol
In-app purchases
Pockster StrongArm
No in-app purchases
Protocol
No in-app purchases









