Comparison

Pockster StrongArm vs Red Light for Sleeping

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Measure steady hand control
  • Test against gravity
  • Track physiological state
  • Challenge friends and colleagues
  • Simple, intuitive gameplay
Features
Read full description

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!

About

Red Light for Sleeping

This app uses your device's OLED screen to emit deep red light, promoting better sleep by reducing harsh nighttime brightness. Customize brightness, tone, and set a sleep timer. It also offers white noise and relaxing sounds.

Highlights
  • Deep red OLED light emission
  • Customizable brightness and red tone
  • Sleep timer functionality
  • White noise and relaxing sounds
  • No user tracking or ads
  • No account required
Features
Read full description

Sleep better with deep red OLED light designed for nighttime comfort. • No user-tracking - no ads. • No account required. Using your iPhone’s built-in OLED display, the app produces red light in the ~620nm–670nm range to help reduce harsh nighttime brightness before sleep. Customise brightness, choose your preferred red tone, and set a sleep timer for a calmer nighttime experience. Play white noise and relaxing sounds in background to relax or focus. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Pockster StrongArm2 screens
Red Light for Sleeping4 screens

Verdict

The call

The clearest difference is review sentiment: Red Light for Sleeping at 100% against Pockster StrongArm's 0%. Red Light for Sleeping also leads on rating (5.0 vs 1.4) and update cadence (every 9 days vs every 108 months). Pockster StrongArm's advantage is in-app purchases (none vs 2). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Red Light for Sleeping sells 2 in-app purchases, starting at $1.99 per month. Pockster StrongArm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Red Light for Sleeping 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 Red Light for Sleeping's.

UpkeepUpdate frequency

Pockster StrongArm ships an update every 108 months, Red Light for Sleeping every 9 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

Scorecard5 real differences · 5 level
Pockster StrongArm versus Red Light for Sleeping: the parameters behind the verdict, then further details
ParameterPockster StrongArmRed Light for Sleeping
PriceFreeFree
Rating1.4 (5 ratings)5.0 (4 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings5 — better4
Update frequencyEvery 108 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size5 MB25 MB
Age rating4+4+
DeveloperGreg ChaffinsFaris Abaza

Customer experience

Pockster StrongArm

All ratings5 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

Red Light for Sleeping

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pockster StrongArm

No in-app purchases

2 purchases

Red Light for Sleeping

Subscriptions2
  • Premium Access$1.991 Month
  • Premium Access7 Days trial$12.991 Year

Questions

Is Pockster StrongArm free?
Pockster StrongArm is free to download, with no in-app purchases.
Is Red Light for Sleeping free?
Red Light for Sleeping is free to download, with in-app purchases available.
Which has better reviews, Pockster StrongArm or Red Light for Sleeping?
Red Light for Sleeping is rated higher. Pockster StrongArm averages 1.4 out of 5 from 5 ratings, while Red Light for Sleeping averages 5.0 from 4 ratings.
Do Pockster StrongArm or Red Light for Sleeping have ads?
Neither Pockster StrongArm nor Red Light for Sleeping shows ads.
Which is updated more often, Pockster StrongArm or Red Light for Sleeping?
Pockster StrongArm ships an update every 108 months, and Red Light for Sleeping every 9 days. Most recently, Pockster StrongArm was updated on October 31, 2026 and Red Light for Sleeping on November 1, 2026.

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