https://preview.redd.it/hpqy22ycm8th1.png?width=1080&format=png&auto=webp&s=0527d39dff3ccb2030f3358a1a1c6c55e6af02b9

Hey Reddit!

I'm the developer of Fillomino: Number Logic Puzzle, and I’ve decided to make it completely free for the next few days!

If you love logic games like Sudoku or Kakuro, you'll feel right at home with Fillomino. I designed this app with a "zero friction" philosophy in mind.

👉 Download it here on the App Store: https://apps.apple.com/pl/app/everyday-puzzles-fillomino/id6758634297

🧩 Key Features:

• 100% Offline Play: No internet connection required. Perfect for flights, commutes, or areas with poor reception.
• On-Device Puzzle Generation: The puzzles are generated directly on your device, meaning you have an infinite supply of unique challenges.
• Privacy First: Absolutely zero tracking, zero data collection, and no annoying ads. Just pure gameplay.
• Game Center Integration: Full support for achievements and leaderboards to track your logic skills against others.

As an indie developer, visibility is the hardest part. If you download the game and enjoy it, I would immensely appreciate it if you could upvote this post and leave a quick review on the App Store. It helps more than you know!

Enjoy the puzzles, and let me know if you have any feedback or suggestions!

https://preview.redd.it/jy3jsccdazkh1.png?width=2224&format=png&auto=webp&s=5ef547f2408b3d7a1fcbd07d629f50facb8038c9

Hi everyone! 👋

I'm excited to run a promo code giveaway for my app: Unwind: 10-Min Stress Reset .

Unwind uses an offline generative noise engine designed specifically for quick 10-minute relaxation sessions during workday, anxiety reduction, and mental resets.

📋 Giveaway Details & Rules Compliance:

• Product Name: Unwind: 10-Min Stress Reset
• Platform: iOS & iPadOS & AppleWatch
• Normal Price: $9.99
• Deal Duration: Lifetime Access (per redeemed code)
• Limits: Limited quantity of promo codes (available while supplies last)
• Expiration Date: August 31th (Codes must be redeemed by August 31th)
• Feedback Required: Optional, but feedback and suggestions are highly appreciated!
• Link to the App: Unwind on the App Store

🌟 Key Features:

• Generative Sound Engine: Infinite, real-time procedural audio without annoying loops or repeat patterns.
• Brown & Black Noise Presets: Deep, steady soundscapes specifically tuned to quiet racing thoughts and cut through mental clutter.
• 4 Focused Reset Modes:
  • Reset: Steady sound to clear your head and restart your day.
  • Relax: Softer audio for releasing everyday physical and mental tension.
  • Calm: Grounding sound for quiet, settled moments.
  • Relief: Deeper sound crafted for severe overstimulation and sensory overload.
• Zero Talking or Voiceovers: No guided voices, intrusive speakers, or rigid routines—just pure audio.
• One-Tap & Distraction-Free: Open the app and start decompressing instantly during work breaks, after commutes, or before sleep.
• 100% Offline & Private: No accounts, no audio streaming, and zero data collected—everything runs on-device.

🎁 How to Claim Your FREE Lifetime Code:

1. Upvote this post (helps more people find the giveaway).
2. Send me a Private Message (DM) containing only the word: unwind

I will send you a lifetime promo code via DM as soon as I see your message!

Note: Please make sure to redeem your code before August 31th*.*

Thank you for checking it out, and I hope Unwind helps you find a moment of calm today! 🧘‍♂️✨

https://preview.redd.it/0fa7cxgz6zkh1.png?width=596&format=png&auto=webp&s=1763b8ea18c3d40e297a28025fd0886fc7def4eb

Hi Reddit,

I wanted to share a project born out of a real family need.

It started with my son. He is homeschooled and has ADHD, which makes it incredibly hard for him to focus with all the usual household noise and siblings running around. We tried various white noise apps, but they all had the same issue: the sound felt like it was "inside his head," and after longer sessions, it actually gave him a headache.

I decided to look into some scientific papers on acoustics and cognitive focus. I realized two things:

1. Sound localization matters: The sound needed to feel like it was outside the user, surrounding them naturally, rather than pumping directly into the eardrums.
2. Modulation prevents fatigue: Some studies suggested that mixing different types of noise and subtly modulating them (putting the sound in motion) helps the brain stay stimulated without getting tired.

So, I started coding. That’s how dpli was born.

Instead of using heavy, repeating audio files (which your brain eventually recognizes and gets annoyed by), everything in the app is generated mathematically in real-time. Because of this, the entire app size is only around 10MB, and the sounds never loop.

I built several presets based on this moving/modulated noise approach. It completely changed things for my son—it perfectly cuts out the background chatter and helps him lock in. Honestly, it worked so well that I started using it myself when I returned to the office and needed to block out the open-space chaos.

The app is available for iOS and macOS here: https://apps.apple.com/pl/app/focus-friend-noise-app-dpli/id6760627418

I’m an indie dev and I really want to make this as helpful as possible. I would absolutely love to hear your thoughts.

Thanks for reading and for any feedback you can give!

I came across this while researching how background sound affects concentration (for my focus noise app). I think it might be interesting for you.

A steady fan can be fairly loud but still fade into the background. Meanwhile, a quiet conversation across the room—or a chair scraping the floor—can pull you out of your work almost instantly.

That’s because distraction is not just about volume.

Speech is especially distracting because it keeps changing: different words, voices, pauses, and rhythms. Even when you are not trying to listen, your brain can still process those changes, making it harder to hold information in working memory.

Researchers call this the irrelevant-sound effect. In one study, people had to remember digit sequences while ignoring background speech. Their memory got worse when the speech was more detailed and easier to understand.

But speech is not the only issue. We also react automatically to sounds that stand out from the recent background. A child shouting, a phone notification, a chair scraping, a door closing, or a sudden burst of keyboard typing can grab your attention before you consciously decide whether it matters.

Your brain is constantly checking: “Was that important?”

Repetitive sounds can become predictable and easier to ignore. But when the pattern changes, your attention may be pulled back again.

This may be why stable sounds like a fan, rain, or continuous noise can fade away, while conversations and random office noises keep coming back into awareness.

A few practical takeaways:

• Reduce intelligible speech when reading, writing, or doing memory-heavy work.
• Continuous background sound is often easier to ignore than intermittent noise.
• Broadband noise can mask a wider range of sounds and make sudden noises feel less noticeable.
• The goal is not to drown everything out. It is simply to make distracting sounds less distinct and conversations harder to understand.
• Music with lyrics may not be ideal for language-heavy tasks.

A sound does not have to be loud to distract you—it just has to feel different from what came before.

I came across this while researching how background sound affects concentration (for my focus noise app). I think it might be interesting for you.

A steady fan can be fairly loud but still fade into the background. Meanwhile, a quiet conversation across the room—or a chair scraping the floor—can pull you out of your work almost instantly.

That’s because distraction is not just about volume.

Speech is especially distracting because it keeps changing: different words, voices, pauses, and rhythms. Even when you are not trying to listen, your brain can still process those changes, making it harder to hold information in working memory.

Researchers call this the irrelevant-sound effect. In one study, people had to remember digit sequences while ignoring background speech. Their memory got worse when the speech was more detailed and easier to understand.

But speech is not the only issue. We also react automatically to sounds that stand out from the recent background. A child shouting, a phone notification, a chair scraping, a door closing, or a sudden burst of keyboard typing can grab your attention before you consciously decide whether it matters.

Your brain is constantly checking: “Was that important?”

Repetitive sounds can become predictable and easier to ignore. But when the pattern changes, your attention may be pulled back again.

This may be why stable sounds like a fan, rain, or continuous noise can fade away, while conversations and random office noises keep coming back into awareness.

A few practical takeaways:

• Reduce intelligible speech when reading, writing, or doing memory-heavy work.
• Continuous background sound is often easier to ignore than intermittent noise.
• Broadband noise can mask a wider range of sounds and make sudden noises feel less noticeable.
• The goal is not to drown everything out. It is simply to make distracting sounds less distinct and conversations harder to understand.
• Music with lyrics may not be ideal for language-heavy tasks.

A sound does not have to be loud to distract you—it just has to feel different from what came before.

I wanted to share this because it seems surprisingly relevant to productivity. I came across it while researching sound perception for an app I’m working on and while experimenting with a generative noise engine.

Some people start hearing faint music, voices or rhythms after listening to white noise for a while. This phenomenon actually has a scientific name: auditory pareidolia. It’s the auditory equivalent of seeing faces in clouds.

The brain doesn’t passively record sound. It constantly predicts what it’s about to hear and compares those predictions with incoming information. When a sound is ambiguous and uniform, like broadband noise, the brain may start filling in the gaps and projecting familiar patterns onto it.

Fatigue can make this more noticeable because tiredness reduces the precision of sensory processing. Expectations matter too: once you start actively listening for a melody or voice, you may become more likely to perceive one.

Another interesting productivity-related detail is that short noise recordings played on a loop may eventually stop working as background sound. Even subtle repetitions give the brain something to learn and predict. Once it detects the pattern, attention can shift toward the noise instead of ignoring it.

A few practical takeaways:

• Keep the volume only high enough to mask distractions.
• Avoid short or clearly repeating loops.
• Change the sound when you begin actively noticing it.
• Don’t raise the volume to cover up perceived music or voices.
• Continuously generated noise with small variations may be less distracting than a static recording.

The ideal focus sound seems to sit somewhere between predictable and distracting: complex enough that the brain can’t easily model it, but simple enough that it doesn’t demand attention.

https://preview.redd.it/mud1v3i6xkgh1.png?width=2610&format=png&auto=webp&s=a093149f4cad594c7a9c22705ea5c231f577d891

Hi everyone! 👋

I'm excited to run a promo code giveaway for my app: Unwind: 10 Min Stress Relief.

Unwind uses an offline generative noise engine designed specifically for quick 10-minute relaxation sessions, anxiety reduction, and mental resets.

📋 Giveaway Details & Rules Compliance:

• Product Name: Unwind: 10 Min Stress Relief
• Platform: iOS & iPadOS
• Normal Price: $24.99
• Deal Duration: Lifetime Access (per redeemed code)
• Limits: Limited quantity of promo codes (available while supplies last)
• Expiration Date: August 7th (Codes must be redeemed by August 7th)
• Feedback Required: Optional, but feedback and suggestions are highly appreciated!
• Link to the App: Unwind on the App Store

🌟 Key Features:

• Generative Sound Engine: Infinite, real-time procedural audio without annoying loops or repeat patterns.
• Brown & Black Noise Presets: Deep, steady soundscapes specifically tuned to quiet racing thoughts and cut through mental clutter.
• 4 Focused Reset Modes:
  • Reset: Steady sound to clear your head and restart your day.
  • Relax: Softer audio for releasing everyday physical and mental tension.
  • Calm: Grounding sound for quiet, settled moments.
  • Relief: Deeper sound crafted for severe overstimulation and sensory overload.
• Zero Talking or Voiceovers: No guided voices, intrusive speakers, or rigid routines—just pure audio.
• One-Tap & Distraction-Free: Open the app and start decompressing instantly during work breaks, after commutes, or before sleep.
• 100% Offline & Private: No accounts, no audio streaming, and zero data collected—everything runs on-device.

🎁 How to Claim Your FREE Lifetime Code:

1. Upvote this post (helps more people find the giveaway).
2. Send me a Private Message (DM) containing only the word: unwind

I will send you a lifetime promo code via DM as soon as I see your message!

Note: Please make sure to redeem your code before August 7th*.*

Thank you for checking it out, and I hope Unwind helps you find a moment of calm today! 🧘‍♂️✨

https://preview.redd.it/st439v0tos9h1.png?width=2542&format=png&auto=webp&s=e152d3f413133ca411d2b32d9ced8602750df729

Hey Reddit!

I'm the developer of dpli, a focus noise instrument engineered specifically for restless, neurodivergent minds.

The Backstory: I built this app for my ADHD son who is homeschooled. Traditional noise apps worked for him initially, but standard, looping MP3 files gave him severe headaches during long study sessions.

After diving deep into scientific research, I built dpli to solve this.

👉 App Store Link: https://apps.apple.com/pl/app/adhd-focus-noise-app-dpli/id6760627418

🧠 Why dpli is different:

• Zero Loops, Zero MP3s: Every soundwave is mathematically synthesized in real-time directly on your device. The sound never repeats, meaning your ADHD brain has nothing to latch onto, completely preventing neural adaptation.
• Spatial Shielding (HRTF): Sounds are carefully modulated and placed in a 3D space around you. This externalizes the sound, creating an immersive acoustic barrier that cuts off distractions without tiring your brain and prevent headaches and discomfort.
• Tailored Presets for Any Occasion: Features unique presets (like SHIELD or FLOW) that blend different noise colors with dynamic spatial movements. This creates a fully immersive audio scene designed to completely seal you off from your environment and lock in your focus.
• Tuned Noise Colors: Includes Brown noise (the ADHD gold standard), Pink, White.
• 100% Offline & Privacy-First: No tracking, no data collection, no accounts. Runs natively and efficiently across iPhone, Mac, and Apple Watch.

🎁 How to get Lifetime Access for FREE (Offer valid until July 5th):

1. Upvote this post.
2. Leave a comment "DPLI" below letting me know you want access.

I will personally DM a lifetime promo code to everyone who replies!

Promotion codes are valid until August 3th.

As an indie dad-developer, all I ask in return is that if dpli helps you lock into hyperfocus, please leave a quick review on the App Store*. It means the world to us!*

Hey Reddit,
I built two apps that are 100% offline and privacy-first.

I want to ask my users a few questions (like a survey or feedback form) to know how they use the app and what features they want.

Since the apps are offline and privacy-focused, standard Google Forms or Typeform embeds are out of the question.

My questions:

1. What are the best privacy-respecting, open-source, or self-hosted tools to collect user answers?
2. How do you handle this in offline apps? (e.g., filling out a form locally and letting the user manually export/email the answers, or opening a privacy-friendly link only when they click "Give Feedback"?).

Thanks for any suggestions!

https://preview.redd.it/5ois7fagkfch1.png?width=2564&format=png&auto=webp&s=134134a661429f1b430b8fc3a353b7738a41bc3b

Hey Reddit!

I’m the indie developer behind Unwind, a simple noise-based app designed for those moments when stress builds up, your mind feels overloaded, or you just need a quiet break from the day.

The idea behind Unwind:

A lot of relaxation apps require long routines, guided meditation, breathing instructions, or someone talking in your headphones.

Sometimes, I don’t want another voice telling me what to do.

I just want to press one button, put on my headphones, close my eyes, and take a short break.

That’s why I built Unwind: a simple 10-minute reset using calming brown and black noise.

App Store:
https://apps.apple.com/us/app/unwind-10-min-stress-relief/id6775212743

Why Unwind is different:

• Only 10 Minutes: Designed for short resets during a busy day — no long sessions or complicated routines.
• No Talking or Guided Meditation: No voices, instructions, stories, or distractions. Just steady, calming sound.
• Four Simple Presets: Choose between Reset, Relax, Calm, and Relief depending on how you feel in the moment.
• Brown & Black Noise Blends: Deep, gentle noise designed to help mask distracting sounds and create a quieter mental space.
• One-Tap Experience: Open the app, select a preset, and start your break. Nothing else to configure.
• Made for Everyday Stress: Useful during work breaks, stressful commutes, screen fatigue, overstimulation, racing thoughts, or whenever you need a moment to yourself.
• Privacy-First: No accounts, no tracking, and no personal data collected.

How to get your first year for FREE:

1. Upvote this post.
2. Leave a comment below saying you’d like a code.

I’ll personally DM a promo code giving you one full year of Unwind for free.

The subscription will not be free forever — this giveaway covers the entire first year, normally priced at $12.99. (Don't auto-renew the subscription at the end of this offer.)

As an indie developer, all I ask is that you try the app and, if Unwind helps you feel a little calmer, consider leaving an honest review on the App Store.

Reviews and feedback make a huge difference for small independent apps.

Thank you, and I hope Unwind gives you a peaceful 10 minutes when you need them most.

Offer valid until July 19th

https://preview.redd.it/st439v0tos9h1.png?width=2542&format=png&auto=webp&s=e152d3f413133ca411d2b32d9ced8602750df729

Hey Reddit!

I'm the developer of dpli, a focus noise instrument engineered specifically for restless, neurodivergent minds.

The Backstory: I built this app for my ADHD son who is homeschooled. Traditional noise apps worked for him initially, but standard, looping MP3 files gave him severe headaches during long study sessions.

After diving deep into scientific research, I built dpli to solve this.

👉 App Store Link: https://apps.apple.com/pl/app/adhd-focus-noise-app-dpli/id6760627418

🧠 Why dpli is different:

• Zero Loops, Zero MP3s: Every soundwave is mathematically synthesized in real-time directly on your device. The sound never repeats, meaning your ADHD brain has nothing to latch onto, completely preventing neural adaptation.
• Spatial Shielding (HRTF): Sounds are carefully modulated and placed in a 3D space around you. This externalizes the sound, creating an immersive acoustic barrier that cuts off distractions without tiring your brain and prevent headaches and discomfort.
• Tailored Presets for Any Occasion: Features unique presets (like SHIELD or FLOW) that blend different noise colors with dynamic spatial movements. This creates a fully immersive audio scene designed to completely seal you off from your environment and lock in your focus.
• Tuned Noise Colors: Includes Brown noise (the ADHD gold standard), Pink, White.
• 100% Offline & Privacy-First: No tracking, no data collection, no accounts. Runs natively and efficiently across iPhone, Mac, and Apple Watch.

🎁 How to get Lifetime Access for FREE (Offer valid until July 5th):

1. Upvote this post.
2. Leave a comment below letting me know you want access.

I will personally DM a lifetime promo code to everyone who replies!

As an indie dad-developer, all I ask in return is that if dpli helps you lock into hyperfocus, please leave a quick review on the App Store. It means the world to us!