AlexanderZ

some people went on to explore the code limits, hehe. it's been fixed

By the way, there is an ios app: https://apps.apple.com/app/id6755528165

well, it's a personal preference thing then. I'd rather enter my email quickly and click a link than generate and store a new password for each website in a password manager

Fixed it. Elon Musk had too much time on his hands

Fixed it. The fun part is there is no real protection against bots/AI and the code works as expected - they EASILY score 100. It's the humans that are too predictable.

plot twist: there is no frog, it's all your internal biases (what you do after success/failure)

On my todo list: when the frog wins, it runs towards you and knocks you out, haha

With Brain Frog I went even further - it doesn't actually check L/R. Instead, it checks what you do after a landed/blocked punch (some people tend to switch after a block, others insist on hitting the same side until they land a hit).

what's your score?

it's the coach mode telling you which biases you have so you can fix them in a ranked match

nice! try playing it the first thing every morning, it really wakes up your brain

you don't have to aim

a variation of Aaronson Oracle

because it doesn't? practice mode requires no login. if you want to play a ranked match then you'll need an account, how else could it work?

practice mode? the record for ranked matches is 64

Hey HN, long time ago I came up with an idea that (by accident) helps with anxiety and procrastination.

I read somewhere that scientists managed to plant false memories into mices' minds. I thought to myself as a joke "well, what if my whole life was actually planted inside my brain? I can only trust my today's self".

So I started referencing myself as Alexander #9,532/#9,533/etc (basically daysCountSinceBirth) when taking notes.

This is when magic happpened.

All of a sudden, I started treating other versions of me not as myself but rather as my best friends.

This meant two things:

1) I stopped being so hard on my past selves.

2) I dramatically reduced anxiety about today's actions. I only got 24h, I do what I can. It's up to future versions of me to figure things out.

So I made an app that treats every version of you as a separate person.

It's a mix of journaling/messenger app. You can post on your page and you can send messages (text/voice/video/photo) to the past and to the future.

I actually made the first version in 2019 (with Rails on the backend) which I've been using ever since. But I never released it publicly because I was uncomfortable with storing peoples deepest thoughts and secrets (even e2e encrypted).

So when I saw that in 2025 it's possible to store user's data in their iCloud account completely (SwiftData + CloudKit), I hastened to rewrite the app from scratch and release it.

The proof that Single Day works is this text - when I posted my other projects on HN before, it would take me many hours/days to write the text and hit send. But today, as Alexander #13,668, I don't care much what happens next (it's up to #13,669 tomorrow hehe).

I urge you to try out Single Day even if you never practiced journalling. I recommend you do this first:

- Record a voice message to your 100-year-old self. Start with "Well, hello..." and see where it leads you.

- Send a text message to your 5-year-old self on Nov 4. So he/she is in the kindergarten and asking if Christmas is coming soon?

- Use the Randomize function to take you to a random date (I found myself the page of past me who was worried about kissing his first gf for the first time, it was funny).

I want this app to help as many people as possible, that's why I made it free if you send <=10 messages per month (which is more than enough for beginners). When you see it's working and you start sending 5 messages/day (as I do), you can always upgrade.

Also all data is yours, you can export it anytime. It's all stored in your iCloud account, there is no backend server for the app.

Thanks! I actually use Zero myself, so it was fun to watch. Unfortunately, the situations are different, because they left all free features free. In our case, some free features will become paid only.

So what does the real minimal setup look like? Will text ("This website uses cookies") + a button ("I agree") work?

Hey HN! I'm Alexander. I love making stuff that solves my own problems.

If you ever ordered shoes online, you know how tricky sizing is. I personally own shoes ranging from size 11 and up to size 13.

Before Feetlot, the solution was to google "SHOE_NAME sizing reddit" and browse through countless threads on Reddit. There, people would post something like "If I'm size 12 in shoe A, what size shoe B should I buy?" Being a programmer, I decided to automate this process. That's how Feetlot was born.

The idea is simple: allow people to enter which shoes in which sizes they wear, then use this data to calculate size differences between shoes.

Example:

User 1 wears shoe A in size 10, shoe B in size 9.5.

User 2 wears shoe A in size 12, is looking to buy shoe B.

Based on User 1 data, we can calculate that there is a -0.5 difference between shoe A and shoe B.

So when User 2 signs up and enters "Shoe A, size 12", we recommend shoe B in size 11.5 to them.

Obviously the real world scenarios involve more shoes.

As of today, 12,152 people signed up and submitted 22,848 sizes resulting in staggering 303,139 unique shoe-to-shoe size differences!

What I love the most about Feetlot is that when people sign up and enter their sizes to get a recommendation, they are actually providing value to other users! I love the "I help you, you help me" model working here.

Every day of your life gets its own page so you can post a comment there.

Usually people write to their past selves regarding some regrets in order to ease the pain. Simply putting your thoughts out of the mind and onto the screen helps. And treating your past self as another person helps, too.

Also people write to their future selves to encourage/overcome the fear of the unknown.

I've been working on an app that allows me to send messages to my past and future selves, as well as posting today's thoughts (for reading by my future self). I had initially created it over a weekend as a fun side project, but it turned out to be a great tool for self reflection. An ios beta is coming out next week, fill out this form if you'd like to try it out:

https://forms.gle/C9KebsV2u64Wqvc56

That was my first thought, but I don't want to lose years of journaling if I lose my phone.

A few years ago I read an article about scientists planting false memories into a mouse. [0]

This got me thinking that people were next. Then I thought: what if it already had happened? What if I've already been planted false memories?

The only time frame in which I can be sure I am who I am is from the time I regain consciousness (wake up) until I lose consciousness (fall asleep). I liked this concept because it freed me from my past and future selves. I am not them.

So, I created a journaling app that uses versions of you instead of dates. This morning, it greeted me with "Good morning, Alexander №10821". I can browse and see what other versions of Alexander (like №9851) were up to. I also understand that tomorrow it's Alexander №10822 who will wake up and not me, so I got to live this day however I like (though as I like the future Alexanders, I'm gonna also contribute to their well-being).

I will make this app public, so if this type of thinking resonates with you, leave your email in the google form I just created. [1] The app will have end-to-end encryption and cost $3/month.

[0] https://www.smithsonianmag.com/innovation/meet-two-scientist...

[1] https://forms.gle/PX8Aca6TR6cg5S9WA

Interesting idea. Would love to specify the categories of startups I'm interested when I sign up. This way your startups can also get only interested people.

Great job! How about adding an option of showing the header when the users moves the cursor to the top of the window? Just like http://lyst.com are doing it.

Good job! I can see using it with my designer to discuss mockups.

Ok, I see people are testing it. When you search for a city, you have to then select it from the dropdown, otherwise it won't work (I'll fix it tomorrow).

http://getairy.com - alpha, works for American hotels for now. Building it to improve my Ember.js skills.

I'm participating in TechPeaks, worked on http://Feetlot.com today. Some other techpeakers decided to visit a 15th century castle in the Alps, but I wanted to implement some new features.

SEEKING WORK - Remote

Rails & Ember.js.

Github: http://github.com/AlexanderZaytsev

Blog: http://say26.com

I'm actually not available any time soon, but I noticed that these posts bring offers for quite some time.