Su

Sumday – a daily game: make an equation from today's date

Hacker News

Sumday – a daily game: make an equation from today's date

Hi all! This is a game I made where you try to make an equation from today's date, using every digit in order. I had a substitute math teacher in middle school who did this on the whiteboard one day, and I've been doing it for fun every so often since. I was inspired by wordle to make it into a daily web game, but unlike wordle and other games in that genre, you don't need to guess one specific solution. Any valid equation works. I found that mechanic more enjoyable and let me focus on just the math. Each day does have a "canonical" solution that you can gradually reveal with the Hint button, but that doesn't need to be your equation. Let me know what you think, I hope you enjoy it!

Visit product View on Hacker NewsAug 27, 2026

Actual performance

5points

1comments

Did not reach leaderboard

Launch Intel predictions

Analyze your own launch →

Indie HackersFits the IH revenue-focused audience · Missing: supports, reddit linkedin, podcasting

63%63% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Product HuntOn track for Day 1 leaderboard · Strong signals: using · Missing: mac, agents, macos

56%56% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

Hacker NewsStrong engagement from HN community · Strong signals: io · Missing: https docs, excited, just released

53%53% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

TrustMRRFits verified-revenue profile · Missing: mobile apps, ios, personal

51%51% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

AppSumoMay struggle as an AppSumo deal · Missing: plus, platform, intuitive

48%48% predicted probability of success on AppSumo, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

17%17% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Missing: web3, chat, crypto

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

Similar products

my first app - Is there a Giants game today?44%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

my first app - Is there a Giants game today?

Ridella a Daily Riddle Game43%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Ridella a Daily Riddle Game

Daily collider game with provable speedruns44%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Daily collider game with provable speedruns

Same Shoe Blackjack66%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

A Daily Game of Blackjack.

Indie Hackers1games

Twofer Goofer33%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Whimsical daily rhyming game

Indie Hackerscommitment-side-project

Today55%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Make your side project a daily habit

Indie Hackers2productivity

Utdon – Are you up to date or not?58%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Utdon – Are you up to date or not?

What's today's date if we used a perrenial calendar63%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

What's today's date if we used a perrenial calendar

Blackjack Smack49%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Free daily game, with a snarky dealer...

Indie Hackers1games

Phrasaled36%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

The free daily phrasal verb game

Indie Hackers1games

Browse all products Analyze your launch