Alternatives
Products that do what Calculator Music – play songs with number keys in the browser does
I built Calculator Music, a small browser toy for playing songs on a calculator with number notes, autoplay, and practice mode. It is here: https://calculatormusic.com No signup is required. I would love feedback on whether the practice mode makes sense and which songs sound recognizable.
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Jan 2026 · lend-me-your-ears.specr.net
- 2IM
Hey, maker here. After launching a daily word search game, I randomly thought of this math game while driving. Finally got around to making it and I think it turned out pretty cool. It’s a math search game that’s meant to help you practice your quick addition, subtraction, multiplication, and division skills. I’m hoping it’ll help people (even those like me who aren’t big on math) learn and increase their speeds. (There are also some settings you can enable to make the game harder) If you try it out, please let me know if you found it fun, if you have anything you’d like me to add, or if you…
2024 · worchle.com
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Hi HN It also supports percentages, dates and variables. I've been working on this alone for a few years now, so would love to get some feedback.
2022 · numpad.io
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I always found sheet music way too hard to read - and I literally spent a year at a company building a sheet music rendering engine. I wanted an app that would display music like the tutorials on YouTube, but not be focused on upselling lessons etc. like most current apps, and also would let me import my own files This works on MIDI files. If it’s a valid midi it probably plays. Since releasing, I did add a subscription for classical music - on a theory that most normal users don’t know what a midi file is. It changed about a month ago from an up front price to in app purchases and/or a…
2023 · jacobdoescode.com
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A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers…
2022
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2018 · github.com
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- 18IG
I’ve always found that online calculators tend to have bad UIs, especially on mobile. Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways. I’ve noticed that fraction calculators (especially mixed fractions) are terrible to use, even on desktop. I haven’t built one of those yet, but it’s something I’m planning to tackle soon. This is a project I’ve always wanted to work on, but I’m relatively new to this space. So far, I’ve created a collection of simple calculators focused on math and finance. I’d…
2025
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I built this app because I realized that I forgot about a song for a while and therefore got a lot worse at that song. The app will make you play your lowest-proficiency songs (something you just started learning) daily. Medium-proficiency songs (you can play them, but you have room for improvement) get played several times a week. High-proficiency songs (you have mastered them) are cycled through at the rate of approximately one-two per day. This app is in no way complete and probably contains bugs. With that being said, I have been daily-driving it in its current state for several days…
2023 · github.com
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Hi, I whipped up this daily piano challenge game after noticing my partner struggling to play a tune by ear. She could hum the tune, but was struggling with recognizing whether the next note would be higher or lower than the previous. That gave me the idea of KeyByKey. A simple Wordle-style daily challenge game, where you are given a tune to play back by ear. There's no limit to the number of attempts, but after successfully completing the challenge it will show how you compare to other players. Still ironing out some bugs. Let me know what you think!
Dec 2025 · keybykey.app
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