Show HN: Chatty Lingo – A language practicing app https://ift.tt/oXJj0hk

Show HN: Chatty Lingo – A language practicing app Hey all, I've built a web app for practicing spoken conversations in a language you're learning. It was driven by my own needs when I learn Korean. The main functionality includes two modes: 1. Chat with AI — you pick a situation (ordering at a café, taking a taxi, checking into a hotel) and the AI plays the other role entirely in your target language. It stays in character, adapts to what you say, and you can fail as many times as you want with nobody watching. 2. Chat with Human — for real, in-person conversations with native speakers (think traveling abroad and talking to a local). It translates the conversation in real time so both sides can actually communicate, and saves the full transcript so you can review it afterward and learn from what was said. I'm a solo dev. The web app is live today and mobile is still being built. The app is still at early stage, I'm adding more features to it. I'd love some feedbacks, especially on what features you think are missing and what you would expect from a language learning app. Here is a demo page where you can play with it without signing up: https://ift.tt/wrhXpea https://ift.tt/8SkdzUv June 18, 2026 at 02:01AM

Show HN: I built a spelling app for kids with my 7-year-old https://ift.tt/kWDZdRB

Show HN: I built a spelling app for kids with my 7-year-old Hello HN! I made an iPad app with my seven-year-old daughter to make learning spelling fun. https://spellabee.com/ We play Spelling Bee type games in our car rides, and she wanted to learn more words that way. So we built a simple app that teaches 10 words at a time, and lets the kids practice and master these 10 words. The full word list in the app is static, and it gets progressively harder as the kid goes through the levels. There are no AI features in the app. I do not collect emails inside the app or have third party trackers. Based on feedback (reviews) and aggregate usage data I plan on updating the app with new word sets. Although the app does not have any AI features I used AI to build the app itself. I used Claude to code the app using Flutter, do etymology research, and understand what alternative apps that are in the App Store. While the LLMs were good at providing a lot of information, I had to synthesize it and play a strong Product Manager role to drive the vision and keep the app simple. My daughter provided a lot of feedback and helped simplify the app and refine the UX. The "Bee Stage" design was inspired by her drawing. Without AI tools, it would have been almost impossible for me to build and launch this app. But it still required a lot of decision-making and prioritization to get the product out of the door. I strongly believe that while AI is a powerful tool, human taste is the differentiator in well made products. If you have a kid in K-5 who is interested in spelling bee type games, give it a try and I would love to hear any feedback you may have as a parent. App store: https://ift.tt/bFTSJyt... https://spellabee.com/ June 18, 2026 at 01:36AM

Show HN: Vpod – Tiny Linux sandbox running in WASM https://ift.tt/m1fCODE

Show HN: Vpod – Tiny Linux sandbox running in WASM Hi HN, I spent the last few months reading the RISC‑V specification to build the lightest possible sandboxes. The idea behind a vpod is to quickly spin up a Linux sandbox from snapshots (Alpine by default) without any setup or subsystem required. The trade-off for portability and security is raw CPU speed. So we don't expect it to match native workloads with Python or pip, for example. More info is in the README https://ift.tt/cD7pyzB Happy to answer any questions! https://ift.tt/cD7pyzB June 17, 2026 at 08:41PM

Show HN: Sabela – A Reactive Notebook for Haskell https://ift.tt/uLVGS6X

Show HN: Sabela – A Reactive Notebook for Haskell Sabela is a reactive notebook for Haskell. The name is the Ndebele word for "to respond." Cells respond to each other on change. Initially it was meant as a tool for working with data but it has turned out to have a lot of pedagogical value outside of data analysis work. There is a gallery to read through on the website and a number of examples in the repo showcasing things like: * Python interop * Widgets and animation * Exploratory data analysis If you find any of this interesting please try it out. Any feedback is welcome. https://ift.tt/m4GOkJP June 14, 2026 at 12:33PM

Show HN: Vet turned founder, AI lawn diagnosis https://ift.tt/V6OunUh

Show HN: Vet turned founder, AI lawn diagnosis I know, it's kind of weird. What is a veterinarian doing creating an analysis tool for lawn problems? Frankly, the idea was born of my own lawn care struggles. Endless lawn care company fees without any actual improvement. Googling problems and finding generic solutions without regional considerations. One time I overseeded my grass not realizing I had to actually put soil down too. One day, I decided to run lawn pictures through AI and found some pretty helpful information. So I decided with my clinical background (the idea of treating the cause, not just the symptoms), as well as tech savvy, I would create an AI tool where homeowners can upload pictures of their lawn, enter their ZIP code, and get a diagnosis tailored to their location with actionable next steps in just 15 seconds. Completely free. The platform is monetized with affiliate sales (if a user elects to purchase through one of our Amazon or other links) and by selling exclusive rights to individual ZIP codes to lawn care companies seeking warm leads. Users can pursue their own DIY plan, purchase a lawn care subscription service, or contact a local lawn care system. I'd love if you'd test it out, toy with it, try to break it, and give me your feedback. Any feature requests would be super helpful. Thanks! Excited to hear your thoughts. Andrew https://grassdx.com/ June 15, 2026 at 09:56PM

Show HN: StarScope – Free astronomy dashboard for observers outside the US/UK https://ift.tt/w0pxJh2

Show HN: StarScope – Free astronomy dashboard for observers outside the US/UK https://starscope.live/feed June 15, 2026 at 11:21PM

Show HN: Understand and reduce token usage with ContextSpy context profiler https://ift.tt/1FRASO4

Show HN: Understand and reduce token usage with ContextSpy context profiler https://ift.tt/khdO5GA June 15, 2026 at 11:29PM