
Ultimath — stop hallucinating numbers | math API + MCP
Verify mathematical expressions reliably using five independent numeric engines via REST API and MCP.
@UtevR57878 · X
Not vibe-coded, rather AI assisted dev:
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Verify mathematical expressions reliably using five independent numeric engines via REST API and MCP.
@UtevR57878 · X
Not vibe-coded, rather AI assisted dev:

Turn plain English into Excel and Google Sheets formulas, then analyze and export reports.
@ExpressSheet · X
Upload a spreadsheet. Ask questions in plain English. Get insights, charts, and a polished PDF report back. ExpressSheet is like having a data analyst on call, 24/7. Start free:

Spotlight forms show every question while one stays in focus. Classic pages and focused flows too, plus calculations, conditional logic, signatures, PDFs.
@SharaForms · X

Solve math problems and collaborate with peers using AI assistance.
lemma1729 · HN
Hi HN, This is ProofTree, and in TLDR: it is a platform where you can chat with an AI to do math, the way you already do, with context-awareness and knows how you personally do math, connected to the fora of other live human mathematicians. So, when you are talking to an AI about a proof at 3 am, and you need a human expert looking at it, or a discussion around it, like you do on StackExchange, this is it! You need an approved email account to use it, so please write here if you would live to try it out.

Query spreadsheets and datasets with natural language questions to instantly generate answers and reports.
u/maybeImakemoney · Reddit
I built the thing. Now I am not sure the base use case is one people will pay for. Founder here. This started as a side learning project to see whether an LLM could answer questions about Excel data, back when they could not do it well. I built the first version on n8n, with workflows that ingested files, generated metadata with an LLM, and answered questions against the converted data plus that metadata. Then I started using it for my own analysis and report generation, saw that the time sav

Browse and copy 2054+ Google Sheets formulas for progress bars, star ratings, and visual effects.
@Kamphey · X
I made a database of 2,000 google sheets formulas that bring JOY to sheets. includes Star Wars, Lord of the Rings progress bars, and timers, and compasses too.

Practice algorithm interview problems with solutions and interactive visualizers.
@Galliard232634 · X
Come study with me on

Create AI-powered presentation slides in under 60 seconds by providing your own API key.
fer_momento · HN
I Made Generateppt.com Free

Free collection of 12 online generators for QR codes, passwords, business names, quotes, and more.
@Oriam216 · X
Just launched AltosTools 🧰 — 12 free online generators in one place. QR codes, passwords, business names, price quotes & more. No sign-up, works on mobile, runs 100% in your browser. Try it 👉 #buildinpublic #freetools #indiehackers

Interactive linear algebra tutor where you solve matrix problems with real-time AI hints.
u/CarefulArmadillo3496 · Reddit
SparkGap - an agentic linear algebra experience Hey everyone, I'm building sparkgap.ai , an interactive tutor for linear algebra. You fill in the matrices/vectors, the LLM gives you hints until you get it correct. The hope is that it will get smarter over time from the context of which questions were missed/answered correctly. As you master concepts, the progress ring next to each concept will slowly fill in. Hopefully it should be very difficult to get to full mastery. Feedback and qu

Chat with an AI agent to research, write, and create illustrated booklets.
BookletAI — 面向普通用户的小册子 AI 工具,可自动调研、写作并生成排版好的 booklet 页面。

Input a math problem to get AI-generated visual explanations for learning.
@laodaozzz · X
我也做了一个教小朋友学数学的工具叫easymath。