PaceBrain

What it does

PaceBrain uses 6 peer-reviewed scientific models to predict your race finish time in 30 seconds: for free. Unlike generic running apps, it gives you a Performance DNA profile, AI training plans that adapt weekly, heart rate intelligence, and a race simulator to visualize your fitness trajectory. From 5K to ultra, stop guessing and start running with data. Available as desktop app or Apple iPhone app.

Train smarter with AI-powered coaching, personalized race strategies, and data-driven insights. Track your progress, join challenges, and reach your running goals.

PaceBrain predicts your race time, then builds the training to make you faster. Free to try, no signup. If you're running for fitness without a goal, save your money. If any of these sound like you, keep reading. Sub-4 marathon. Sub-50 10K. A specific number that means something to you. 8 weeks out, 16 weeks out, six months. The date is real and the doubt is real. Not a wishful guess. The number your last 90 days of training has earned you. Other calculators give you a number and walk away. PaceBrain closes the loop — every prediction comes with a plan to make it faster. Paste any recent race — 5K parkrun, half marathon, 10K. We run six prediction models and give you one honest number with…from pacebrain.app

• 
  Pace To Race2019 · pacetorace.com · ▲68

  Giving you r a virtual pacer and trainer in your pocket.

• 
  Paceroo2019 · ▲82

  Improve the speed and quality of your runs

• 
  Pace Chase2024 · ▲119

  Pacing tool for multi-sport athletes

• 
  Runology2024 · runology.app · ▲101

  The first AI powered sport app that analyses your running.

• 
  Running Pace Calculator2025 · joincentury.app · ▲91

  Calculate your running pace, time & distance online

• 
  MyTrainingPlan2024 · mytrainingplan.ai · ▲142

  Stay motivated, run faster

• 
  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 18d ago · spira.ai

• 
  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

• 
  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

• 
  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 21d ago · stillwet.art

• 
  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

• 
  Beam.win▲377

  Run AI agents on one Mac and use its windows on another

  AI · 4d ago · beam.win

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com