Retelio

What it does

Retelio intercepts customer friction before it becomes a lost sale. Smart QR → 3-sec feedback → WhatsApp alert to manager in <60 sec → 68% recovery rate. Zero hardware. ▎ Live in 24 hours.

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  ReOptimize2023 · ▲83

  The all-in-one WhatsApp marketing platform for your business

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  Reply AIApr 2026 · tryreplyai.com · ▲9

  AI sales and customer service for businesses on WhatsApp.

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  Veevi — Invoice from WhatsApp in SecondsJul 2026 · getveevi.com · ▲8

  Clients are already on WhatsApp. Your invoices should be too

• BA
  Building a WhatsApp API with 0 markup on Meta pricingMar 2026 · zernio.com · ▲7

  Hey HN, I'm Pau. We've been building Zernio for the past 9 months and we just crossed $1M in ARR (bootstrapped). Zernio is a unified API for social platforms. One API for Instagram, TikTok, YouTube, LinkedIn, X, and 9 others. Today we're adding WhatsApp. We've spent 3 weeks just getting a test message to send. Meta requires a developer app, a WhatsApp Business Account inside Business Manager, business verification (2-14 days), phone number OTP, webhook configuration with a two-step subscription, and token management for tokens that die every 60 days. Miss one step and messages vanish with no…

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  RezerviniJun 2026 · rezervini.com · ▲3

  Book any business, instantly. One platform for everything.

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  Retveno7d ago · retveno.com · ▲6

  Turn WhatsApp chats into ready-to-confirm bookings

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  Browzer▲427

  Put your technical content on autopilot

  Growth · 14d ago · trybrowzer.com

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  AstraPixels▲267

  ​​A pixel-art solar system at its real current positions.​

  Growth · 29d ago · astrapixels.com

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  Brila▲1,367

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

• IB
  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

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  Fathom 3.0▲803

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• BC
  Brutalist Concrete Laptop Stand (2024)▲786

  Life & fun · Apr 2026 · sam-burns.com

• IB
  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https:&#x2F;&#x2F;text.blogosphere.app&#x2F; Non-minimal: https:&#x2F;&#x2F;blogosphere.app&#x2F; If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app