WhatA mobile app that converts saved articles, newsletters, and web pages into natural-sounding podcast-style audio entirely on-device, with no streaming or cloud costs.
SignalThe very first commenter asks for exactly this — the ability to have articles read aloud like a podcast on iPhone — and it clearly resonates because on-device TTS has just become good enough to make the experience tolerable without a data connection.
Why NowSub-25MB TTS models that sound expressive enough for long-form listening have just arrived; simultaneously, newsletter and read-later app usage is at an all-time high, and Apple's on-device ML frameworks (CoreML, MLX) make integration straightforward.
MarketConsumers who use Pocket, Instapaper, or Substack and commute or exercise — tens of millions of users. Competitors: Speechify ($100M+ ARR) charges monthly for cloud TTS; an offline-first free/cheap alternative with no per-word cost has a clear wedge.
MoatNetwork effects are weak, but being first to nail the UX of offline article listening with genuinely good voices creates strong habit-based retention and App Store ranking momentum.
Show HN: Three new Kitten TTS models – smallest less than 25MBView discussion ↗ · Article ↗ · 480 pts · March 19, 2026
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