Indie dev's Kindle digest service hits 57 weekly active users in 6 months
martyamark · x · 2026-09-06
Indie developer martyamark is promoting his Kindle daily digest service that sends Substack posts, blogs and articles to Kindle devices. Six months in, it has 57 weekly active users — small numbers, but with surprising stickiness: almost every week a stranger sends him a thank-you email for building it. A textbook niche indie product: distributing existing content to a device users already own, growing organically via word of mouth.
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