Sileme's blunt-name bet: a ¥1,500 safety app tops China's paid charts

Sileme (死了么, literally "Are you dead?") is a paid iPhone safety app for people living alone: set one emergency contact and check in, and after consecutive missed check-ins the system emails that contact, later adding SMS, so an emergency at home alone is not discovered too late.

That solo dwellers will pay for an app that alerts a contact when they stop checking in — and that a blunt, meme-ready name is the wedge.

Built by three part-time developers in under a month for about ¥1,500 (US$215); initial price ¥1, raised to ¥8 as server costs hit; first funding round later reported at roughly ¥7M.

In mid-2025 the Zhengzhou-based project lead, Lu Gongchen, kept meeting the same ask in online communities: a lightweight safety tool for the millions of young Chinese who live alone in big cities. He and two friends built it part-time in under a month for about ¥1,500, launched it quietly on iOS in 2025 at ¥1, and saw little until 2026-01-10, when a social-media post about the app's name set Chinese feeds alight.

The wave came with real costs: server bills jumped, so the team raised the price to ¥8 and rushed SMS alerts in. Investors circled — an early plan to sell 10% for ¥1M became talk of a near-¥100M valuation within days, and the team says it was already profitable. The blunt name also drew criticism, clones and copycat listings, and on 2026-01-15 the founder confirmed the original listing had been required off the stores. The team re-ran the name publicly — Demumu was chosen for the international rollout, and a user-naming drive later produced the warmer Chinese name 在么在么 ("Are you there?").

Still running as of late May 2026, and growing up rather than sideways: Lu left his day job in February, incorporated a new Hangzhou company, closed a first round the founder puts at roughly ¥7M, and expanded the team to four. The product now pairs the app with a wristband for silent SOS and fall alerts, and a community pilot in Hangzhou's Zihuabu neighborhood has about 50 elderly residents checking in with social workers as their emergency contacts.

The idea was proven by its users before a line of code existed: young netizens repeatedly asked for a check-if-I-am-alive app, so the team built what the community had already described.

The blunt name was distribution — self-explanatory, meme-friendly and free to spread — while the product inside was a one-screen dead-man's switch anyone could learn in seconds.

The economics made the upside pure option value: ¥1,500 and three part-timers meant a total loss was trivial, and pricing could move from ¥1 to ¥8 once real server and SMS costs appeared.

The January takedown forced an early re-platforming: instead of defending one viral name, the team kept the insight (solo safety) and rebuilt around SMS, a wristband and elder-care pilots.

A blunt name that voices a real, unserved fear is distribution. But a meme-built brand carries store-policy and copycat risk, so treat the provocative name as a vessel, not the business.

As of 2026-05-31 the service is live under its new names and is no longer only an app: the four-person Hangzhou team ships an emergency wristband with silent-SOS and fall alerts, and is piloting in a Hangzhou community of 7,560 residents (~2,300 over 60), where ~50 elderly users check in with social workers as emergency contacts. The founder says a user-naming drive produced the current name and that the first round was about ¥7M. The open question is whether a meme-launched safety brand can become a durable, hardware-backed business serving China's 100M+ solo dwellers.