Seld vs Echosphere Audio

Seld turns your phone into a live audio guide for your group. Speak once — everyone hears you in real time, clearly, whether you are in a crowded square or a silent museum. NO INTERNET REQUIRED Create your own local Wi-Fi hotspot in seconds and broadcast without using any data. Ideal abroad without roaming, underground, or anywhere the signal disappears. Prefer to run online? Share a room code and listeners join from anywhere. FOR TOUR GUIDES AND TRAVELERS • Open a room in a few taps and share a numeric code • Listeners join and hear you instantly — no radios or headsets to rent • Watch your group arrive on a live radar • Two-way voice: guests request the microphone and ask their question MORE THAN VOICE • Group chat with photos, voice notes, map links and locations • Live polls to vote and decide together • Approve, mute or remove participants as needed • Spare keys let a guest join without a room code BUILT FOR Museum and city tours. Factory and site visits. Live translation at conferences. School trips. Silent tours in libraries and temples. Anywhere without cellular infrastructure. Available in English, Turkish, German, French, Spanish, Arabic and Chinese.

Echosphere lets tour guides broadcast their voice live to an entire group, straight to each guest's own phone, no headsets, no shared earpieces, no hassle. HOW IT WORKS Each Echosphere group uses a dedicated portable router running our proprietary firmware. Guests simply connect their phone to this router's local Wi-Fi network either automatically after first pairing, or by scanning a QR code the first time. No account, no setup, no technical knowledge required. Once connected, guests can join the live tour and hear their guide's voice in real time, transmitted entirely over the local network. FOR GUIDES Guides sign in with a secure PIN to start broadcasting. Once live, their voice is streamed instantly to every connected guest on the network. WHAT ECHOSPHERE IS AND ISN'T - Echosphere only transmits the guide's live voice. It does not stream music, recorded audio, or any other content. - Echosphere does not provide internet access. The local network exists solely to carry voice between the guide and guests. - Echosphere is designed to work exclusively with Echosphere-paired routers running our proprietary firmware. It is not compatible with standard consumer routers. Whether you're leading a walking tour, a museum group, or a guided excursion, Echosphere keeps everyone connected to your voice clearly, simply, and without a single headset.