PortSIP UC vs LetsLinkApp

PortSIP Softphone is a SIP-based softphone application designed for iPhone. It utilizes Wi-Fi or 4G/LTE connections to enable users to make and receive calls and instant messages. When integrated with PortSIP PBX, PortSIP Softphone supports push notifications, allowing users to receive calls and messages even when the application is force terminated. With access to the iPhone's contact list, PortSIP Softphone offers a user-friendly interface for efficient communication management. It supports multiple calls, enabling users to switch between calls, merge and split calls, and perform attended and unattended transfers. Additionally, it supports video conferences with MCU (Multipoint Control Unit) support. PortSIP Softphone prioritizes security and incorporates advanced settings for secure call signaling and audio encryption. The application supports high-definition video calls up to 1080P with H.264 and VP8 codecs and ensures high-quality audio calls. The supported codecs include G.279, G.711a/u, Opus, AMR, AMR-WB, G.722.1, iLBC, GSM, and SPEEX-WB.

Stop the "when are you free?" group-chat loop. LetsLink finds the time that actually works — in one tap. Import your Google, Microsoft, or Apple Calendar, set your weekly availability, and send a LinkUp. Your friends see only the slots that work for everyone, RSVP once, and it lands on every calendar automatically. HOW IT WORKS • Connect Google, Microsoft, or Apple Calendar — we read only your busy/free windows • Set the days and hours you're open to plans • Send a LinkUp to a friend or a group — everyone sees only the overlapping times • Or post an Open Invite to your friends' feed and let anyone free join • Confirm a slot — it's on every attendee's calendar instantly WHY PEOPLE USE LETSLINK • Brunch, gym, date nights, study groups, work check-ins — coordinated without burning an afternoon in the chat • Pick Zoom as the meeting type and we auto-create a real meeting on your account; the link goes to everyone • Share your own public booking link (letslinkapp.com/u/yourname) — free, native, and tied to your real calendar • Send LinkUps straight from iMessage, without leaving the chat • Get a nudge when a friend arrives at the meetup spot • Connect Apple Focus so LetsLink pauses incoming plans in Sleep or Work mode PRIVACY BY DEFAULT • Friends see only "busy" or "free" — never your event titles or locations • Google, Microsoft, Apple, and Zoom tokens stay encrypted in the iOS Keychain, on your device • No ads. No tracking SDKs. No selling data. • Row-level security on every record — no one reads what isn't theirs BUILT FOR iOS 26 • Native SwiftUI with Liquid Glass throughout • Full Dynamic Type, VoiceOver, and Reduce Motion support • Push via Firebase — notifications only, no analytics LetsLink turns the part everyone hates — pinning down a time — into one tap, then gets out of the way. Free to download. ———— Questions? dev@letslinkapp.com Web: https://letslinkapp.com Privacy: https://letslinkapp.com/privacy Terms: https://letslinkapp.com/terms