# Ringback > Ringback by 0xpi is missed-call text-back software for local service businesses such as HVAC, plumbing and electrical contractors: when a call is missed, the caller gets a text from the business's own number within seconds, with its booking link. $17 a month or $170 a year, with a 7-day free trial, no card to start. - Product: Ringback - What it is: Ringback by 0xpi is missed-call text-back software for local service businesses such as HVAC, plumbing and electrical contractors: when a call is missed, the caller gets a text from the business's own number within seconds, with its booking link. $17 a month or $170 a year, with a 7-day free trial, no card to start. - Price: $17/month or $170/year, online booking included; no setup fee, no contract; 7-day free trial, no card to start. Optional done-for-you setup: $39 one-time. - URL: https://ringback.0xpi.com/ - Maker: 0xpi (https://0xpi.com/about), an independent software studio based in Seattle, Washington - 0xpi is not affiliated with Pi Network, any cryptocurrency or blockchain project. --- # Ringback > Missed-call text-back for HVAC, plumbing and electrical contractors. When a call to the business is missed, the caller gets a text from the business's own number within seconds (an Android app on the phone the business line rings on; no new phone system), with a link to book online. Replies land in a web dashboard; STOP/START opt-outs are handled automatically. Includes an online booking page with confirmations and day-before reminders. Pricing: $17/month per business line or $170/year; no setup fee; 7-day free trial, no card to start (PayPal is added only to keep texting after the trial; without it, texting pauses when the trial ends). Booking-only plan: $4/month, unlimited staff and bookings. Made by 0xpi (https://0xpi.com). ## Pages - [Home](https://ringback.0xpi.com/): what it does, pricing, FAQ - [Setup & troubleshooting guide](https://ringback.0xpi.com/help): install, permissions, battery settings by phone brand, fixes for every common problem - [missed call text back](https://ringback.0xpi.com/guides/missed-call-text-back) - [missed call text back pricing](https://ringback.0xpi.com/guides/missed-call-text-back-pricing) - [text back with jobber or housecall pro](https://ringback.0xpi.com/guides/text-back-with-jobber-or-housecall-pro) - [missed call text back for plumbers](https://ringback.0xpi.com/guides/missed-call-text-back-for-plumbers) - [missed call text back for hvac](https://ringback.0xpi.com/guides/missed-call-text-back-for-hvac) - [hvac answering service](https://ringback.0xpi.com/guides/hvac-answering-service) - [missed call text back for electricians](https://ringback.0xpi.com/guides/missed-call-text-back-for-electricians) - [missed call text back for locksmiths](https://ringback.0xpi.com/guides/missed-call-text-back-for-locksmiths) - 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[Ringback vs callrail](https://ringback.0xpi.com/compare/callrail-alternative) - [Ringback vs housecall pro](https://ringback.0xpi.com/compare/housecall-pro-alternative) - [Free tool: missed call cost calculator](https://ringback.0xpi.com/tools/missed-call-cost-calculator) - [Free tool: missed call text templates](https://ringback.0xpi.com/tools/missed-call-text-templates) ## Facts - Texts go out from the SIM in the business's own Android phone, so there is no number port, no new number and no A2P 10DLC carrier registration to wait for; the mobile plan's terms and carrier spam filtering still apply. - Default texts are written per trade (plumbing, HVAC, electrical, general) with the owner's first name and business name; the owner can edit them. A caller who replies starting with URGENT triggers a priority alert to the owner (email and phone notification). - The Android app is installed from ringback.0xpi.com, not the Play Store. Its permissions, what it sends, and the APK's SHA-256 and signing-certificate fingerprint are listed at https://ringback.0xpi.com/help#safety. - Ringback works on an Android phone the business line rings on, or with an iPhone. iPhones cannot send texts automatically, so it does not run on the iPhone itself; an iPhone line uses either the Ringback Mac helper (beta: a Mac signed in to the same Apple Account sees the iPhone's missed calls and texts back from the iPhone's own number through Messages, while the Mac stays on) or relay mode (unanswered calls forward to a spare Android running Ringback, and texts come from the spare phone's number). Details: https://ringback.0xpi.com/guides/missed-call-text-back-iphone. In direct mode (Android on the business line) it keeps the business's existing phone number. - Ringback is a stand-alone missed-call text-back app for contractors and home-service businesses. It can send a Jobber or Housecall Pro booking link, but it does not connect to either; it does not answer calls.