Call.fast vs OnAir: 1‑Click Online Calls
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Call.fast, Oct 14, 2026 for OnAir.
The short answer
- Paid plans start at $49.99/month for Call.fast and $9/month for OnAir.
Head to head
Starter
- · 200 call minutes included
- · AI agent, order lookup, Knowledge Base
- · Dedicated US phone number
- · Then $0.25 per minute
Growth
- · 500 call minutes included
- · AI agent, order lookup, Knowledge Base
- · Dedicated US phone number
- · Then $0.25 per minute
Basic Plan
Professional Plan
Business Plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCall.fast gives your store a dedicated phone number answered by an AI agent around the clock. Because it connects to your Shopify store, the agent answers with live data: it finds the caller's order by number, email, or phone and tells them its status, shipment, and tracking. It learns your policies, FAQs, and products automatically when you install, and re-reads your site weekly.
How many potential customer landed on your store, had a question, but did not find someone to speak to? OnAir embeds a sleek "tap to call" widget on your store. Customers can call you from their browser (no app downloads!). You receive calls directly on your phone, while you're on the go. Mark yourself offline and the widget will vanish until you're back online. Route calls between your colleagues. Transcribe calls.
- Answers with live store data: order status, tracking, and product availability
- Learns your policies, FAQs, and products from your site; refreshes them weekly
- Your own dedicated US phone number, with custom agent name and greeting
- Emails you a summary and the caller's number when a call needs a human
- Tap-to-call widget: users can call you from their browser
- Receive calls on your phone: directly, just like a normal call
- Show/hide widget: mark yourself offline and the widget is hidden
- Route calls between colleagues, whomever is online can pickup the customer call
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Call.fast |  OnAir |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Call.fast | OnAir |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Call.fast and OnAir: common questions
- Is Call.fast or OnAir cheaper?
- Paid plans start at $49.99/month for Call.fast and $9/month for OnAir. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for Call.fast, Oct 14, 2026 for OnAir; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for Call.fast, Oct 14, 2026 for OnAir. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.