--- title: "Customer.io vs Firebase Cloud Messaging: Which is searched more?" description: "Is Customer.io or Firebase Cloud Messaging more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Push notification services set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/customer-io-vs-firebase-cloud-messaging" publisher: "Brandwave" --- # Customer.io vs Firebase Cloud Messaging: Which is searched more? Is Customer.io or Firebase Cloud Messaging more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Push notification services set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Customer.io and Firebase Cloud Messaging - **Competitive set**: Push notification services - **Market**: Global - **Month measured**: Sep 2026 - **Customer.io Share of Search**: 10.4% - **Firebase Cloud Messaging Share of Search**: 6.9% ## Is Customer.io or Firebase Cloud Messaging more popular in search? - In September 2026, Customer.io had more branded searches than Firebase Cloud Messaging among push notification services worldwide. Customer.io had about 12,300 branded searches, while Firebase Cloud Messaging had 8,100. Customer.io made up 10.4% of all push notification service searches we track, and Firebase Cloud Messaging accounted for 6.9%. - Customer.io was ahead of Firebase Cloud Messaging in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Customer.io’s share of searches among push notification services worldwide moved from 9% to 10.4%, and its estimated monthly branded searches held steady at 12.3K. - Across the 12 months ending September 2026, Firebase Cloud Messaging’s share of searches among push notification services worldwide moved from 8.9% to 6.9%, and its estimated monthly branded searches moved from 12.1K to 8.1K. ## Top push notification services in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Firebase Cloud Messaging appeared in all five answers. Customer.io was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Firebase Cloud Messaging was listed before Customer.io in every answer. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | OneSignal | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Firebase Cloud Messaging | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | PushEngage | 3rd | 1 of 3 | 2 of 2 | 3 of 5 | | Customer.io | 4th | 2 of 3 | 0 of 2 | 2 of 5 | | Braze | 5th | 2 of 3 | 0 of 2 | 2 of 5 | | Airship | 6th | 1 of 3 | 0 of 2 | 1 of 5 | | Pusher | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Pushwoosh | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Iterable | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | CleverTap | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | MoEngage | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about push notification services - Asked ChatGPT "Which push notification service should I use?": 1. Firebase Cloud Messaging, 2. OneSignal - Asked ChatGPT "What are the best push notification services?": 1. OneSignal, 2. Firebase Cloud Messaging, 3. Braze, 4. Customer.io, 5. Airship, 6. PushEngage - Asked ChatGPT "What's the best push notification service for an app team?": 1. OneSignal, 2. Firebase Cloud Messaging, 3. Customer.io, 4. Braze - Searched Google, AI Overview "push notification service": 1. Firebase Cloud Messaging, 2. OneSignal, 3. PushEngage - Searched Google, AI Overview "push notification tools": 1. OneSignal, 2. PushEngage, 3. Firebase Cloud Messaging Not named in any answer: Pusher, Pushwoosh, Iterable, CleverTap and MoEngage. Brands are listed in the order each answer named them. The answers were collected in the United States on October 21, 2026. ## How did search popularity change for push notification services worldwide in September 2026? - In September 2026, Firebase Cloud Messaging lost share of searches among push notification services worldwide, from 8.3% to 6.9%. ## Month by month | Month | Customer.io estimated searches | Customer.io Share of Search | Customer.io rank | Firebase Cloud Messaging estimated searches | Firebase Cloud Messaging Share of Search | Firebase Cloud Messaging rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 12.3K | 9% | 3 | 12.1K | 8.9% | 4 | | Nov 2025 | 10.1K | 8.2% | 3 | 9.9K | 8% | 4 | | Dec 2025 | 10.1K | 9% | 3 | 9.9K | 8.8% | 4 | | Jan 2026 | 12.3K | 9.7% | 3 | 9.9K | 7.8% | 4 | | Feb 2026 | 12.4K | 10.7% | 3 | 9.9K | 8.6% | 4 | | Mar 2026 | 12.4K | 9% | 3 | 12.1K | 8.8% | 4 | | Apr 2026 | 12.3K | 9.8% | 3 | 9.9K | 7.9% | 4 | | May 2026 | 12.3K | 9.8% | 3 | 9.9K | 7.9% | 4 | | Jun 2026 | 12.3K | 9.9% | 3 | 9.9K | 7.9% | 4 | | Jul 2026 | 12.3K | 10.3% | 3 | 9.9K | 8.3% | 4 | | Aug 2026 | 12.3K | 10.2% | 3 | 9.9K | 8.3% | 4 | | Sep 2026 | 12.3K | 10.4% | 3 | 8.1K | 6.9% | 4 | ## How each brand is measured Brandwave collects information about searches that people make online using Customer.io’s and Firebase Cloud Messaging’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **Customer.io**: Measured on the search terms “customer io”, “customer io crm”, “customer io email”, “customer io sms”, “customer io whatsapp” and “Customer.io”, summed into one figure. - **Firebase Cloud Messaging**: Measured on the search term “firebase cloud messaging”. - [Customer.io profile](/demand/global-en/brands/customer-io) - [Firebase Cloud Messaging profile](/demand/global-en/brands/firebase-cloud-messaging) - [All push notification services worldwide](/demand/global-en/categories/push-notification-services): The set both shares are measured inside, 11 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Customer.io or Firebase Cloud Messaging more popular in search? In September 2026, Customer.io had more branded searches than Firebase Cloud Messaging among push notification services worldwide. Customer.io had about 12,300 branded searches, while Firebase Cloud Messaging had 8,100. Customer.io made up 10.4% of all push notification service searches we track, and Firebase Cloud Messaging accounted for 6.9%. ## Cite this page Brandwave. "Customer.io vs Firebase Cloud Messaging: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/customer-io-vs-firebase-cloud-messaging This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/customer-io-vs-firebase-cloud-messaging. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.