Brandwave

Customer.io vs OneSignal:Which is more popular?

In September 2026, OneSignal had more branded searches than Customer.io among customer engagement platforms worldwide. OneSignal had about 57,200 branded searches, while Customer.io had 12,300. OneSignal made up 13.3% of all customer engagement platform searches we track, and Customer.io accounted for 2.9%. When we asked ChatGPT and Google AI Overviews about customer engagement platforms, Customer.io appeared in two of the five answers and OneSignal in none.

Among customer engagement platforms worldwide in September 2026

Who do people search for more?

OneSignal, about 5 searches for every 1 for Customer.io

OneSignal 57.2K searchesCustomer.io 12.3K searches

Who does AI mention more?

Customer.io, mentioned in 2 of 5 answers, OneSignal in 0

Customer.io in 2 of 5OneSignal in 0 of 5

Who does AI recommend more?

Customer.io, the only one of the two named

Customer.io first in 2OneSignal never named

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Top customer engagement platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Customer.io was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. OneSignal did not appear in any of the five answers.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Braze1st
  2. Intercom2nd
  3. Klaviyo3rd
  4. Customer.io4th
  5. OneSignal–
  6. CleverTap–
  7. MoEngage–
  8. Airship–
  9. Iterable–
  10. Insider–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Braze4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Intercom4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Klaviyo3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Customer.io2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • OneSignal0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • CleverTap0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • MoEngage0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Airship0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Iterable0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Insider0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about customer engagement platforms

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Is Customer.io or OneSignal more popular in search?

This chart shows how often people search Google for Customer.io and OneSignal by name. Each line represents a brand's share of searches for all ten customer engagement platforms we track, month by month, from English-language searches worldwide.

Customer.io and OneSignal among customer engagement platforms worldwide, by month

Share of searches by month for OneSignal, Customer.io. The figures are in the table below the chart.

View monthly share of searches table
MonthKlaviyoOneSignalCleverTapMoEngageCustomer.ioBrazeAirshipIterableInsiderIntercom
Oct 202569.7%14.1%5.1%6.1%2.8%1.4%0.45%0.15%0.21%0%
Nov 202570.3%14.2%5.1%6.2%2.3%1.2%0.37%0.13%0.19%<0.01%
Dec 202568.6%14%5%7.4%2.8%1.4%0.42%0.14%0.2%<0.01%
Jan 202670.4%14.3%5.2%5.1%2.8%1.5%0.43%0.16%0.19%<0.01%
Feb 202672.3%12.1%5.3%5.2%2.9%1.4%0.45%0.14%0.16%<0.01%
Mar 202670.3%14.3%5.1%5.1%2.8%1.4%0.58%0.17%0.17%<0.01%
Apr 202670.6%14.3%5.2%5.1%2.8%1.2%0.53%0.14%0.15%<0.01%
May 202671.1%14.1%5.1%5%2.8%1.2%0.48%0.17%0.11%<0.01%
Jun 202669.9%13.8%5.1%6.2%2.8%1.3%0.56%0.15%0.11%<0.01%
Jul 202671.4%13.3%5.2%5.2%2.9%1.2%0.48%0.15%0.1%0%
Aug 202671.5%13.3%5.2%5.2%2.9%1.3%0.37%0.13%0.09%<0.01%
Sep 202671.4%13.3%5.2%5.2%2.9%1.3%0.39%0.13%0.08%<0.01%

How has the Customer.io and OneSignal comparison changed over the last 12 months?

3 findings

How did search popularity change for customer engagement platforms worldwide in September 2026?

0 changes

Neither Customer.io nor OneSignal moved beyond provider rounding among customer engagement platforms in September 2026.

How are branded searches counted?

17 search terms

Brandwave collects information about searches that people make online using Customer.io’s and OneSignal’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

6 branded search terms

  • customer io
  • customer io crm
  • customer io email
  • customer io sms
  • customer io whatsapp
  • Customer.io

OneSignal

11 branded search terms

  • one signal
  • one signal notifications
  • OneSignal
  • onesignal app
  • onesignal email
  • onesignal notification
  • onesignal push
  • onesignal push notification
  • onesignal sms
  • onesignal web push
  • onesignal whatsapp

How the Brand Demand Index is measured

Other head-to-heads among customer engagement platforms

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