OneSignal vs Customer.io
Side-by-side from the Top 11 rankings of Braze vs CleverTap vs MoEngage: 11 Best Mobile Marketing Software Platforms 2026 and HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026. Last verified July 7, 2026.
The short answer
Customer.io ranks higher on Top 11 (#6 vs #7) for Mobile growth and lifecycle marketers choosing app engagement platforms / Marketing managers choosing marketing automation platforms (HubSpot vs Marketo vs ActiveCampaign vs Klaviyo). A flexible, API-first platform for tech companies to automate messaging based on user behavior.
At a glance
| OneSignal | Customer.io | |
|---|---|---|
| Top 11 rank | #7 / Braze vs CleverTap vs MoEngage: 11 Best Mobile Marketing Software Platforms 2026 | #6 / HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026 |
| Score (out of 9.4) | 8 | 8.2 |
| Best for | Best free-tier push for lean teams | Event-driven messaging for tech |
| Pricing | $ ($0 to custom/mo) | $$ ($100 to $1,500/mo) |
| HQ | San Mateo, USA | Portland, USA |
| Founded | 2014 | 2012 |
OneSignal
Reliable high-volume push with a free tier and a light SDK.
onesignal.comSee full entry in Braze vs CleverTap vs MoEngage: 11 Best Mobile Marketing Software Platforms 2026
Customer.io
A flexible, API-first platform for tech companies to automate messaging based on user behavior.
customer.ioSee full entry in HubSpot vs ActiveCampaign vs Klaviyo: 11 Best Marketing Automation Software 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.