Customer.io vs OneSignal: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Customer.io and OneSignal side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, OneSignal leads on lower entry price and a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Customer.io
Automated messaging based on user behavior
Best for you if:
- • You want powerful messaging platform
OneSignal
Customer messaging platform for push and more
Best for you if:
- • You want a free tier before you commit
| At a Glance | Customer.io | OneSignal |
|---|---|---|
Starts at | From $100/mo, billed monthly Essentials plan | Free plan, paid from $99/mo, billed monthly Growth plan |
Category | Marketing Automation SMS Marketing | Marketing Automation Push Notifications |
Rating | 4.5/5 G2 4.4 · Capterra 4.7 988 reviews | n/a |
Free plan | No | Yes |
Watch out for | Overage fees for profiles/emails beyond tier limits | n/a |
Choose Customer.io or OneSignal?
Choose Customer.io if
- You want powerful messaging platform
- You want multi-channel
Choose OneSignal if
- You want a free tier before you commit
- You want generous free tier
- You want easy to implement
- Budget matters ($99/mo, billed monthly vs $100/mo, billed monthly)
In-Depth Analysis
Customer.io
Automated messaging based on user behavior
Customer.io's pricing is on the expensive side, especially for smaller businesses, with the Essentials tier starting at $100/month.
Watch out
Overage fees for profiles/emails beyond tier limits
Strengths
- Pro: Powerful messaging platform
- Pro: Multi-channel
- Pro: Developer friendly
- Pro: Good segmentation
- Pro: Real-time data
Weaknesses
- Con: Expensive
- Con: Complex for simple needs
- Con: Learning curve
- Con: UI can be confusing
- Con: Requires technical knowledge
Key features
OneSignal
Customer messaging platform for push and more
OneSignal offers a very generous free tier, allowing up to 10,000 subscribers, which is excellent for startups and small projects.
Strengths
- Pro: Generous free tier
- Pro: Easy to implement
- Pro: Multi-channel support
- Pro: Good documentation
- Pro: Affordable paid plans
Weaknesses
- Con: Less sophisticated than Braze
- Con: Limited analytics
- Con: Basic segmentation
- Con: Support can be slow
Key features
Plans and prices: Customer.io vs OneSignal
| Tool | Plans and prices | Source |
|---|---|---|
| Customer.io |
| customer.io/pricing read Oct 8, 2026 |
| OneSignal |
| onesignal.com read Oct 14, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Customer.io pricing and OneSignal pricing.
Key Takeaways
Customer.io
- Choose if you want automated messaging based on user behavior
OneSignal
- Lower entry price: $99/mo, billed monthly vs $100/mo, billed monthly
- Has a free plan
What the data shows
On the data below, OneSignal leads on lower entry price and a free plan. We do not name an overall winner for this pair.
- Only Customer.io has a published user rating (4.5/5 from 988 reviews); OneSignal has none we can show.
- OneSignal has the lower entry price: $99/mo, billed monthly (Growth) against $100/mo, billed monthly (Essentials) for Customer.io.
- Only OneSignal has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Customer.io and OneSignal compare in 2026?
On the data below, OneSignal leads on lower entry price and a free plan. We do not name an overall winner for this pair. Only Customer.io has a published user rating (4.5/5 from 988 reviews); OneSignal has none we can show. OneSignal has the lower entry price: $99/mo, billed monthly (Growth) against $100/mo, billed monthly (Essentials) for Customer.io. Only OneSignal has a free plan.
What are Customer.io and OneSignal used for?
Customer.io: Automated messaging based on user behavior. OneSignal: Customer messaging platform for push and more.
What does Customer.io cost vs OneSignal?
Customer.io's cheapest paid plan is Essentials at $100/mo, billed monthly. OneSignal's cheapest paid plan is Growth at $99/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 14, 2026.
What's the main difference between Customer.io and OneSignal?
Customer.io's main strength: powerful messaging platform. OneSignal's main strength: generous free tier.