Klaviyo vs OneSignal: Complete Comparison (2026)
An in-depth comparison of Klaviyo and OneSignal to help you choose the right tool for your business.
Last updated: November 2026
Klaviyo
6.9/10
Klaviyo is an email, SMS and customer data platform for ecommerce brands, priced by active profiles and built around store data and automated flows.
OneSignal
7.1/10
OneSignal is a customer messaging platform for sending mobile push, web push, in-app messages, email and SMS to app and website users.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.9/10 | 7.1/10 |
| Integration | 9/10 | 8/10 |
| Analytics | 9/10 | 6/10 |
| Cost | 4/10 | 7/10 |
| Customization | 8/10 | 6/10 |
| Ease of Use | 6/10 | 8/10 |
| Scalability | 8/10 | 8/10 |
| Security | 7/10 | 7/10 |
| Support | 5/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $20/mo Email | $19/mo Growth |
| Estimated cost for 10 users | Free Free | Free Free |
| Features | ||
| Email Marketing | ||
| Segmentation | ||
| SMS Marketing | ||
| A/B Testing | Not listed | |
| E-commerce Features | Not listed | |
| Landing Pages | Not listed | |
Klaviyo vs OneSignal cost by team size
Klaviyo and OneSignal cost the same at every team size we checked.
| Team size | Klaviyo | OneSignal |
|---|---|---|
| 1 user | FreeFree | FreeFree |
| 5 users | FreeFree | FreeFree |
| 10 users | FreeFree | FreeFree |
| 25 users | FreeFree | FreeFree |
| 50 users | FreeFree | FreeFree |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Klaviyo
- Higher Analytics score (9/10 vs 6/10)
- Higher Customization score (8/10 vs 6/10)
- Better fit for e-commerce (10/10 vs 5/10)
- Better fit for marketing teams (9/10 vs 7/10)
Why choose OneSignal
- Higher Cost score (7/10 vs 4/10)
- Higher Ease of Use score (8/10 vs 6/10)
- Better fit for startups (9/10 vs 6/10)
Pros & Cons
Klaviyo
Pros
- Deep native integration with Shopify and other stores lets marketers segment on real purchase and browsing data.
- A free plan with 250 profiles and a 20 USD entry plan make it cheap to start.
- Since July 2026, SMS uses dollar-based plans with over 70 tiers, so gaps between plans are smaller and larger plans get lower per-message rates.
- A broad product suite covering reviews, helpdesk, personalization and AI agents can replace several separate tools.
Cons
- Billing by active profiles and uneven tier steps cause cost jumps, for example from 150 USD at 10,000 profiles to 350 USD at 15,000 on the Email plan.
- Many features, such as Reviews, Helpdesk, Personalization and Composer, are separately priced add-ons that raise the total bill.
- Free accounts get email support only for the first 60 days, and reviewers on G2 and Trustpilot report slow or hard-to-reach support.
- New users report a learning curve with segments, event triggers and flow logic.
OneSignal
Pros
- A free plan with unlimited push up to 1,000 MAU and 10,000 emails a month makes it cheap to start.
- Push, in-app, email and SMS run from one platform with cross-channel journeys.
- Reviewers on G2 and PeerSpot say the dashboard is easy for non-technical marketers to use.
- A broad integration catalog covers CDPs such as Segment, RudderStack and Hightouch, data warehouses, and analytics tools.
Cons
- PeerSpot reviewers call it expensive for large subscriber bases.
- Free and Growth plans cap segments at 6 and 10, and reporting history at 30 and 90 days.
- SMS pricing is not published and requires a sales conversation.
- Reviewers mention unclear documentation for advanced cases and limited in-app design options.
Not sold on either?
Frequently Asked Questions
OneSignal scores higher on our Marketing criteria: 7.1/10 against 6.9/10 for Klaviyo. The largest gap is in Analytics: 9/10 for Klaviyo and 6/10 for OneSignal.
Both are free for 10 users.
Yes, both Klaviyo and OneSignal have a free plan.
Klaviyo is the better fit for e-commerce: we rate it 10/10 for them, against 5/10 for OneSignal.
