Push / In-app Messaging SDK
The clearest split is that Courier and Batch overlap on scope but take different approaches. Courier is Multi-channel notification API routing messages across email, push, SMS, Slack, and in-app with template; Batch is Mobile push notification and in-app messaging platform with segmentation, A/B testing, and transactional message. The data points Courier at mobile app engagement and user lifecycle messaging, and Batch at transactional + marketing push with behavioral segmentation and a/b testing push notification copy and send-time. Pricing: Courier is freemium, free tier; Batch is freemium, free tier. Lock-in is medium for Courier and medium for Batch, with DX at 4/5 vs 4/5 and transparency at 4/5 vs 4/5. Neither lists an enterprise tier, so contract-level buying may require a direct conversation. Honest trade-off: Courier is not for web-only products without mobile; Batch is not for teams needing email, sms, and in-app in one mature suite, so confirm the fit first, then weigh the pivotal factor above against your budget and lock-in tolerance.
Quick take
Courier is for mobile; Batch is for european mobile apps wanting gdpr-native push with segmentation; decide based on which scope-fit aligns with your team.
| | | |
|---|---|---|
| Category | Push / In-app Messaging SDK | Push / In-app Messaging SDK |
| Pricing Model | freemium | freemium |
| Entry Price | — | — |
| Free Tier | Yes | Yes |
| Billing Complexity | — | — |
| Developer Experience | 4/5 | 4/5 |
| Pricing Transparency | 4/5 | 4/5 |
| Lock-in Level | medium | medium |
| Migration Complexity | — | — |
| Data Portability | — | — |
| Enterprise | — | — |
| GitHub Stars | 220 | — |
| License | MIT | — |
Choose Courier if your workload matches mobile and your work involves mobile app engagement. Skip it if your context is web-only products without mobile.
Not for: Web-only products without mobile
Choose Batch if your workload matches european mobile apps wanting gdpr-native push with segmentation and your work involves transactional + marketing push with behavioral segmentation sdk. Skip it if your context is teams needing email, sms, and in-app in one mature suite.
Not for: Teams needing email, SMS, and in-app in one mature suite
Check each tool's dedicated page for deeper reviews, setup notes, and pros/cons.
Entry pricing is listed as unknown for Courier and unknown for Batch. Both offer a free tier for getting started. Total cost at scale depends on usage and plan details that are not in this dataset, so confirm with each vendor.
Courier is tagged with medium lock-in (proprietary routing, templates portable). Batch is tagged with medium lock-in (push/messaging sdk integration). Plan for SDK replacement, data export, and a parallel-run period; the dataset does not include migration tooling details.
Both are rated 4/5 for developer experience in this dataset. With equal scores, the choice comes down to the specific SDK surface and docs you will use day to day. Run a short spike on each before deciding.
Batch is listed as fitting european mobile apps wanting gdpr-native push with segmentation, which overlaps with but is not identical to Courier's scope. Batch is flagged as not for teams needing email, sms, and in-app in one mature suite, so confirm your context does not fall there.
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