# Firebase Pusher vs Sentinel Line

The clearest difference is in-app purchases: Sentinel Line at none against Firebase Pusher's 1. Sentinel Line also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 months). Firebase Pusher's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 26.1). On price there is nothing between them.

Both are free to download. Firebase Pusher sells 1 in-app purchase, starting at $1.49 per month. Sentinel Line asks for nothing beyond the download.

Firebase Pusher ships an update every 2 months, Sentinel Line every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Firebase Pusher | Sentinel Line |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/firebase-pusher/id1500150434/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 5 MB |
| Requires iOS | **14.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pavlo Kravchenko](https://appshunter.io/developer/1474839903) | [Frederico Cox](https://appshunter.io/developer/1455752353) |

## What reviewers say

### Firebase Pusher

[App page](https://appshunter.io/ios/app/firebase-pusher/id1500150434)

This utility app allows users to send targeted push notifications to individual users, groups, or based on specific conditions. It supports custom JSON notifications and provides a history of sent messages. The app works with HTTP v1 and offers a premium subscription with a free trial.

**Highlights:** Send notifications by Firebase ID, Send notifications to groups, Send notifications using conditions, Get response after sending, Send custom JSON notifications, Save application lists, Save notification history

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month of premium | $1.49 | per month |


### Sentinel Line

[App page](https://appshunter.io/ios/app/sentinel-line/id6807493110)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Firebase Pusher free?

Firebase Pusher is free to download, with in-app purchases available.

### Is Sentinel Line free?

Sentinel Line is free to download, with no in-app purchases.

### Do Firebase Pusher or Sentinel Line have ads?

Firebase Pusher shows ads; Sentinel Line does not.

### Which is updated more often, Firebase Pusher or Sentinel Line?

Firebase Pusher ships an update every 2 months, and Sentinel Line every 4 days. Most recently, Firebase Pusher was updated on November 3, 2026 and Sentinel Line on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*