Webhook Notifier vs Slint Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Webhook Notifier
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Webhook Notifier is an alert app for engineers and operators. Point any system that can send an HTTP request at a URL the app gives you. When the URL is hit, your phone rings. Rules per webhook. Match by HTTP method, by header, or by substring or regex in the body. Alerts only fire when the request actually means something to you. Quiet hours per webhook. Pick the days and the time window when each webhook may wake you. Outside the window the alert is dropped silently. No buzz. No missed call. Bypass silent per webhook. For the alerts that genuinely cannot wait, like production outages or water leak alarms, flip the switch and the notification rings through Silent and Focus modes. This requires the Critical Alerts entitlement from Apple. Share read only. Hand the secret to a teammate and they receive every alert too. Rotate the secret when you want to revoke that. No tracking. No advertising. No analytics on the content of your webhooks. The bearer token that authenticates your device is generated on the device and only the hash is stored on the server. Built for people who already know what a webhook is.
Slint Viewer
This developer tool allows you to preview Slint user interfaces directly on your iPhone or iPad. It connects to your code editor over a local network, displaying your .slint designs live as you make changes. Some programming experience is recommended for optimal use.
- Live UI preview on iOS
- Connects to code editor
- Real-time design updates
- Supports Slint toolkit
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Preview Slint user interfaces on your iPhone or iPad with just your computer and this app. Slint Viewer is a developer tool that connects to your code editor over the local network and shows your .slint designs live on the device as you save. Slint (slint.dev) is an open-source toolkit for building native user interfaces in Rust, C++, JavaScript, and Python. Note: this app is intended for developers using Slint; some programming experience is recommended.
Screenshots
Verdict
Webhook Notifier and Slint Viewer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Webhook Notifier | Slint Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 35 MB | 49 MB |
| Age rating | +4 | 4+ |
| Developer | Alltrons B.V. | SixtyFPS GmbH |
In-app purchases
Webhook Notifier
No in-app purchases
Slint Viewer
No in-app purchases









