# SIGNL4 vs BasicPomo

The clearest difference is price: SIGNL4 at Free against BasicPomo's $0.99. SIGNL4 also leads on update cadence (every 3 weeks vs every 6 months) and iOS requirement (16.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

SIGNL4 is free to download; BasicPomo costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SIGNL4 ships an update every 3 weeks, BasicPomo every 6 months. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SIGNL4 | BasicPomo |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (164 ratings)](https://appshunter.io/ios/app/signl4-mobile-alerting/id1100283480/reviews)** | — |
| Number of ratings | **164** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 55 MB | 11 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Derdack GmbH](https://appshunter.io/developer/466792511) | [Lars Gregori](https://appshunter.io/developer/1547530655) |

## What reviewers say

### SIGNL4

[App page](https://appshunter.io/ios/app/signl4-mobile-alerting/id1100283480)

This app provides instant mobile alerting for critical incidents across various sectors like worker safety, IT operations, and disaster response. It ensures timely notification and response for teams through persistent alerts, acknowledgements, tracking, and escalations.

**Highlights:** Instant mobile alerting, Persistent notifications (push, SMS, voice), Acknowledgement and tracking, Automated escalations, On-call duty and shift management, Integrations with IT/IoT systems, Audit trails and reporting

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

**In-app purchases:** none


### BasicPomo

[App page](https://appshunter.io/ios/app/basicpomo/id6747687991)

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

**In-app purchases:** none


## Frequently asked questions

### Is SIGNL4 free?

SIGNL4 is free to download, with no in-app purchases.

### Is BasicPomo free?

BasicPomo costs $0.99, with no in-app purchases.

### Do SIGNL4 or BasicPomo have ads?

Neither SIGNL4 nor BasicPomo shows ads.

### Which is updated more often, SIGNL4 or BasicPomo?

SIGNL4 ships an update every 3 weeks, and BasicPomo every 6 months. Most recently, SIGNL4 was updated on October 12, 2026 and BasicPomo on October 8, 2026.

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