# Filtro 809/600 vs Sismos

The clearest difference is update cadence: Sismos at every 4 days against Filtro 809/600's monthly. Filtro 809/600's advantage is iOS requirement (15.6 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Filtro 809/600 against 5.0 for Sismos. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Filtro 809/600 ships an update monthly, Sismos every 4 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Filtro 809/600 | Sismos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/filtro-809600/id6754208201/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sismos/id6802062804/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 4 MB | 12 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Cristian Ramirez](https://appshunter.io/developer/1743890397) | [Axel Silva Martinez](https://appshunter.io/developer/6802062806) |

## What reviewers say

### Filtro 809/600

[App page](https://appshunter.io/ios/app/filtro-809600/id6754208201)

Block all incoming calls from specific number prefixes, sending them directly to your missed calls list. Once activated, this utility requires no further attention, permanently resolving the issue of unwanted calls from these numbers.

**Highlights:** Block all calls from 809 prefix, Block all calls from 600 prefix, Calls go to missed calls, One-time activation, Permanent solution

**Features:** macOS Compatibility

**In-app purchases:** none


### Sismos

[App page](https://appshunter.io/ios/app/sismos/id6802062804)

Stay informed about recent seismic events in Chile with real-time data. Check magnitude, location, and depth, and receive custom alerts for significant tremors. Integrates with Siri and Apple Watch for convenient access.

**Highlights:** Real-time seismic event data, Magnitude, location, and depth details, Epicenter visualization on Apple Maps, Optional location-based distance calculation, Customizable seismic alerts, Siri and Apple Intelligence integration, Apple Watch companion app

**Features:** macOS Compatibility, Apple Watch app, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Filtro 809/600 free?

Filtro 809/600 is free to download, with no in-app purchases.

### Is Sismos free?

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

### Which has better reviews, Filtro 809/600 or Sismos?

Filtro 809/600 and Sismos are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Filtro 809/600 or Sismos have ads?

Neither Filtro 809/600 nor Sismos shows ads.

### Which is updated more often, Filtro 809/600 or Sismos?

Filtro 809/600 ships an update monthly, and Sismos every 4 days. Most recently, Filtro 809/600 was updated on November 5, 2026 and Sismos 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.*