# Serra do Mar vs eTrilhas

The clearest difference is update cadence: eTrilhas at fortnightly against Serra do Mar's every 3 months. Serra do Mar's advantage is iOS requirement (7.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Serra do Mar ships an update every 3 months, eTrilhas fortnightly. The most recent releases landed on January 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Serra do Mar | eTrilhas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/etrilhas/id1177043750/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 88.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Ad-supported |
| Size | 134 MB | 86 MB |
| Requires iOS | **7.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Companhia de Processamento de Dados do Estado de Sao Paulo](https://appshunter.io/developer/684060661) | [ETRILHAS PROJETOS LTDA](https://appshunter.io/developer/1680757679) |

## What reviewers say

### Serra do Mar

[App page](https://appshunter.io/ios/app/serra-do-mar/id1064916276)

**Features:** macOS Compatibility

**In-app purchases:** none


### eTrilhas

[App page](https://appshunter.io/ios/app/etrilhas/id1177043750)

Discover ecological trails and contribute to their conservation and promotion. Find trails suited to your experience level, check in, and rate your visits. Report trail conditions to maintainers and fellow users, and keep a record of your adventures.

**Highlights:** Discover ecological trails, Find trails by experience level, Check in and rate trails, Report trail conditions, Track adventure history

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

**In-app purchases:** none


## Frequently asked questions

### Is Serra do Mar free?

Serra do Mar is free to download, with no in-app purchases.

### Is eTrilhas free?

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

### Do Serra do Mar or eTrilhas have ads?

Neither Serra do Mar nor eTrilhas shows ads.

### Which is updated more often, Serra do Mar or eTrilhas?

Serra do Mar ships an update every 3 months, and eTrilhas fortnightly. Most recently, Serra do Mar was updated on January 3, 2026 and eTrilhas on October 4, 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.*