# Letras para Volar vs Triggui

The clearest difference is update cadence: Letras para Volar at every 2 months against Triggui's every 8 months. Letras para Volar also leads on iOS requirement (9.3 vs 15.1). 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.

Letras para Volar ships an update every 2 months, Triggui every 8 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Letras para Volar | Triggui |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 63 MB | 22 MB |
| Requires iOS | **9.3** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Universidad de Guadalajara](https://appshunter.io/developer/532902181) | [Trestme Corp SA de CV](https://appshunter.io/developer/1545381593) |

## What reviewers say

### Letras para Volar

[App page](https://appshunter.io/ios/app/letras-para-volar/id1116297040)

Access a library of popular Mexican books and legends to read or listen to offline. Explore curated collections by renowned writers and a special section for children's titles. This program promotes reading as a fundamental tool for learning and development.

**Highlights:** Offline access to books and legends, Popular Mexican literature, Audiobook functionality, Curated collections by renowned writers, Children's literature section, Promotes reading for learning

**Features:** macOS Compatibility

**In-app purchases:** none


### Triggui

[App page](https://appshunter.io/ios/app/triggui/id6752839016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Letras para Volar free?

Letras para Volar is free to download, with no in-app purchases.

### Is Triggui free?

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

### Do Letras para Volar or Triggui have ads?

Neither Letras para Volar nor Triggui shows ads.

### Which is updated more often, Letras para Volar or Triggui?

Letras para Volar ships an update every 2 months, and Triggui every 8 months. Most recently, Letras para Volar was updated on October 24, 2026 and Triggui on October 24, 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.*