# Handbook Mobile vs Letro

The clearest difference is update cadence: Handbook Mobile at every 4 days against Letro's every 2 weeks. Handbook Mobile also leads on iOS requirement (15.6 vs 18.5). Letro's advantage is ratings volume (3 vs 1). On price, rating, ads and in-app purchases 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 Handbook Mobile against 5.0 for Letro. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Handbook Mobile ships an update every 4 days, Letro every 2 weeks. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Handbook Mobile | Letro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/handbook-mobile/id6741872372/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/letro-secure-communication/id6758909629/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 31 MB | 340 MB |
| Requires iOS | **15.6** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [GreySignal, Inc.](https://appshunter.io/developer/1692169760) | [Letro](https://appshunter.io/developer/1875687658) |

## What reviewers say

### Handbook Mobile

[App page](https://appshunter.io/ios/app/handbook-mobile/id6741872372)

This app provides employees with instant access to company policies, training materials, and procedures on their mobile devices. It streamlines onboarding, facilitates training completion, and allows for document signing, ensuring teams stay informed and compliant.

**Highlights:** Policy and procedure search, Effortless new staff onboarding, Review and complete training, E-signatures on documents, Training video access, Instant answers to questions, Real-time notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Letro

[App page](https://appshunter.io/ios/app/letro-secure-communication/id6758909629)

This secure communication platform offers end-to-end encrypted messaging, file sharing, and document exchange for enterprises. It provides a tamper-proof, blockchain-verified record of all communications, designed to replace email and chat with enhanced security and compliance features.

**Highlights:** End-to-end encryption, Blockchain-verified records, Spam and phishing proof, Role-based permissions, Automated approval chains, Decentralized and federated architecture, Offline communication capability

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

**In-app purchases:** none


## Frequently asked questions

### Is Handbook Mobile free?

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

### Is Letro free?

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

### Which has better reviews, Handbook Mobile or Letro?

Handbook Mobile and Letro are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Handbook Mobile or Letro have ads?

Neither Handbook Mobile nor Letro shows ads.

### Which is updated more often, Handbook Mobile or Letro?

Handbook Mobile ships an update every 4 days, and Letro every 2 weeks. Most recently, Handbook Mobile was updated on October 8, 2026 and Letro 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.*