# AEAT vs AvaiBook

The clearest difference is update cadence: AEAT at every 6 days against AvaiBook's every 5 weeks. On price, review sentiment, 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.

AEAT ships an update every 6 days, AvaiBook every 5 weeks. The most recent releases landed on October 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | AEAT | AvaiBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/aeat/id737744527/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 225 MB | 44 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Agencia Estatal de Administracion Tributaria](https://appshunter.io/developer/521647809) | [AvaiBook Online S.L.U.](https://appshunter.io/developer/1465085553) |

## What reviewers say

### AEAT

[App page](https://appshunter.io/ios/app/aeat/id737744527)

This app allows users to manage tax-related tasks and receive personalized notifications from the tax agency. It offers secure digital identity management and access to various services like appointment booking, debt payments, and document signing.

**Highlights:** Digital identity management, Tax return services, Appointment booking, Debt payment and consultation, Document signing and viewing, Virtual assistance tools, Personalized notifications

**In-app purchases:** none


### AvaiBook

[App page](https://appshunter.io/ios/app/avaibook/id6468505568)

Streamline vacation rental management with this app. It allows property managers to handle listings, bookings, and guest communication from a single platform. Features include traveler registration, invoice generation, direct booking promotion, and calendar synchronization to prevent overbooking.

**Highlights:** Manage listings, bookings, and guests, Traveler registration and document scanning, Invoice generation on the go, Direct booking and payment links, Calendar synchronization to prevent overbooking, Channel manager for multiple listing sites

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

**In-app purchases:** none


## Frequently asked questions

### Is AEAT free?

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

### Is AvaiBook free?

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

### Do AEAT or AvaiBook have ads?

Neither AEAT nor AvaiBook shows ads.

### Which is updated more often, AEAT or AvaiBook?

AEAT ships an update every 6 days, and AvaiBook every 5 weeks. Most recently, AEAT was updated on October 9, 2026 and AvaiBook on September 19, 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.*