# AEAT vs Keepstack

The clearest difference is in-app purchases: AEAT at none against Keepstack's 2. AEAT also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Keepstack sells 2 in-app purchases, starting at $5.99 per month. AEAT asks for nothing beyond the download.

AEAT ships an update weekly, Keepstack every 3 weeks. The most recent releases landed on September 23, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | AEAT | Keepstack |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 225 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Agencia Tributaria](https://appshunter.io/developer/521647809) | [DUMITRU BUMBU](https://appshunter.io/developer/1868107712) |

## 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


### Keepstack

[App page](https://appshunter.io/ios/app/keepstack-save-links-and-notes/id6787906490)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $5.99 | per month |
| Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is AEAT free?

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

### Is Keepstack free?

Keepstack is free to download, with in-app purchases available.

### Do AEAT or Keepstack have ads?

Neither AEAT nor Keepstack shows ads.

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

AEAT ships an update weekly, and Keepstack every 3 weeks. Most recently, AEAT was updated on September 23, 2026 and Keepstack 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.*