# eTax Mobile vs Sinvoice

The clearest difference is update cadence: eTax Mobile at weekly against Sinvoice's every 4 weeks. Sinvoice's advantage is iOS requirement (13.0 vs 15.6). 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.

eTax Mobile ships an update weekly, Sinvoice every 4 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | eTax Mobile | Sinvoice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (234 ratings)](https://appshunter.io/ios/app/etax-mobile/id1589750682/reviews)** | — |
| Number of ratings | **234** | — |
| Positive reviews | 6.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | Free | — |
| Size | 243 MB | 101 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IT Department, General Department of Taxation of Viet Nam](https://appshunter.io/developer/1589750684) | [Viettel Telecom](https://appshunter.io/developer/365850426) |

## What reviewers say

### eTax Mobile

[App page](https://appshunter.io/ios/app/etax-mobile/id1589750682)

This app allows users to create personal income tax declarations and look up tax settlement information. It provides suggestions based on tax authority data and offers notifications for tax obligations and other important updates.

**Highlights:** Create 02/QTT-TNCN tax declarations, Tax settlement information lookup, Suggestions from tax authority data, Notifications for tax obligation changes, Notifications for other updates

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

**In-app purchases:** none


### Sinvoice

[App page](https://appshunter.io/ios/app/sinvoice/id6480585607)

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

**In-app purchases:** none


## Frequently asked questions

### Is eTax Mobile free?

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

### Is Sinvoice free?

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

### Do eTax Mobile or Sinvoice have ads?

Neither eTax Mobile nor Sinvoice shows ads.

### Which is updated more often, eTax Mobile or Sinvoice?

eTax Mobile ships an update weekly, and Sinvoice every 4 weeks. Most recently, eTax Mobile was updated on September 23, 2026 and Sinvoice on September 16, 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.*