# RD Smart Tax vs 3 ชั้น

The clearest difference is rating: RD Smart Tax at 2.5 against 3 ชั้น's 1.0. RD Smart Tax also leads on update cadence (every 4 weeks vs every 8 months) and ratings volume (6 vs 1). 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.

RD Smart Tax holds the better App Store score, 2.5 against 1.0. That said, the two scores are not equally well evidenced: RD Smart Tax has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 11% of RD Smart Tax's written reviews are positive against 4% of 3 ชั้น's.

RD Smart Tax ships an update every 4 weeks, 3 ชั้น every 8 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RD Smart Tax | 3 ชั้น |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (6 ratings)](https://appshunter.io/ios/app/rd-smart-tax/id616843710/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/3/id1295531411/reviews) |
| Number of ratings | **6** | 1 |
| Positive reviews | **10.7% of reviews** | 4.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 8 months |
| Monetization | Free | Free |
| Size | 47 MB | 145 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Revenue Department (Thailand)](https://appshunter.io/developer/616843713) | [Office of The National Broadcasting and Telecommunications Commission](https://appshunter.io/developer/721507053) |

## What reviewers say

### RD Smart Tax

[App page](https://appshunter.io/ios/app/rd-smart-tax/id616843710)

This application simplifies filing personal income tax returns and accessing other electronic services from the Revenue Department. It offers a tax calendar, news alerts, tax calculation tools, and online submission for various tax forms. Users can also track tax refunds, find tax offices, and access educational resources.

**Highlights:** Tax calendar with deadlines, News and filing alerts, Tax calculation tool, Online tax form submission, Tax refund tracking, Revenue department office locator, Tax education resources

**In-app purchases:** none


### 3 ชั้น

[App page](https://appshunter.io/ios/app/3/id1295531411)

This app allows users to check mobile number registrations, report suspicious or missing numbers, and lock their identity to prevent unauthorized SIM card registrations. Users can also unlock their identity through the application.

**Highlights:** Check mobile number registrations, Report suspicious numbers, Report missing numbers, Lock SIM registration, Unlock SIM registration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RD Smart Tax free?

RD Smart Tax is free to download, with no in-app purchases.

### Is 3 ชั้น free?

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

### Which has better reviews, RD Smart Tax or 3 ชั้น?

RD Smart Tax is rated higher. RD Smart Tax averages 2.5 out of 5 from 6 ratings, while 3 ชั้น averages 1.0 from 1 ratings.

### Do RD Smart Tax or 3 ชั้น have ads?

Neither RD Smart Tax nor 3 ชั้น shows ads.

### Which is updated more often, RD Smart Tax or 3 ชั้น?

RD Smart Tax ships an update every 4 weeks, and 3 ชั้น every 8 months. Most recently, RD Smart Tax was updated on October 11, 2026 and 3 ชั้น on October 15, 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.*