# RD Smart Tax vs M

The clearest difference is update cadence: RD Smart Tax at every 4 weeks against M's every 2 months. RD Smart Tax also leads on review sentiment (11% vs 0%) and iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model 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 ships an update every 4 weeks, M every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RD Smart Tax | M |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (6 ratings)](https://appshunter.io/ios/app/rd-smart-tax/id616843710/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **10.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 47 MB | 43 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Revenue Department (Thailand)](https://appshunter.io/developer/616843713) | [The Department of Highways, Thailand](https://appshunter.io/developer/1125869830) |

## 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


### M

[App page](https://appshunter.io/ios/app/m-pass/id1201152421)

This application provides M-Pass cardholders with convenient access to their account information. Users can easily check their remaining balance and review their toll usage history anytime, anywhere. Registration is required via the official website to access these features.

**Highlights:** Check remaining balance, View toll usage history, Convenient access, Real-time updates, Easy registration

**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 M free?

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

### Do RD Smart Tax or M have ads?

Neither RD Smart Tax nor M shows ads.

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

RD Smart Tax ships an update every 4 weeks, and M every 2 months. Most recently, RD Smart Tax was updated on October 11, 2026 and M on October 13, 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.*