# TAT Calendar vs Smart DASTA

The clearest difference is update cadence: TAT Calendar at every 2 weeks against Smart DASTA's every 2 months. TAT Calendar also leads on iOS requirement (11.0 vs 14.0). 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.

TAT Calendar ships an update every 2 weeks, Smart DASTA every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TAT Calendar | Smart DASTA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/tat-calendar/id1443702137/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 35 MB | 48 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Tourism Authority of Thailand](https://appshunter.io/developer/505420157) | [Designated Areas for Sustainable Tourism Administration](https://appshunter.io/developer/1059436267) |

## What reviewers say

### TAT Calendar

[App page](https://appshunter.io/ios/app/tat-calendar/id1443702137)

This digital calendar helps you organize personal notes, appointments, and travel plans. You can also use it to book tickets and accommodation, and even decorate photos with stickers before sharing them.

**Highlights:** Personal notes and appointments, Travel activity planning, Ticket and accommodation booking, Photo decoration with stickers, Share photos with loved ones

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart DASTA

[App page](https://appshunter.io/ios/app/smart-dasta/id1542294522)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TAT Calendar free?

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

### Is Smart DASTA free?

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

### Do TAT Calendar or Smart DASTA have ads?

Neither TAT Calendar nor Smart DASTA shows ads.

### Which is updated more often, TAT Calendar or Smart DASTA?

TAT Calendar ships an update every 2 weeks, and Smart DASTA every 2 months. Most recently, TAT Calendar was updated on November 2, 2026 and Smart DASTA on November 7, 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.*