# TD vs NDSD250

The clearest difference is update cadence: NDSD250 at every 2 months against TD's every 50 months. 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.

TD ships an update every 50 months, NDSD250 every 2 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | TD | NDSD250 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 2 months** |
| Size | 6 MB | 91 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) |

## What reviewers say

### TD

[App page](https://appshunter.io/ios/app/td-7s/id1324437064)

**Features:** macOS Compatibility

**In-app purchases:** none


### NDSD250

[App page](https://appshunter.io/ios/app/ndsd250/id6451366743)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TD free?

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

### Is NDSD250 free?

NDSD250 is free to download, with no in-app purchases.

### Do TD or NDSD250 have ads?

Neither TD nor NDSD250 shows ads.

### Which is updated more often, TD or NDSD250?

TD ships an update every 50 months, and NDSD250 every 2 months. Most recently, TD was updated on October 14, 2026 and NDSD250 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.*