# TD vs NDSR355A

The clearest difference is update cadence: NDSR355A at every 10 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, NDSR355A every 10 months. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | TD | NDSR355A |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 10 months** |
| Size | 6 MB | 39 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


### NDSR355A

[App page](https://appshunter.io/ios/app/ndsr355a/id6449562008)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TD free?

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

### Is NDSR355A free?

NDSR355A is free to download, with no in-app purchases.

### Do TD or NDSR355A have ads?

Neither TD nor NDSR355A shows ads.

### Which is updated more often, TD or NDSR355A?

TD ships an update every 50 months, and NDSR355A every 10 months. Most recently, TD was updated on September 30, 2026 and NDSR355A on September 29, 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.*