# NDST500A vs TANCHJIM

The clearest difference is update cadence: TANCHJIM at every 3 weeks against NDST500A's every 6 months. NDST500A's advantage is iOS requirement (9.0 vs 15.6). 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.

NDST500A ships an update every 6 months, TANCHJIM every 3 weeks. The most recent releases landed on October 27, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | NDST500A | TANCHJIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.7 (12 ratings)](https://appshunter.io/ios/app/tanchjim/id6446278638/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 7.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 39 MB | 123 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) | [Nanning Heavy Hammer Technology Co., Ltd.](https://appshunter.io/developer/1677043717) |

## What reviewers say

### NDST500A

[App page](https://appshunter.io/ios/app/ndst500a/id1545279044)

**Features:** macOS Compatibility

**In-app purchases:** none


### TANCHJIM

[App page](https://appshunter.io/ios/app/tanchjim/id6446278638)

Customize your TANCHJIM Bluetooth earphones with signature sound profiles and adjustable settings for a more convenient listening experience. Future updates will include a Parametric Equalizer for advanced audio personalization.

**Highlights:** Bluetooth device tuning, Earphone settings adjustment, Signature sound profiles, Audio personalization, Parametric Equalizer (upcoming)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NDST500A free?

NDST500A is free to download, with no in-app purchases.

### Is TANCHJIM free?

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

### Do NDST500A or TANCHJIM have ads?

Neither NDST500A nor TANCHJIM shows ads.

### Which is updated more often, NDST500A or TANCHJIM?

NDST500A ships an update every 6 months, and TANCHJIM every 3 weeks. Most recently, NDST500A was updated on October 27, 2026 and TANCHJIM 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.*