# qdc vs TANCHJIM

The clearest difference is iOS requirement: qdc at 12.0 against TANCHJIM's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

qdc ships an update every 6 weeks, TANCHJIM every 4 weeks. The most recent releases landed on October 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | qdc | TANCHJIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.4 (11 ratings)](https://appshunter.io/ios/app/tanchjim/id6446278638/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 7.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 35 MB | 123 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Qili Audio Application Co., Ltd.](https://appshunter.io/developer/1623518683) | [Nanning Heavy Hammer Technology Co., Ltd.](https://appshunter.io/developer/1677043717) |

## What reviewers say

### qdc

[App page](https://appshunter.io/ios/app/qdc/id1623518681)

**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 qdc free?

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

### Is TANCHJIM free?

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

### Do qdc or TANCHJIM have ads?

Neither qdc nor TANCHJIM shows ads.

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

qdc ships an update every 6 weeks, and TANCHJIM every 4 weeks. Most recently, qdc was updated on October 1, 2026 and TANCHJIM on October 24, 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.*