# 今日投研 vs 隐语 Chat

The clearest difference is update cadence: 隐语 Chat at every 2 months against 今日投研's every 10 months. 今日投研's advantage is iOS requirement (13.0 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.

今日投研 ships an update every 10 months, 隐语 Chat every 2 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 今日投研 | 隐语 Chat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 132 MB | 99 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [沈阳优聚网络科技有限公司](https://appshunter.io/developer/1828402671) | [大连火石科技](https://appshunter.io/developer/1588841113) |

## What reviewers say

### 今日投研

[App page](https://appshunter.io/ios/app/id6748994269)

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

**In-app purchases:** none


### 隐语 Chat

[App page](https://appshunter.io/ios/app/chat/id6760292042)

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

**In-app purchases:** none


## Frequently asked questions

### Is 今日投研 free?

今日投研 is free to download, with no in-app purchases.

### Is 隐语 Chat free?

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

### Do 今日投研 or 隐语 Chat have ads?

Neither 今日投研 nor 隐语 Chat shows ads.

### Which is updated more often, 今日投研 or 隐语 Chat?

今日投研 ships an update every 10 months, and 隐语 Chat every 2 months. Most recently, 今日投研 was updated on October 8, 2026 and 隐语 Chat on October 16, 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.*