# BrainLink Dual vs Calm冥想

The clearest difference is in-app purchases: BrainLink Dual at none against Calm冥想's 8. BrainLink Dual also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Calm冥想 sells 8 in-app purchases, starting at $1.49 per 7 days. BrainLink Dual asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | BrainLink Dual | Calm冥想 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Size | 7 MB | 36 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Macrotellect Limited](https://appshunter.io/developer/593369519) | [良来 姜](https://appshunter.io/developer/1635476455) |

## What reviewers say

### BrainLink Dual

[App page](https://appshunter.io/ios/app/brainlink-dual/id1528284950)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calm冥想

[App page](https://appshunter.io/ios/app/calm/id1641226930)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周度VIP订阅 | $1.49 | per 7 days |
| 月度VIP订阅 | $2.99 | per month |
| 季度VIP订阅 | $3.99 | per 3 months |
| 《Calm冥想》年度VIP解锁 | $4.99 | per year |
| 《Calm冥想》月度VIP解锁 | $7.49 | per month |
| 终身会员订阅 | $4.99 | one-time |
| 《Calm冥想》月度VIP解锁 | $12.99 | one-time |
| 《Calm冥想》年度VIP解锁 | $35.99 | one-time |


## Frequently asked questions

### Is BrainLink Dual free?

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

### Is Calm冥想 free?

Calm冥想 is free to download, with in-app purchases available.

### Do BrainLink Dual or Calm冥想 have ads?

Calm冥想 shows ads; BrainLink Dual does not.

### Which is updated more often, BrainLink Dual or Calm冥想?

BrainLink Dual ships an update every 2 months, and Calm冥想 every 2 months. Most recently, BrainLink Dual was updated on October 6, 2026 and Calm冥想 on October 15, 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.*