# ChiSensor vs Depths for Couples

The clearest difference is update cadence: ChiSensor at every 10 days against Depths for Couples's every 3 weeks. ChiSensor also leads on iOS requirement (17.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChiSensor sells 3 in-app purchases, starting at $19.99 per month and Depths for Couples sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ChiSensor ships an update every 10 days, Depths for Couples every 3 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ChiSensor | Depths for Couples |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 29 MB | 2 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [ProphecyGenesis TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1841805280) | [Daniel Schneppenheim](https://appshunter.io/developer/694691643) |

## What reviewers say

### ChiSensor

[App page](https://appshunter.io/ios/app/chisensor/id6760758156)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Membership Monthly | $19.99 | per month |
| Pro Membership Yearly | $89.99 | per year |
| Professional Space Report | $6.99 | one-time |


### Depths for Couples

[App page](https://appshunter.io/ios/app/depths-for-couples/id6761380040)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Levels | $0.99 | one-time |


## Frequently asked questions

### Is ChiSensor free?

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

### Is Depths for Couples free?

Depths for Couples is free to download, with in-app purchases available.

### Do ChiSensor or Depths for Couples have ads?

Neither ChiSensor nor Depths for Couples shows ads.

### Which is updated more often, ChiSensor or Depths for Couples?

ChiSensor ships an update every 10 days, and Depths for Couples every 3 weeks. Most recently, ChiSensor was updated on October 9, 2026 and Depths for Couples on October 3, 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.*