# WhereisX vs PetDuo

The clearest difference is device support: WhereisX at 4 against PetDuo's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. WhereisX sells 2 in-app purchases, starting at $3.99 per month and PetDuo sells 4 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 8 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | WhereisX | PetDuo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (26 ratings)](https://appshunter.io/ios/app/petduo-cat-translator/id6812650197/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | Every 8 days |
| Monetization | — | Free with in-app purchases |
| Size | 63 MB | 172 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [raygio](https://appshunter.io/developer/6773999464) | [HK FLYBULL TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1626018966) |

## What reviewers say

### WhereisX

[App page](https://appshunter.io/ios/app/whereisx/id6774005019)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WhereisX Pro Monthly | $3.99 | per month |
| WhereisX Pro Annual | $29.99 | per year |


### PetDuo

[App page](https://appshunter.io/ios/app/petduo-cat-translator/id6812650197)

This app offers a fun way for pet parents to understand their furry friends. It features pet sound translation, photo analysis for insights into their condition, and playful interpretations of their perspective. Experience the world through their eyes with unique visual recreations.

**Highlights:** Pet voice translation, Photo analysis, Pet perspective interpretation, Pet vision recreation, Explore pet communication

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Petduo Premium | $9.99 | per 7 days |
| Petduo Premium | $9.99 | per 7 days |
| Petduo Premium | $9.99 | per 7 days |
| Petduo Premium | $59.99 | per year |


## Frequently asked questions

### Is WhereisX free?

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

### Is PetDuo free?

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

### Do WhereisX or PetDuo have ads?

Neither WhereisX nor PetDuo shows ads.

### Which is updated more often, WhereisX or PetDuo?

WhereisX ships an update every 8 days, and PetDuo every 8 days. Most recently, WhereisX was updated on October 31, 2026 and PetDuo on November 1, 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.*