# Doudou Perdu vs Predilux

The clearest difference is review sentiment: Doudou Perdu at 73% against Predilux's 20%. Doudou Perdu also leads on in-app purchases (none vs 1). Predilux's advantage is update cadence (every 4 months vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Predilux sells 1 in-app purchase, starting at $14.99 per year. Doudou Perdu asks for nothing beyond the download.

Doudou Perdu ships an update every 12 months, Predilux every 4 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Doudou Perdu | Predilux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/predilux/id1168322032/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **72.7% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | **Free** | Subscription |
| Size | 26 MB | 69 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Mellouli](https://appshunter.io/developer/1704897147) | [WID LLC](https://appshunter.io/developer/522765968) |

## What reviewers say

### Doudou Perdu

[App page](https://appshunter.io/ios/app/doudou-perdu/id668427481)

This app connects volunteers with lost stuffed animals to their owners. Users can report found toys, view them on a map or list, and earn medals for their good deeds. It aims to reunite children and parents with their beloved companions.

**Highlights:** Report found stuffed animals, View lost toys on map/list, Detailed toy profiles, Volunteer profile with medals, Photo and description submission, Geolocated toy listings

**Features:** macOS Compatibility

**In-app purchases:** none


### Predilux

[App page](https://appshunter.io/ios/app/predilux/id1168322032)

This app helps photographers and videographers predict light exposure based on light source and distance. It also allows inverse measurement of distance by specifying exposure, considering various camera and light source settings, and gels.

**Highlights:** Predict light exposure, Measure distance to light source, Adjust camera settings (FPS, ISO, Shutter), Configure light source settings, Apply gel effects (Diffusion, CTO/CTB, +- Green), Experimentally verified results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Predilux | $14.99 | per year |


## Frequently asked questions

### Is Doudou Perdu free?

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

### Is Predilux free?

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

### Do Doudou Perdu or Predilux have ads?

Neither Doudou Perdu nor Predilux shows ads.

### Which is updated more often, Doudou Perdu or Predilux?

Doudou Perdu ships an update every 12 months, and Predilux every 4 months. Most recently, Doudou Perdu was updated on October 9, 2026 and Predilux on October 12, 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.*