# Ducker Detective vs Collateral Appraisal

The clearest difference is in-app purchases: Collateral Appraisal at none against Ducker Detective's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ducker Detective sells 10 in-app purchases, starting at $0.99 per month. Collateral Appraisal asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ducker Detective | Collateral Appraisal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/ducker-detective/id1555299893/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 57 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ducker Detective, LLC](https://appshunter.io/developer/1555299895) | [Chung-Wei Hung](https://appshunter.io/developer/1730641431) |

## What reviewers say

### Ducker Detective

[App page](https://appshunter.io/ios/app/ducker-detective/id1555299893)

Easily calculate anyone's age using their birth month and day. This tool can help you verify ages, play harmless pranks, or even predict baby birth dates based on due dates.

**Highlights:** Calculate age from birth month and day, Verify ages, Predict baby birth dates, Play age-related jokes, Age verification tool

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GIF subscription monthly | $0.99 | per month |
| Sticker subscription monthly | $0.99 | per month |
| StickerGIF subscription montly | $0.99 | per month |
| GIF subscription six month | $4.99 | per 6 months |
| Sticker subscription six month | $4.99 | per 6 months |
| StickerGIF Six-Month Plan | $4.99 | per 6 months |
| Ad-Free Subscription Yearly | $9.99 | per year |
| GIF subscription yearly | $9.99 | per year |
| Sticker subscription yearly | $9.99 | per year |
| StickerGIF subscription yearly | $9.99 | per year |


### Collateral Appraisal

[App page](https://appshunter.io/ios/app/collateral-appraisal/id6477914477)

**In-app purchases:** none


## Frequently asked questions

### Is Ducker Detective free?

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

### Is Collateral Appraisal free?

Collateral Appraisal is free to download, with no in-app purchases.

### Do Ducker Detective or Collateral Appraisal have ads?

Neither Ducker Detective nor Collateral Appraisal shows ads.

### Which is updated more often, Ducker Detective or Collateral Appraisal?

Ducker Detective ships an update every 2 months, and Collateral Appraisal every 2 months. Most recently, Ducker Detective was updated on November 3, 2026 and Collateral Appraisal on October 30, 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.*