# When Did? vs Image Video PDF Compressor

The clearest difference is price: Image Video PDF Compressor at Free against When Did?'s $0.99. Image Video PDF Compressor also leads on rating (4.5 vs 3.8) and review sentiment (100% vs 67%). When Did?'s advantage is in-app purchases (none vs 6). On update cadence, ads, device support and iOS requirement there is nothing between them.

Image Video PDF Compressor is free to download; When Did? costs $0.99 up front. Image Video PDF Compressor sells 6 in-app purchases, starting at $1.99 per 7 days. When Did? asks for nothing beyond the download.

Image Video PDF Compressor holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 4 and 16 respectively. Written reviews point the same way: 67% of When Did?'s written reviews are positive against 100% of Image Video PDF Compressor's.

When Did? ships an update every 2 months, Image Video PDF Compressor every 5 weeks. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | When Did? | Image Video PDF Compressor |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/when-did/id1673184254/reviews) | **[4.5 (16 ratings)](https://appshunter.io/ios/app/image-video-pdf-compressor/id6752115419/reviews)** |
| Number of ratings | 4 | **16** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 72 MB |
| Requires iOS | **16.0** | 17 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jimmy Bosse](https://appshunter.io/developer/1673184436) | [Youssef Ismaili](https://appshunter.io/developer/1696488085) |

## What reviewers say

### When Did?

[App page](https://appshunter.io/ios/app/when-did/id1673184254)

Effortlessly track the last time you performed any desired activity. Customize your activity list with unique colors and icons, and use timestamps to know exactly when each task was last completed, bringing order to forgetfulness.

**Highlights:** Track last performed activities, Customizable activity list, Color-coded entries, Icon selection for activities, Timestamp logging, Simple and intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Image Video PDF Compressor

[App page](https://appshunter.io/ios/app/image-video-pdf-compressor/id6752115419)

Effortlessly reduce the file size of images, videos, and PDFs while preserving high quality. Optimize media for storage, web, or sharing with intuitive tools and batch processing.

**Highlights:** Smart image compression with quality control, Video compression with codec and resolution adjustment, PDF compression with searchable text preservation, Batch processing for multiple files, Compression history and statistics, Metadata preservation or stripping

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $1.99 | per 7 days |
| Compressor Pro Weekly | $4.99 | per 7 days |
| Full Access | $9.99 | per year |
| Compressor Pro Yearly | $29.99 | per year |
| Ulimited access | $19.99 | one-time |
| Compressor Pro | $49.99 | one-time |


## Frequently asked questions

### Is When Did? free?

When Did? costs $0.99, with no in-app purchases.

### Is Image Video PDF Compressor free?

Image Video PDF Compressor is free to download, with in-app purchases available.

### Which has better reviews, When Did? or Image Video PDF Compressor?

Image Video PDF Compressor is rated higher. When Did? averages 3.8 out of 5 from 4 ratings, while Image Video PDF Compressor averages 4.5 from 16 ratings.

### Do When Did? or Image Video PDF Compressor have ads?

Neither When Did? nor Image Video PDF Compressor shows ads.

### Which is updated more often, When Did? or Image Video PDF Compressor?

When Did? ships an update every 2 months, and Image Video PDF Compressor every 5 weeks. Most recently, When Did? was updated on October 20, 2026 and Image Video PDF Compressor on October 8, 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.*