# Image Upsample vs FourScan

The clearest difference is in-app purchases: FourScan at none against Image Upsample's 4. FourScan also leads on ads (none vs shown) and update cadence (every 10 days vs every 2 months). Image Upsample's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 16.0). On price there is nothing between them.

Both are free to download. Image Upsample sells 4 one-off in-app purchases. FourScan asks for nothing beyond the download.

Image Upsample ships an update every 2 months, FourScan every 10 days. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Image Upsample | FourScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/image-upsample/id1556617503/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [子尧 纵](https://appshunter.io/developer/1551530272) | [satoshi amasaki](https://appshunter.io/developer/1891268722) |

## What reviewers say

### Image Upsample

[App page](https://appshunter.io/ios/app/image-upsample/id1556617503)

Enhance the clarity of your mobile photos by increasing their resolution. Simply select an image and tap a button to automatically process and magnify it, making details sharper and more visible.

**Highlights:** Magnify image resolution, Automatic processing, Improve image clarity, Supports selected resolutions up to 1200*1200, AI-powered enhancement

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Energy Ore | $0.99 | one-time |
| 10 Energy Ore | $2.99 | one-time |
| 36 Energy Ore | $8.99 | one-time |
| 120 Energy Ore | $27.99 | one-time |


### FourScan

[App page](https://appshunter.io/ios/app/fourscan-spy-detector/id6761895107)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Image Upsample free?

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

### Is FourScan free?

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

### Do Image Upsample or FourScan have ads?

Image Upsample shows ads; FourScan does not.

### Which is updated more often, Image Upsample or FourScan?

Image Upsample ships an update every 2 months, and FourScan every 10 days. Most recently, Image Upsample was updated on October 14, 2026 and FourScan on September 29, 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.*