# Phocus Mobile vs RoboTou Stacker

The clearest difference is review sentiment: RoboTou Stacker at 100% against Phocus Mobile's 46%. RoboTou Stacker also leads on rating (5.0 vs 4.6) and update cadence (every 5 days vs every 2 weeks). Phocus Mobile's advantage is in-app purchases (none vs 2) and ratings volume (522 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RoboTou Stacker sells 2 in-app purchases, starting at $5.00 per year. Phocus Mobile asks for nothing beyond the download.

RoboTou Stacker holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Phocus Mobile has 522 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of Phocus Mobile's written reviews are positive against 100% of RoboTou Stacker's.

Phocus Mobile ships an update every 2 weeks, RoboTou Stacker every 5 days. The most recent releases landed on October 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Phocus Mobile | RoboTou Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (522 ratings)](https://appshunter.io/ios/app/phocus-mobile/id1452280435/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/robotou-stacker/id6761755082/reviews)** |
| Number of ratings | **522** | 1 |
| Positive reviews | 46.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 435 MB | 88 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hasselblad](https://appshunter.io/developer/411637577) | [振国 吴](https://appshunter.io/developer/1739933647) |

## What reviewers say

### Phocus Mobile

[App page](https://appshunter.io/ios/app/phocus-mobile/id1452280435)

Edit and manage high-resolution RAW images from Hasselblad cameras on your mobile device. Experience natural color reproduction and advanced noise reduction with HDR capabilities for stunning detail and light.

**Highlights:** HNCS HDR image display, editing, and export, Full quality RAW editing, Multi-format RAW/JPG/HEIF download, TIFF generation for lossless editing, Camera control of capture parameters, Download/delete images from camera

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Blazing fast WiFi connectivity and file transfer speeds
- 🎨 Superior color rendering and Hasselblad Natural Color Solution (HNCS)
- 📱 Excellent remote camera control and tethered shooting capabilities
- 🖼️ Clean, intuitive user interface design
- ⚡ Quick connection to camera and effortless browsing of large files

**What reviewers complain about**

- 🐛 Frequent crashes and freezes, especially on iPad
- 🔌 USB-C connectivity issues with newer iPad models
- 📦 Limited storage options for large RAW files on mobile devices
- 🔗 Unreliable WiFi connection stability
- ⚠️ Inconsistent app performance across updates

**Reported bugs**

- App crashes when opening high ISO files
- Photos disappear after update or when selecting for processing
- Export fails for multiple images, erasing original capture date/time
- Images not available in library despite camera connection
- App crashes on iPad Pro with M1/M2 chips

**Requested features**

- Import photos from external SSD or USB storage
- Manual color control for watermarks
- Support for multiple camera connections
- Layer masking and adjustment layers
- Delayed shutter release/self-timer functionality


### RoboTou Stacker

[App page](https://appshunter.io/ios/app/robotou-stacker/id6761755082)

Combine multiple photos directly on your device for enhanced results. This app offers automatic masking and alignment for various photography needs, including starry skies and light trails. Process your images locally without needing an account or cloud sync.

**Highlights:** On-device image stacking, Automatic masking and alignment, Starry sky stacking, Star trail stacking, Car-light trail stacking, Local preview generation, Export to Photos

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoboTou Stacker Pro Annual | $5.00 | per year |
| RoboTou Stacker Pro Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Phocus Mobile free?

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

### Is RoboTou Stacker free?

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

### Which has better reviews, Phocus Mobile or RoboTou Stacker?

RoboTou Stacker is rated higher. Phocus Mobile averages 4.6 out of 5 from 522 ratings, while RoboTou Stacker averages 5.0 from 1 ratings.

### Do Phocus Mobile or RoboTou Stacker have ads?

Neither Phocus Mobile nor RoboTou Stacker shows ads.

### Which is updated more often, Phocus Mobile or RoboTou Stacker?

Phocus Mobile ships an update every 2 weeks, and RoboTou Stacker every 5 days. Most recently, Phocus Mobile was updated on October 10, 2026 and RoboTou Stacker 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.*