# Phocus Mobile vs James Owl Calc

The clearest difference is review sentiment: James Owl Calc at 100% against Phocus Mobile's 47%. James Owl Calc also leads on rating (5.0 vs 4.6) and update cadence (weekly vs every 3 weeks). Phocus Mobile's advantage is ratings volume (522 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

James Owl Calc 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 4, so its average is the more settled of the two. Written reviews point the same way: 47% of Phocus Mobile's written reviews are positive against 100% of James Owl Calc's.

Phocus Mobile ships an update every 3 weeks, James Owl Calc weekly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Phocus Mobile | James Owl Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (522 ratings)](https://appshunter.io/ios/app/phocus-mobile/id1452280435/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/james-owl-calc/id6667115988/reviews)** |
| Number of ratings | **522** | 4 |
| Positive reviews | 46.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 470 MB | 32 MB |
| Requires iOS | 16.2 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hasselblad](https://appshunter.io/developer/411637577) | [James Zhen Yu](https://appshunter.io/developer/1723033163) |

## 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


### James Owl Calc

[App page](https://appshunter.io/ios/app/james-owl-calc/id6667115988)

This tool helps landscape photographers calculate precise camera settings for long exposure shots. It recommends ND filter combinations, aperture, and ISO based on your current settings and desired effect. Features include tutorials and camera-specific adjustments.

**Highlights:** Precise exposure calculations for ND filters, Reverse calculation mode, Smart adaptive technology for light changes, Built-in countdown timer with audio alerts, Camera-specific settings, Long exposure technique tutorials

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Phocus Mobile free?

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

### Is James Owl Calc free?

James Owl Calc is free to download, with no in-app purchases.

### Which has better reviews, Phocus Mobile or James Owl Calc?

James Owl Calc is rated higher. Phocus Mobile averages 4.6 out of 5 from 522 ratings, while James Owl Calc averages 5.0 from 4 ratings.

### Do Phocus Mobile or James Owl Calc have ads?

Neither Phocus Mobile nor James Owl Calc shows ads.

### Which is updated more often, Phocus Mobile or James Owl Calc?

Phocus Mobile ships an update every 3 weeks, and James Owl Calc weekly. Most recently, Phocus Mobile was updated on November 6, 2026 and James Owl Calc on November 4, 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.*