# SIUI PIE vs Photon Mobile

The clearest difference is price: Photon Mobile at Free against SIUI PIE's $19.99. Photon Mobile also leads on update cadence (every 2 months vs every 19 months) and device support (3 vs 1). SIUI PIE's advantage is iOS requirement (9.0 vs 15.0). On ads and in-app purchases there is nothing between them.

Photon Mobile is free to download; SIUI PIE costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SIUI PIE ships an update every 19 months, Photon Mobile every 2 months. The most recent releases landed on May 15, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SIUI PIE | Photon Mobile |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[3.8 (8 ratings)](https://appshunter.io/ios/app/photon-mobile/id627123380/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 5 MB | 29 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [Photon Medical Communications, LLC](https://appshunter.io/developer/627123383) |

## What reviewers say

### SIUI PIE

[App page](https://appshunter.io/ios/app/siui-pie-3-hd/id434350466)

**Features:** macOS Compatibility

**In-app purchases:** none


### Photon Mobile

[App page](https://appshunter.io/ios/app/photon-mobile/id627123380)

This app connects healthcare practices with on-call specialists for real-time communication. It facilitates secure sharing of medical information, including images and test results, to improve patient care and outcomes.

**Highlights:** Real-time on-call specialist connection, Proprietary messaging platform, Secure medical information sharing, Patient care improvement, Access to ER notes and test results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIUI PIE free?

SIUI PIE costs $19.99, with no in-app purchases.

### Is Photon Mobile free?

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

### Do SIUI PIE or Photon Mobile have ads?

Neither SIUI PIE nor Photon Mobile shows ads.

### Which is updated more often, SIUI PIE or Photon Mobile?

SIUI PIE ships an update every 19 months, and Photon Mobile every 2 months. Most recently, SIUI PIE was updated on May 15, 2026 and Photon Mobile on October 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*