# Voltage Mail vs RISS

The clearest difference is review sentiment: RISS at 100% against Voltage Mail's 8%. RISS also leads on rating (5.0 vs 1.7) and monetization model (free vs freemium). Voltage Mail's advantage is ratings volume (737 vs 5). On price, update cadence, ads and in-app purchases there is nothing between them.

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

RISS holds the better App Store score, 5.0 against 1.7. That said, the two scores are not equally well evidenced: Voltage Mail has 737 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 8% of Voltage Mail's written reviews are positive against 100% of RISS's.

Voltage Mail ships an update every 2 months, RISS every 4 months. The most recent releases landed on September 22, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Voltage Mail | RISS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (737 ratings)](https://appshunter.io/ios/app/voltage-mail/id516444730/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/riss/id6470377372/reviews)** |
| Number of ratings | **737** | 5 |
| Positive reviews | 8.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Freemium | **Free** |
| Size | 24 MB | 15 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [OpenText](https://appshunter.io/developer/415355796) | [Regional Organized Crime Information Center, Inc.](https://appshunter.io/developer/1713548418) |

## What reviewers say

### Voltage Mail

[App page](https://appshunter.io/ios/app/voltage-mail/id516444730)

Securely read and compose encrypted emails on your mobile device. This app allows you to send and receive secure messages, integrating with your existing email accounts and offering robust security features for organizations.

**Highlights:** Read encrypted emails and attachments, Compose new secure email messages, Send and receive secure emails, Integrates with native email apps, Supports mobile policy restrictions, Simple self-registration and authentication

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Simple and effective email encryption
- 👍 Works well for external and internal users
- 👍 Easy to set up and use

**What reviewers complain about**

- 🐛 Doesn't work on iPhone or iPad
- 🐛 Crashes frequently
- 🐛 Confusing and unintuitive user experience
- 🐛 Unable to download or print attachments
- 🐛 Requires multiple steps to access messages

**Reported bugs**

- Login screen freezes
- Incompatible with older devices
- Frequent crashes and errors
- Unable to access or download messages

**Requested features**

- Add support for more mobile devices and operating systems
- Improve user interface and streamline the message access process
- Allow downloading and printing of attachments
- Better integration with popular email clients


### RISS

[App page](https://appshunter.io/ios/app/riss/id6470377372)

This app facilitates secure information sharing for law enforcement and criminal justice partners. It supports investigations, promotes officer safety, and provides access to key resources and systems. Users require an existing account and specific training to access its features.

**Highlights:** Secure information sharing, Facilitates criminal investigations, Promotes officer safety, Access to RISSIntel, Officer Safety Event Deconfliction System

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Mail free?

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

### Is RISS free?

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

### Which has better reviews, Voltage Mail or RISS?

RISS is rated higher. Voltage Mail averages 1.7 out of 5 from 737 ratings, while RISS averages 5.0 from 5 ratings.

### Do Voltage Mail or RISS have ads?

Neither Voltage Mail nor RISS shows ads.

### Which is updated more often, Voltage Mail or RISS?

Voltage Mail ships an update every 2 months, and RISS every 4 months. Most recently, Voltage Mail was updated on September 22, 2026 and RISS on August 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.*