# Voltage Mail vs DeepNet MobileID (OOBA)

The clearest difference is rating: DeepNet MobileID (OOBA) at 3.2 against Voltage Mail's 1.7. DeepNet MobileID (OOBA) also leads on monetization model (free vs freemium) and review sentiment (17% vs 8%). Voltage Mail's advantage is ratings volume (736 vs 13) and update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and device support there is nothing between them.

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

DeepNet MobileID (OOBA) holds the better App Store score, 3.2 against 1.7. That said, the two scores are not equally well evidenced: Voltage Mail has 736 ratings behind it against 13, 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 17% of DeepNet MobileID (OOBA)'s.

Voltage Mail ships an update every 2 months, DeepNet MobileID (OOBA) every 5 months. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Voltage Mail | DeepNet MobileID (OOBA) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (736 ratings)](https://appshunter.io/ios/app/voltage-mail/id516444730/reviews) | **[3.2 (13 ratings)](https://appshunter.io/ios/app/deepnet-mobileid-ooba/id898300378/reviews)** |
| Number of ratings | **736** | 13 |
| Positive reviews | 8.1% of reviews | **16.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Freemium | **Free** |
| Size | 24 MB | 19 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OpenText](https://appshunter.io/developer/415355796) | [Deepnet Security](https://appshunter.io/developer/324316592) |

## 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


### DeepNet MobileID (OOBA)

[App page](https://appshunter.io/ios/app/deepnet-mobileid-ooba/id898300378)

This app transforms your iPhone into a security token for generating one-time passwords. It replaces physical keyfobs, offering a convenient and free solution for multi-factor authentication for business applications. It is OATH compliant and developed by authentication experts.

**Highlights:** Generates one-time passwords (OTP), Converts iPhone into a security token, Replaces physical keyfobs, Supports multi-factor authentication, OATH compliant

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Mail free?

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

### Is DeepNet MobileID (OOBA) free?

DeepNet MobileID (OOBA) is free to download, with no in-app purchases.

### Which has better reviews, Voltage Mail or DeepNet MobileID (OOBA)?

DeepNet MobileID (OOBA) is rated higher. Voltage Mail averages 1.7 out of 5 from 736 ratings, while DeepNet MobileID (OOBA) averages 3.2 from 13 ratings.

### Do Voltage Mail or DeepNet MobileID (OOBA) have ads?

Neither Voltage Mail nor DeepNet MobileID (OOBA) shows ads.

### Which is updated more often, Voltage Mail or DeepNet MobileID (OOBA)?

Voltage Mail ships an update every 2 months, and DeepNet MobileID (OOBA) every 5 months. Most recently, Voltage Mail was updated on October 21, 2026 and DeepNet MobileID (OOBA) on October 20, 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.*