# ISEC7 MAIL vs Cio

The clearest difference is update cadence: Cio at daily against ISEC7 MAIL's monthly. ISEC7 MAIL's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ISEC7 MAIL sells 1 in-app purchase, starting at $32.99 per year and Cio sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ISEC7 MAIL ships an update monthly, Cio daily. The most recent releases landed on September 15, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ISEC7 MAIL | Cio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Freemium | — |
| Size | 74 MB | 2 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ISEC7 Group](https://appshunter.io/developer/466418066) | [ADRIAN DANIEL CIOC](https://appshunter.io/developer/1818602503) |

## What reviewers say

### ISEC7 MAIL

[App page](https://appshunter.io/ios/app/isec7-mail/id1045017598)

Securely access and manage Microsoft Exchange and Office 365 email, contacts, and calendars from your mobile device. Offers features like mailbox delegation, public folder integration, and S/MIME encryption for sensitive information.

**Highlights:** Secure access to Exchange/Office 365, Contact, calendar, task, and note management, Mailbox delegation, Public folder integration, Certificate-based authentication, S/MIME encrypted and signed emails

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $32.99 | per year |


### Cio

[App page](https://appshunter.io/ios/app/cio-tasks-notes-and-calendar/id6756233206)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cio Pro Monthly | $2.99 | per month |
| Cio Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is ISEC7 MAIL free?

ISEC7 MAIL is free to download, with in-app purchases available.

### Is Cio free?

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

### Do ISEC7 MAIL or Cio have ads?

Neither ISEC7 MAIL nor Cio shows ads.

### Which is updated more often, ISEC7 MAIL or Cio?

ISEC7 MAIL ships an update monthly, and Cio daily. Most recently, ISEC7 MAIL was updated on September 15, 2026 and Cio on September 16, 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.*