# Tuta Mail vs SYSTEM // ZERO

The clearest difference is update cadence: SYSTEM // ZERO at every 3 days against Tuta Mail's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Tuta Mail sells 4 in-app purchases, starting at $3.99 per month and SYSTEM // ZERO sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Tuta Mail ships an update weekly, SYSTEM // ZERO every 3 days. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Tuta Mail | SYSTEM // ZERO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.7K ratings)](https://appshunter.io/ios/app/tuta-mail-secure-email/id922429609/reviews)** | — |
| Number of ratings | **3.7K** | — |
| Positive reviews | 65.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 85 MB | 57 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tutao GmbH](https://appshunter.io/developer/922429608) | [Raushan Nimatov](https://appshunter.io/developer/1888973196) |

## What reviewers say

### Tuta Mail

[App page](https://appshunter.io/ios/app/tuta-mail-secure-email/id922429609)

Secure your communications with an encrypted email service offering end-to-end encryption for emails and contacts. Enjoy features like anonymous registration, an ad-free experience, and a free encrypted calendar. Protect your privacy with a service developed and hosted in Germany.

**Highlights:** End-to-end encryption, Anonymous registration, Ad-free experience, Free encrypted calendar, Quantum-safe encryption, Open source code

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Revolutionary (Monthly) | $3.99 | per month |
| Legend (Monthly) | $9.99 | per month |
| Revolutionary (Yearly) | $39.99 | per year |
| Legend (Yearly) | $99.99 | per year |

**What reviewers like**

- 🔒 Secure email service
- 💡 Encrypted subject lines and contacts
- 👍 Clean and simple interface
- 🚀 Reliable and fast
- 🔒 End-to-end encryption

**What reviewers complain about**

- 🐛 Occasional app crashes
- 🐛 Inconsistent email delivery
- 🐛 Unreliable search functionality
- 🐛 Inability to export emails
- 🐛 Frequent app disconnections

**Reported bugs**

- Login credentials not working
- Accounts being locked or deleted unexpectedly
- Inability to restore deleted accounts
- Syncing issues between devices

**Requested features**

- Pinch-to-zoom functionality
- Improved email organization tools (labels, folders, etc.)
- Offline access mode
- Ability to set custom notification sounds
- Separate app for calendar and contacts


### SYSTEM // ZERO

[App page](https://appshunter.io/ios/app/system-zero/id6801821275)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knight Protocol System Pack | $9.99 | one-time |
| Solo Level Up System Pack | $9.99 | one-time |


## Frequently asked questions

### Is Tuta Mail free?

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

### Is SYSTEM // ZERO free?

SYSTEM // ZERO is free to download, with in-app purchases available.

### Do Tuta Mail or SYSTEM // ZERO have ads?

Neither Tuta Mail nor SYSTEM // ZERO shows ads.

### Which is updated more often, Tuta Mail or SYSTEM // ZERO?

Tuta Mail ships an update weekly, and SYSTEM // ZERO every 3 days. Most recently, Tuta Mail was updated on October 16, 2026 and SYSTEM // ZERO on October 10, 2026.

---

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