# ISEC7 MAIL for Citrix vs Upstream

The clearest difference is in-app purchases: Upstream at none against ISEC7 MAIL for Citrix's 1. Upstream also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ISEC7 MAIL for Citrix sells 1 in-app purchase, starting at $32.99 per year. Upstream asks for nothing beyond the download.

ISEC7 MAIL for Citrix ships an update monthly, Upstream every 2 weeks. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | ISEC7 MAIL for Citrix | Upstream |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/upstream-email/id6751403722/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 84 MB | 87 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ISEC7 Group](https://appshunter.io/developer/466418066) | [Upstream Labs](https://appshunter.io/developer/1834893204) |

## What reviewers say

### ISEC7 MAIL for Citrix

[App page](https://appshunter.io/ios/app/isec7-mail-for-citrix/id1078891024)

**Features:** Apple Wallet

**In-app purchases (1)**

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


### Upstream

[App page](https://appshunter.io/ios/app/upstream-email/id6751403722)

This AI-powered inbox automatically organizes emails, drafts replies in your unique writing style, and sends follow-ups. It learns your workflow to minimize distractions and ensure no important messages are missed.

**Highlights:** AI email triaging, Personalized draft writing, Automated follow-ups, Self-organizing inbox, Learns user workflow

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

**In-app purchases:** none


## Frequently asked questions

### Is ISEC7 MAIL for Citrix free?

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

### Is Upstream free?

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

### Do ISEC7 MAIL for Citrix or Upstream have ads?

Neither ISEC7 MAIL for Citrix nor Upstream shows ads.

### Which is updated more often, ISEC7 MAIL for Citrix or Upstream?

ISEC7 MAIL for Citrix ships an update monthly, and Upstream every 2 weeks. Most recently, ISEC7 MAIL for Citrix was updated on October 11, 2026 and Upstream on October 2, 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.*