# Appio App vs Inbox Zero

The clearest difference is in-app purchases: Appio App at none against Inbox Zero's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. Appio App asks for nothing beyond the download.

Appio App ships an update fortnightly, Inbox Zero weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Appio App | Inbox Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/appio-app/id6736359699/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 54 MB | 35 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Appio Limited](https://appshunter.io/developer/1771615429) | [Inbox Zero Inc.](https://appshunter.io/developer/1880462164) |

## What reviewers say

### Appio App

[App page](https://appshunter.io/ios/app/appio-app/id6736359699)

This app allows users to access mobile features from services they subscribe to, such as real-time notifications and widgets. Businesses can quickly offer these mobile capabilities without custom app development.

**Highlights:** Real-time notifications, Service widgets, No app development required for businesses, Customer connectivity to services, Fast mobile feature deployment

**Features:** macOS Compatibility

**In-app purchases:** none


### Inbox Zero

[App page](https://appshunter.io/ios/app/inbox-zero-ai-email-assistant/id6759736561)

This email client offers a fast, offline-capable experience for Gmail and Outlook, featuring an AI assistant for managing your inbox. It allows for easy unsubscribing, smart inbox organization, and quick replies.

**Highlights:** AI email assistant, Offline access, Unsubscribe from senders, Split inbox by tabs, Quick swipe actions, Scheduled sending, Undo send

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inbox Zero Starter Monthly | $19.99 | per month |
| Inbox Zero Starter Annual | $199.99 | per year |


## Frequently asked questions

### Is Appio App free?

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

### Is Inbox Zero free?

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

### Do Appio App or Inbox Zero have ads?

Neither Appio App nor Inbox Zero shows ads.

### Which is updated more often, Appio App or Inbox Zero?

Appio App ships an update fortnightly, and Inbox Zero weekly. Most recently, Appio App was updated on November 4, 2026 and Inbox Zero on October 31, 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.*