# Smart Interphone vs Email_Watch

The clearest difference is in-app purchases: Smart Interphone at none against Email_Watch's 4. Smart Interphone also leads on iOS requirement (13.0 vs 15.1). Email_Watch's advantage is update cadence (every 2 days vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Email_Watch sells 4 in-app purchases, starting at $9.99 per month. Smart Interphone asks for nothing beyond the download.

Smart Interphone ships an update every 7 months, Email_Watch every 2 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Smart Interphone | Email_Watch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Size | 137 MB | 50 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tzu-Lung Chang](https://appshunter.io/developer/623730215) | [Doug Davis](https://appshunter.io/developer/1448712624) |

## What reviewers say

### Smart Interphone

[App page](https://appshunter.io/ios/app/smart-interphone/id6478376348)

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

**In-app purchases:** none


### Email_Watch

[App page](https://appshunter.io/ios/app/email-watch/id6758066444)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $9.99 | per month |
| EmailWAtch Pro | $29.99 | per month |
| EmailWatch Business | $49.99 | per month |
| EmailWatch Enterprise | $99.99 | per month |


## Frequently asked questions

### Is Smart Interphone free?

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

### Is Email_Watch free?

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

### Do Smart Interphone or Email_Watch have ads?

Neither Smart Interphone nor Email_Watch shows ads.

### Which is updated more often, Smart Interphone or Email_Watch?

Smart Interphone ships an update every 7 months, and Email_Watch every 2 days. Most recently, Smart Interphone was updated on October 27, 2026 and Email_Watch on October 28, 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.*