# Zone Diet vs Alertify

The clearest difference is price: Alertify at Free against Zone Diet's $3.99. Alertify also leads on update cadence (every 6 days vs fortnightly). Zone Diet's advantage is iOS requirement (14.3 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Alertify is free to download; Zone Diet costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zone Diet ships an update fortnightly, Alertify every 6 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Zone Diet | Alertify |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.5 (22 ratings)](https://appshunter.io/ios/app/zone-diet/id574706249/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Free | — |
| Size | 54 MB | 14 MB |
| Requires iOS | **14.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gianni Etzi](https://appshunter.io/developer/944267931) | [Sertus Group SA](https://appshunter.io/developer/1704980209) |

## What reviewers say

### Zone Diet

[App page](https://appshunter.io/ios/app/zone-diet/id574706249)

This app helps users follow the Zone Diet by automatically creating meals based on Barry Sears' guidelines. It calculates personal body composition and daily block needs, allowing users to select foods and have portion sizes automatically determined. Users can also access a shared meal database and track their food intake.

**Highlights:** Automatic meal creation, Body composition calculation, Daily block calculation, Food selection with automatic portion sizing, Shared meal database, Food record and tracking, Barcode scanning for food entry

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

**In-app purchases:** none


### Alertify

[App page](https://appshunter.io/ios/app/alertify/id6463781481)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zone Diet free?

Zone Diet costs $3.99, with no in-app purchases.

### Is Alertify free?

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

### Do Zone Diet or Alertify have ads?

Neither Zone Diet nor Alertify shows ads.

### Which is updated more often, Zone Diet or Alertify?

Zone Diet ships an update fortnightly, and Alertify every 6 days. Most recently, Zone Diet was updated on October 22, 2026 and Alertify on October 24, 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.*