# Sizzit vs Diabetes by Heart

The clearest difference is in-app purchases: Diabetes by Heart at none against Sizzit's 1. Diabetes by Heart also leads on update cadence (monthly vs every 24 months). Sizzit's advantage is iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Sizzit sells 1 in-app purchase, starting at $23.49 per year. Diabetes by Heart asks for nothing beyond the download.

Sizzit ships an update every 24 months, Diabetes by Heart monthly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sizzit | Diabetes by Heart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 24 months | **Monthly** |
| Size | 25 MB | 34 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sizzit](https://appshunter.io/developer/568406071) | [Fitwiz](https://appshunter.io/developer/1648156463) |

## What reviewers say

### Sizzit

[App page](https://appshunter.io/ios/app/sizzit/id568405688)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sizzit Pro | $23.49 | per year |


### Diabetes by Heart

[App page](https://appshunter.io/ios/app/diabetes-by-heart/id6443661535)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sizzit free?

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

### Is Diabetes by Heart free?

Diabetes by Heart is free to download, with no in-app purchases.

### Do Sizzit or Diabetes by Heart have ads?

Neither Sizzit nor Diabetes by Heart shows ads.

### Which is updated more often, Sizzit or Diabetes by Heart?

Sizzit ships an update every 24 months, and Diabetes by Heart monthly. Most recently, Sizzit was updated on October 26, 2026 and Diabetes by Heart on October 25, 2026.

---

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