# iFast vs NutriDiary

The clearest difference is in-app purchases: iFast at none against NutriDiary's 2. iFast also leads on update cadence (every 3 days vs every 10 days) and iOS requirement (15.1 vs 17.6). NutriDiary's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. NutriDiary sells 2 in-app purchases, starting at $5.99 per month. iFast asks for nothing beyond the download.

iFast ships an update every 3 days, NutriDiary every 10 days. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iFast | NutriDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (22 ratings)](https://appshunter.io/ios/app/ifast-simple-fast-tracker/id1670053693/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 10 days |
| Monetization | Ad-supported | — |
| Size | 62 MB | 15 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Manu Mehrotra](https://appshunter.io/developer/1607252474) | [立元 顾](https://appshunter.io/developer/1896753779) |

## What reviewers say

### iFast

[App page](https://appshunter.io/ios/app/ifast-simple-fast-tracker/id1670053693)

This app helps you track your fasting periods and monitor your progress towards your health goals. It supports various popular fasting methods, including circadian rhythm fasting and intermittent fasting schedules.

**Highlights:** Track fasting periods, Monitor progress, Support for popular fasting types, Circadian rhythm fasting, Intermittent fasting schedules, Custom prolonged fasts

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

**In-app purchases:** none


### NutriDiary

[App page](https://appshunter.io/ios/app/nutridiary/id6771206904)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is iFast free?

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

### Is NutriDiary free?

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

### Do iFast or NutriDiary have ads?

iFast shows ads; NutriDiary does not.

### Which is updated more often, iFast or NutriDiary?

iFast ships an update every 3 days, and NutriDiary every 10 days. Most recently, iFast was updated on September 22, 2026 and NutriDiary on September 10, 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.*