# Fast AI vs Fasting Tracker App by Numify

The clearest difference is review sentiment: Fasting Tracker App by Numify at 61% against Fast AI's 7%. Fasting Tracker App by Numify also leads on rating (4.7 vs 4.3) and ratings volume (5.9K vs 120). Fast AI's advantage is iOS requirement (14.0 vs 17.5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fast AI sells 5 in-app purchases, starting at $5.99 per 7 days and Fasting Tracker App by Numify sells 19 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fasting Tracker App by Numify holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Fasting Tracker App by Numify has 5.9K ratings behind it against 120, so its average is the more settled of the two. Written reviews point the same way: 7% of Fast AI's written reviews are positive against 61% of Fasting Tracker App by Numify's.

Fast AI ships an update every 2 weeks, Fasting Tracker App by Numify monthly. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Fast AI | Fasting Tracker App by Numify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (120 ratings)](https://appshunter.io/ios/app/fast-ai-intermittent-fasting/id1629661646/reviews) | **[4.7 (5.9K ratings)](https://appshunter.io/ios/app/fasting-tracker-app-by-numify/id6470460463/reviews)** |
| Number of ratings | 120 | **5.9K** |
| Positive reviews | 7.1% of reviews | **60.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 101 MB | 158 MB |
| Requires iOS | **14.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Kiryl Salavei](https://appshunter.io/developer/1033680093) | [Municorn Limited](https://appshunter.io/developer/380984285) |

## What reviewers say

### Fast AI

[App page](https://appshunter.io/ios/app/fast-ai-intermittent-fasting/id1629661646)

This app helps users achieve weight loss and improve well-being through intermittent fasting. It provides tracking, scheduling, and detailed analytics to guide users through various fasting plans. The app aims to make fasting a natural and effective part of a healthy lifestyle.

**Highlights:** Intermittent fasting tracker, Weight monitoring, Fasting and food window notifications, Detailed analytics, Multiple fasting schemes (e.g., 16/8), Fasting schedule, Apple Health weight sync

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple intermittent fasting | $5.99 | per 7 days |
| Intermittent Fasting 1 Month | $12.99 | per month |
| Personal Fast Program 3 Month | $19.99 | per 3 months |
| Intermittent Fasting + Tracker | $35.99 | per year |
| Intermittent Fasting Annual | $49.99 | per year |


### Fasting Tracker App by Numify

[App page](https://appshunter.io/ios/app/fasting-tracker-app-by-numify/id6470460463)

This app guides users through intermittent fasting for weight loss and improved health. It offers simple tracking, personalized plans, and smart notifications to help establish healthy habits without restrictive diets.

**Highlights:** Intermittent fasting guidance, Weight loss without restrictive diets, OMAD and 16/8 timer options, Effortless tracking, Smart notifications, Personalized fasting plans

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fasting Plus | $3.99 | per 7 days |
| Fasting Plus | $3.99 | per 7 days |
| Fasting Plus | $4.99 | per 7 days |
| Premium features | $5.99 | per 7 days |
| Fasting Plus | $5.99 | per 7 days |
| Fasting Plus | $5.99 | per 7 days |
| Lose Weight with a Fasting App | $5.99 | per 7 days |
| Plus | $9.99 | per 7 days |
| Premium features | $14.99 | per month |
| Fasting Plus | $19.99 | per 3 months |
| Plus | $29.99 | per 3 months |
| Fast Tracker for Fasting Clock | $29.99 | per 3 months |
| Fasting Special Offer | $39.99 | per year |
| Fasting Plus | $49.99 | per year |
| Fasting Plus | $49.99 | per year |
| Premium features | $59.99 | per year |
| Premium features | $59.99 | per year |
| Fasting Tracker & Fast Timer | $69.99 | per year |
| Fasting Tracker & Fast Timer | $69.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for beginners
- 💡 Customizable fasting schedules
- 🚀 Convenient and portable
- 👍 Effective for weight loss and health

**What reviewers complain about**

- 🔒 Paywall for basic features
- 🐛 Bugs and glitches
- 🔒 Deceptive free trial
- 🐛 Unreliable data tracking
- 🔒 Expensive subscription

**Reported bugs**

- Incorrect date and time display
- Inability to edit personal information
- Inconsistent data saving and syncing
- Frequent crashes and app not opening

**Requested features**

- Add 18:6 fasting option
- Include meal logging and nutrition tracking
- Provide more fasting protocols and customization
- Improve notifications and reminders


## Frequently asked questions

### Is Fast AI free?

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

### Is Fasting Tracker App by Numify free?

Fasting Tracker App by Numify is free to download, with in-app purchases available.

### Which has better reviews, Fast AI or Fasting Tracker App by Numify?

Fasting Tracker App by Numify is rated higher. Fast AI averages 4.3 out of 5 from 120 ratings, while Fasting Tracker App by Numify averages 4.7 from 5.9K ratings.

### Do Fast AI or Fasting Tracker App by Numify have ads?

Neither Fast AI nor Fasting Tracker App by Numify shows ads.

### Which is updated more often, Fast AI or Fasting Tracker App by Numify?

Fast AI ships an update every 2 weeks, and Fasting Tracker App by Numify monthly. Most recently, Fast AI was updated on October 20, 2026 and Fasting Tracker App by Numify on October 27, 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.*