# Fastin vs Fastastic

The clearest difference is update cadence: Fastastic at daily against Fastin's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Fastin sells 10 in-app purchases, starting at $4.49 per 7 days and Fastastic sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Fastin ships an update every 3 weeks, Fastastic daily. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Fastin | Fastastic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (10K ratings)](https://appshunter.io/ios/app/fastin-intermittent-fasting/id1526416889/reviews)** | — |
| Number of ratings | **10K** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Subscription | — |
| Size | 243 MB | 57 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Bongmi Global Group](https://appshunter.io/developer/1526416891) | [JAMIE GLAZIER](https://appshunter.io/developer/1896133914) |

## What reviewers say

### Fastin

[App page](https://appshunter.io/ios/app/fastin-intermittent-fasting/id1526416889)

This app guides you through intermittent fasting for weight loss and improved health. It offers personalized plans, tracking tools for food, weight, water, sleep, and activity, along with educational courses on fasting and nutrition. Visualize your progress with detailed statistics to stay motivated on your journey.

**Highlights:** Personalized fasting plans, Food, weight, water, sleep, and activity tracking, Fasting and nutrition courses, Progress statistics and charts, Step-by-step fasting guidance, Meal journal for mindful eating

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastingPrime1Weekly | $4.49 | per 7 days |
| PrimeWeekly | $6.99 | per 7 days |
| Fasting Prime | $6.99 | per 7 days |
| PrimeMonthly | $9.99 | per month |
| PrimeWeekly | $9.99 | per 7 days |
| Fasting Prime | $9.99 | per month |
| PrimeQuarterly | $19.99 | per 3 months |
| Fasting Prime | $29.99 | per year |
| PrimeQuarterly | $29.99 | per 3 months |
| PrimeYearly | $49.99 | per year |

**What reviewers like**

- ⭐ Excellent app
- 👍 Easy to use
- 🔍 Helpful for weight loss
- 🔍 Motivational
- 🔍 Informative

**What reviewers complain about**

- 💰 Paid subscription required
- 🔍 Limited food database
- 🔍 Inaccurate calorie tracking
- 🔍 Confusing or unintuitive interface
- 🐛 Bugs and glitches

**Reported bugs**

- Fasting timer resets unexpectedly
- App crashes or freezes
- Sync and login issues
- Inability to edit past fasts

**Requested features**

- Ability to scan barcodes for nutrition info
- More recipes and meal planning options
- Integration with fitness trackers
- Customizable fasting schedules
- Better data tracking and analysis


### Fastastic

[App page](https://appshunter.io/ios/app/fastastic/id6776819627)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fastastic Pro | $5.99 | one-time |


## Frequently asked questions

### Is Fastin free?

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

### Is Fastastic free?

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

### Do Fastin or Fastastic have ads?

Neither Fastin nor Fastastic shows ads.

### Which is updated more often, Fastin or Fastastic?

Fastin ships an update every 3 weeks, and Fastastic daily. Most recently, Fastin was updated on November 2, 2026 and Fastastic 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.*