# AllyFast vs Fasty

The clearest difference is review sentiment: AllyFast at 100% against Fasty's 8%. AllyFast also leads on in-app purchases (none vs 3) and update cadence (monthly vs every 9 months). Fasty's advantage is price (Free vs $0.99) and ratings volume (1.5K vs 18). On ads and device support there is nothing between them.

Fasty is free to download; AllyFast costs $0.99 up front. Fasty sells 3 in-app purchases, starting at $9.99 per 7 days. AllyFast asks for nothing beyond the download.

AllyFast holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Fasty has 1.5K ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 100% of AllyFast's written reviews are positive against 8% of Fasty's.

AllyFast ships an update monthly, Fasty every 9 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | AllyFast | Fasty |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (18 ratings)](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202/reviews)** | [4.7 (1.5K ratings)](https://appshunter.io/ios/app/fasty-intermittent-fasting/id6744280079/reviews) |
| Number of ratings | 18 | **1.5K** |
| Positive reviews | **100.0% of reviews** | 7.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 5 MB |
| Requires iOS | 18.2 | **16.5** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wonseok Lee](https://appshunter.io/developer/1801568032) | [Gabe Rogers](https://appshunter.io/developer/1584630702) |

## What reviewers say

### AllyFast

[App page](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202)

This app offers a streamlined fasting timer with a clean, SwiftUI-based interface. It prioritizes user privacy with local data storage and provides science-based insights into fasting stages. Enjoy a clutter-free, ad-free experience with no subscriptions.

**Highlights:** SwiftUI fasting timer, Local data storage, No subscriptions or ads, Fasts up to 72 hours, Editable fasting history, Science-based fasting insights

**Features:** macOS Compatibility

**In-app purchases:** none


### Fasty

[App page](https://appshunter.io/ios/app/fasty-intermittent-fasting/id6744280079)

This app offers a straightforward and privacy-focused way to track intermittent fasting. It provides tools for timing fasts, monitoring weight and BMI, and maintaining progress streaks without requiring sign-up or displaying ads.

**Highlights:** One-tap fasting timer, Multiple fasting programs, Custom fast durations, Weight tracking, BMI tracking, Progress and streak tracking, Ad-free experience

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Monthly | $24.99 | per month |
| Annual | $34.99 | per year |


## Frequently asked questions

### Is AllyFast free?

AllyFast costs $0.99, with no in-app purchases.

### Is Fasty free?

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

### Which has better reviews, AllyFast or Fasty?

AllyFast is rated higher. AllyFast averages 5.0 out of 5 from 18 ratings, while Fasty averages 4.7 from 1.5K ratings.

### Do AllyFast or Fasty have ads?

Neither AllyFast nor Fasty shows ads.

### Which is updated more often, AllyFast or Fasty?

AllyFast ships an update monthly, and Fasty every 9 months. Most recently, AllyFast was updated on October 16, 2026 and Fasty on October 17, 2026.

---

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