# Prime vs Fast

Prime and Fast both sit at 4.6 stars, but that hides the real split: 75% of Fast's written reviews are positive against 43% of Prime's. Fast also leads on device support (3 vs 1). Prime's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Prime sells 10 in-app purchases, starting at $9.99 per month and Fast sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Prime against 4.7 for Fast. Both are backed by a comparable volume of ratings — 4.6K and 3.3K respectively. Written reviews are what separate them: 43% of Prime's written reviews are positive against 75% of Fast's.

Prime ships an update every 3 weeks, Fast every 2 months. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Prime | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (4.6K ratings)](https://appshunter.io/ios/app/prime-intermittent-fasting/id1534126998/reviews) | **[4.7 (3.3K ratings)](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691/reviews)** |
| Number of ratings | **4.6K** | 3.3K |
| Positive reviews | 42.9% of reviews | **74.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 323 MB | 116 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [Sergei Sharov](https://appshunter.io/developer/1636640394) | [Maxima Apps](https://appshunter.io/developer/1153277200) |

## What reviewers say

### Prime

[App page](https://appshunter.io/ios/app/prime-intermittent-fasting/id1534126998)

This app offers a tailored intermittent fasting experience for women, featuring a fasting tracker, weight monitoring, and personalized guidance. It helps users achieve fitness goals, manage weight, and understand the health benefits of fasting with a focus on women's specific needs.

**Highlights:** Fasting tracker (16:8 protocol), Weight tracker, Water tracker with reminders, Personalized daily recommendations, Body status tracking, Fasting/eating interval stats, Community club

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPECIAL DISCOUNT OFFER | $9.99 | per month |
| Premium Subscription | $14.99 | per month |
| Premium Subscription | $19.99 | per month |
| Premium Subscription | $24.99 | per 3 months |
| Premium Subscription | $29.99 | per 3 months |
| Premium Subscription | $39.99 | per year |
| Premium Subscriptions | $39.99 | per 3 months |
| Premium Subscription | $49.99 | per year |
| Premium Subscription | $59.99 | per year |
| Premium Subscription | $69.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful for weight loss
- 💡 Useful visual references
- 👍 Responsive customer support
- 👍 Motivating progress tracking

**What reviewers complain about**

- 💰 Expensive subscription
- 🐛 Buggy and laggy
- 🔍 Lacking in-depth features
- 💰 Misleading about free options
- 🗣️ Poor chat functionality

**Reported bugs**

- Lost user progress and data
- Subscription issues and lack of refunds
- Unresponsive start/stop fasting buttons
- Incorrect weight and fasting time tracking

**Requested features**

- Sync with fitness trackers
- More varied meal plans and recipes
- Ability to manually adjust fasting times
- Customizable notifications and reminders
- Integration with calorie tracking


### Fast

[App page](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691)

This app helps you track intermittent fasting routines, monitor progress, and analyze health data. It offers educational content, motivational challenges, and a journal to record your feelings. Connect with friends for support and motivation on your wellness journey.

**Highlights:** Fasting timer and tracker, Progress analytics and history, Educational 'Know It' section, Motivational challenges and trophies, Mood tracker and journal, Health app integration (steps), Fasting buddy feature

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast Premium Monthly | $4.99 | per month |
| Fasting Monthly | $14.99 | per month |
| Fasting Annually | $19.99 | per year |
| Fasting Premium | $27.99 | per 3 months |
| Fast Premium Yearly | $29.99 | per year |
| Fasting Premium Yearly | $39.99 | per year |
| Fasting One Time Special Offer | $19.99 | one-time |
| Fasting Pro | $49.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for weight loss
- 👍 Motivating with trophies
- 👍 Customizable fasting plans
- 👍 Integrates with health apps

**What reviewers complain about**

- 🐛 Timer issues/inaccuracies
- 🐛 Inability to edit fasting times
- 🐛 Syncing/data saving problems
- 🐛 Crashes and glitches
- 🔍 Lacking advanced features

**Reported bugs**

- Timer not accurately recording fasting times
- Inability to update weight in app
- Crashing when trying to view friend's status

**Requested features**

- Option to edit fasting start/end times
- More detailed analytics and progress tracking
- Improved syncing and data saving reliability
- Expanded customization options


## Frequently asked questions

### Is Prime free?

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

### Is Fast free?

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

### Which has better reviews, Prime or Fast?

Fast is rated higher. Prime averages 4.6 out of 5 from 4.6K ratings, while Fast averages 4.7 from 3.3K ratings.

### Do Prime or Fast have ads?

Neither Prime nor Fast shows ads.

### Which is updated more often, Prime or Fast?

Prime ships an update every 3 weeks, and Fast every 2 months. Most recently, Prime was updated on October 27, 2026 and Fast on October 29, 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.*