# Keto Diet App － Carb Tracker vs Fast

The clearest difference is update cadence: Keto Diet App － Carb Tracker at every 2 weeks against Fast's every 2 months. Keto Diet App － Carb Tracker also leads on ratings volume (82K vs 3.3K) and iOS requirement (15.0 vs 18.6). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Keto Diet App － Carb Tracker sells 7 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 — 4.7 for Keto Diet App － Carb Tracker against 4.7 for Fast. That said, the two scores are not equally well evidenced: Keto Diet App － Carb Tracker has 82K ratings behind it against 3.3K, so its average is the more settled of the two. Written reviews are what separate them: 68% of Keto Diet App － Carb Tracker's written reviews are positive against 75% of Fast's.

Keto Diet App － Carb Tracker ships an update every 2 weeks, Fast every 2 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Keto Diet App － Carb Tracker | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (82K ratings)](https://appshunter.io/ios/app/keto-diet-app-carb-tracker/id1406879426/reviews)** | [4.7 (3.3K ratings)](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691/reviews) |
| Number of ratings | **82K** | 3.3K |
| Positive reviews | 68.1% of reviews | **74.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 165 MB | 116 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 12+ |
| Developer | [FJOR NUTRITION, INC.](https://appshunter.io/developer/1406879425) | [Maxima Apps](https://appshunter.io/developer/1153277200) |

## What reviewers say

### Keto Diet App － Carb Tracker

[App page](https://appshunter.io/ios/app/keto-diet-app-carb-tracker/id1406879426)

This app acts as your personal keto coach, offering a powerful macro tracker with hundreds of recipes and diet tips. Easily log food using voice recognition or a barcode scanner, and receive a custom weight loss plan to reach your goals faster.

**Highlights:** Automatic macro calculator, Carb and calorie counter, Personalized weight loss plan, Voice recognition food logging, Barcode scanner for food entry, Nutrition tracker, Keto recipe library

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keto Diet App Premium | $9.99 | per month |
| Keto Diet App Premium | $14.99 | per month |
| Keto Diet App Premium | $19.99 | per month |
| Keto Diet App Premium | $29.99 | per year |
| Keto Diet App Premium | $39.99 | per year |
| Keto Diet App Premium | $49.99 | per year |
| Keto Diet App Premium | $69.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for tracking macros
- 🚀 Accurate food logging
- 💡 Useful insights and information
- 👍 Great for beginners

**What reviewers complain about**

- 🐛 Inconsistent food database
- 🐛 Inaccurate calorie/carb calculations
- 💡 Lacks integration with fitness trackers
- 💡 Limited recipe options and customization
- 💡 Difficult to add and manage own recipes

**Reported bugs**

- Barcode scanner not working consistently
- App crashes or freezes on some devices
- Subscription issues and difficulty cancelling

**Requested features**

- Water intake tracking
- Ability to share/sync data with others
- More robust food database with international options
- Improved recipe management and customization
- Integration with fitness apps and devices


### 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 Keto Diet App － Carb Tracker free?

Keto Diet App － Carb Tracker 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, Keto Diet App － Carb Tracker or Fast?

Keto Diet App － Carb Tracker is rated higher. Keto Diet App － Carb Tracker averages 4.7 out of 5 from 82K ratings, while Fast averages 4.7 from 3.3K ratings.

### Do Keto Diet App － Carb Tracker or Fast have ads?

Neither Keto Diet App － Carb Tracker nor Fast shows ads.

### Which is updated more often, Keto Diet App － Carb Tracker or Fast?

Keto Diet App － Carb Tracker ships an update every 2 weeks, and Fast every 2 months. Most recently, Keto Diet App － Carb Tracker was updated on November 1, 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.*