# Chew AI vs Flex

The clearest difference is review sentiment: Flex at 100% against Chew AI's 50%. Flex also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 4). Chew AI's advantage is update cadence (weekly vs every 6 months) and iOS requirement (15.0 vs 18.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Chew AI sells 4 in-app purchases, starting at $3.99 per 7 days. Flex asks for nothing beyond the download.

Flex holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews point the same way: 50% of Chew AI's written reviews are positive against 100% of Flex's.

Chew AI ships an update weekly, Flex every 6 months. The most recent releases landed on October 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Chew AI | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/chew-ai-easy-calorie-tracker/id6744138033/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/flex-workout-tracker/id6758920531/reviews)** |
| Number of ratings | 4 | **7** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 77 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ANAMANA PTE. LTD.](https://appshunter.io/developer/1760474747) | [KEVIN BROWN](https://appshunter.io/developer/1803158449) |

## What reviewers say

### Chew AI

[App page](https://appshunter.io/ios/app/chew-ai-easy-calorie-tracker/id6744138033)

Effortlessly track your food intake and achieve your body goals by simply snapping pictures of your meals. This AI-powered tool provides personalized plans, insights, and water/weight tracking to help you adjust eating habits and get slimmer.

**Highlights:** Food picture tracking, Automatic calorie logging, Personalized diet plans, AI coach insights, Water and weight tracking, Workout and activity sync

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited | $3.99 | per 7 days |
| Unlimited | $19.99 | per year |
| Unlimited | $34.99 | per year |
| Unlimted | $34.99 | per year |


### Flex

[App page](https://appshunter.io/ios/app/flex-workout-tracker/id6758920531)

Effortlessly track your strength training progress, build personalized workout routines, and visualize your lifts with an intelligent plate calculator. Syncs data across devices using iCloud for seamless access and prioritizes privacy with Sign in with Apple.

**Highlights:** Effortless workout tracking, Personalized workout templates, Customizable workout folders, Smart Plate Calculator, Cross-device iCloud sync, Privacy-focused with Sign in with Apple

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

**In-app purchases:** none


## Frequently asked questions

### Is Chew AI free?

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

### Is Flex free?

Flex is free to download, with no in-app purchases.

### Which has better reviews, Chew AI or Flex?

Flex is rated higher. Chew AI averages 4.0 out of 5 from 4 ratings, while Flex averages 5.0 from 7 ratings.

### Do Chew AI or Flex have ads?

Neither Chew AI nor Flex shows ads.

### Which is updated more often, Chew AI or Flex?

Chew AI ships an update weekly, and Flex every 6 months. Most recently, Chew AI was updated on October 16, 2026 and Flex on September 23, 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.*