# Flex AI Workout Trainer & Log vs Krilo

The clearest difference is rating: Krilo at 5.0 against Flex AI Workout Trainer & Log's 4.6. Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 2) and iOS requirement (18.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $12.99 per month and Krilo sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Krilo holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 2, so its average is the more settled of the two.

Flex AI Workout Trainer & Log ships an update every 9 days, Krilo every 11 days. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flex AI Workout Trainer & Log | Krilo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/krilo-calorie-and-macro-tracker/id6785719724/reviews)** |
| Number of ratings | **2.4K** | 2 |
| Positive reviews | 69.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 11 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 574 MB | 12 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Nicholas Gittings](https://appshunter.io/developer/6785719726) |

## What reviewers say

### Flex AI Workout Trainer & Log

[App page](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547)

This app uses AI to provide personalized workout plans and real-time form feedback for weightlifters. It tracks progress, offers adaptive progression, and includes motivational features like leaderboards and streaks. It's designed for all experience levels, from beginners to pros.

**Highlights:** AI personal trainer, Real-time form feedback, Personalized workout plans, Adaptive progression, Strength tracking, Community leaderboards, Apple Watch integration

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $12.99 | per month |
| Premium Plus Monthly | $29.99 | per month |
| Premium Plus Family Monthly | $69.99 | per month |
| Premium Yearly Subscription | $79.99 | per year |
| Premium Plus Yearly | $191.99 | per year |
| Premium Plus Family Yearly | $499.99 | per year |
| 1 Month Free Premium | Free | one-time |
| Lifetime Free Premium | Free | one-time |

**What reviewers like**

- 🚀 Detailed workout tracking
- 👍 Customizable workouts
- 🔒 Comprehensive exercise library
- 💡 Helpful progress tracking
- 👍 Clean and intuitive interface

**What reviewers complain about**

- 🐛 Glitches and bugs
- 💰 Expensive premium subscription
- 🔒 Limited functionality without premium
- 🐛 Inconsistent rest timer
- 🐛 Workout data loss

**Reported bugs**

- App crashes on iOS 16 update
- Inability to log workouts on previous days
- Inconsistent syncing between app and Apple Watch

**Requested features**

- Offline workout mode
- Ability to save and reuse custom workout plans
- Muscle group targeting and analytics
- Social features and community integration


### Krilo

[App page](https://appshunter.io/ios/app/krilo-calorie-and-macro-tracker/id6785719724)

Log meals by taking photos, and AI will identify your food, estimate calories, and track macros. Syncs with Apple Health for a complete picture of your daily intake and activity. Plan meals and generate grocery lists easily.

**Highlights:** AI photo food recognition, Barcode scanner, Manual food entry, Macro tracking with visual rings, Personalized calorie targets, Apple Health integration, Apple Watch app

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Krilo Premium Monthly | $4.99 | per month |
| Krilo Premium | $49.99 | per year |


## Frequently asked questions

### Is Flex AI Workout Trainer & Log free?

Flex AI Workout Trainer & Log is free to download, with in-app purchases available.

### Is Krilo free?

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

### Which has better reviews, Flex AI Workout Trainer & Log or Krilo?

Krilo is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Krilo averages 5.0 from 2 ratings.

### Do Flex AI Workout Trainer & Log or Krilo have ads?

Neither Flex AI Workout Trainer & Log nor Krilo shows ads.

### Which is updated more often, Flex AI Workout Trainer & Log or Krilo?

Flex AI Workout Trainer & Log ships an update every 9 days, and Krilo every 11 days. Most recently, Flex AI Workout Trainer & Log was updated on October 24, 2026 and Krilo on October 1, 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.*