# Gym Log vs Flex

The clearest difference is in-app purchases: Gym Log at none against Flex's 3. Gym Log also leads on ads (none vs shown). Flex's advantage is update cadence (every 10 days vs every 5 months) and iOS requirement (16.4 vs 18.2). On price and device support there is nothing between them.

Both are free to download. Flex sells 3 in-app purchases, starting at $4.99 per month. Gym Log asks for nothing beyond the download.

Gym Log ships an update every 5 months, Flex every 10 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gym Log | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/flex-workout-tracker-and-log/id6757288350/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 6 MB | 107 MB |
| Requires iOS | 18.2 | **16.4** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [James Butler](https://appshunter.io/developer/978686771) | [CHRISTOPHER LAWRENCE BAGNELL](https://appshunter.io/developer/1865550731) |

## What reviewers say

### Gym Log

[App page](https://appshunter.io/ios/app/gym-log-workout-day/id6744711191)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flex

[App page](https://appshunter.io/ios/app/flex-workout-tracker-and-log/id6757288350)

This app logs every workout set, tracks personal records, and generates personalized fitness plans. It also offers nutrition tracking, progress insights, and an AI coach for guidance. Stay motivated with streaks and badges, and share your progress with others.

**Highlights:** AI-generated workout plans, Set-by-set tracking with rest timer, Superset support, GPS cardio tracking, Nutrition logging with macro breakdowns, Personal record tracking, AI coach for fitness advice

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex Pro Monthly | $4.99 | per month |
| Flex Pro Annual | $29.99 | per year |
| Flex Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is Gym Log free?

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

### Is Flex free?

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

### Do Gym Log or Flex have ads?

Flex shows ads; Gym Log does not.

### Which is updated more often, Gym Log or Flex?

Gym Log ships an update every 5 months, and Flex every 10 days. Most recently, Gym Log was updated on October 25, 2026 and Flex on October 31, 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.*