# Stronglifts 5x5 Workout Plan vs Flex

The clearest difference is rating: Stronglifts 5x5 Workout Plan at 4.9 against Flex's 4.2. Stronglifts 5x5 Workout Plan also leads on ratings volume (77K vs 5). Flex's advantage is in-app purchases (none vs 10) and review sentiment (75% vs 63%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stronglifts 5x5 Workout Plan sells 8 in-app purchases, starting at $4.99 per 7 days. Flex asks for nothing beyond the download.

Stronglifts 5x5 Workout Plan holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Stronglifts 5x5 Workout Plan has 77K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 63% of Stronglifts 5x5 Workout Plan's written reviews are positive against 75% of Flex's, so the app with the better star average is not the one people write more warmly about.

Stronglifts 5x5 Workout Plan ships an update every 2 weeks, Flex fortnightly. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Stronglifts 5x5 Workout Plan | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (77K ratings)](https://appshunter.io/ios/app/stronglifts-5x5-workout-plan/id488580022/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/flex-gym-workout-tracker/id986808754/reviews) |
| Number of ratings | **77K** | 5 |
| Positive reviews | 62.6% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 172 MB | 5 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [StrongLifts](https://appshunter.io/developer/916468093) | [Dino Constantinou](https://appshunter.io/developer/848408117) |

## What reviewers say

### Stronglifts 5x5 Workout Plan

[App page](https://appshunter.io/ios/app/stronglifts-5x5-workout-plan/id488580022)

This app guides you through a proven barbell strength training program with no guesswork. It plans every exercise, set, and weight for you, allowing you to focus on lifting and see consistent progress. Ideal for beginners or those returning to strength training.

**Highlights:** Proven 3x/week strength program, Automated progression, Guided workouts with timers, Progress charts, Simple interface

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $11.99 | per month |
| Pro Quarterly | $29.99 | per 3 months |
| Pro Yearly | $59.99 | per year |
| Pro Yearly | $59.99 | per year |
| Pro Yearly | $59.99 | per year |
| StrongLifts Pro 5 Years | $199.99 | one-time |
| StrongLifts Pro 5 Years | $239.99 | one-time |

**What reviewers like**

- 💪 Effective strength-building program
- 📈 Tracks progress and helps with consistency
- 🤖 Automatic weight progression and plate calculation
- ⏱️ Convenient timer and rest period tracking
- 📚 Helpful exercise form videos

**What reviewers complain about**

- 🐛 Occasional bugs and syncing issues
- 💰 Subscription model can be expensive for some
- 🔒 Limited customization options in free version
- ⚠️ Weights may not be accurate for all users
- 🕰️ Workouts can be time-consuming for some

**Reported bugs**

- Workout data loss and reset issues
- Inconsistent Apple Watch connectivity
- Inability to edit or delete custom exercises

**Requested features**

- Ability to customize core exercises
- Menstrual cycle tracking and programming
- More pre-built program options
- Integration with other fitness apps and devices
- Recommended meal plans and nutrition guidance


### Flex

[App page](https://appshunter.io/ios/app/flex-gym-workout-tracker/id986808754)

This app helps strength training enthusiasts track their workouts. Create custom plans, log reps and weight, and monitor progress with a dashboard and rest timers. It syncs with Apple Health.

**Highlights:** Workout plan creation, Rep and weight tracking, Rest timers, Exercise progress monitoring, Apple Health sync, Customizable units (KG/LB)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stronglifts 5x5 Workout Plan free?

Stronglifts 5x5 Workout Plan 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, Stronglifts 5x5 Workout Plan or Flex?

Stronglifts 5x5 Workout Plan is rated higher. Stronglifts 5x5 Workout Plan averages 4.9 out of 5 from 77K ratings, while Flex averages 4.2 from 5 ratings.

### Do Stronglifts 5x5 Workout Plan or Flex have ads?

Neither Stronglifts 5x5 Workout Plan nor Flex shows ads.

### Which is updated more often, Stronglifts 5x5 Workout Plan or Flex?

Stronglifts 5x5 Workout Plan ships an update every 2 weeks, and Flex fortnightly. Most recently, Stronglifts 5x5 Workout Plan was updated on November 7, 2026 and Flex on November 6, 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.*