# GymNext Flex Timer vs Smart Strength

The clearest difference is monetization model: GymNext Flex Timer at free against Smart Strength's free with in-app purchases. GymNext Flex Timer also leads on ratings volume (2.1K vs 1). Smart Strength's advantage is update cadence (weekly vs every 3 weeks) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. GymNext Flex Timer sells 2 in-app purchases, starting at $8.99 per month and Smart Strength sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Smart Strength holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GymNext Flex Timer has 2.1K ratings behind it against 1, so its average is the more settled of the two.

GymNext Flex Timer ships an update every 3 weeks, Smart Strength weekly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GymNext Flex Timer | Smart Strength |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (2.1K ratings)](https://appshunter.io/ios/app/gymnext-flex-timer/id977329344/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-strength/id6769226289/reviews)** |
| Number of ratings | **2.1K** | 1 |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 185 MB | 2 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Homick Enterprises](https://appshunter.io/developer/346326303) | [Brain Builder](https://appshunter.io/developer/1896641534) |

## What reviewers say

### GymNext Flex Timer

[App page](https://appshunter.io/ios/app/gymnext-flex-timer/id977329344)

This app offers advanced interval training timing with customizable modes and the ability to control an external LED display. It integrates with wearables and heart rate monitors for a comprehensive workout experience.

**Highlights:** Control external LED displays, Multiple customizable timer modes (Tabata, EMOM, etc.), Save and recall favorite workouts, Apple Watch control, Audio sync with music, Heart rate monitor integration, Control multiple LED displays

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex Timer Pro Monthly | $8.99 | per month |
| Flex Timer Pro Yearly | $79.99 | per year |

**What reviewers like**

- 🚀 Versatile and customizable
- 👍 User-friendly interface
- 🔔 Reliable and consistent
- 💪 Excellent for interval training
- 🔊 Clear audio cues

**What reviewers complain about**

- 🐛 Audio cues sometimes stop working
- 🔊 Lack of volume control
- 🔍 Detailed instructions needed for beginners
- ⏱️ Delayed countdown between phone and timer

**Reported bugs**

- Saved timers not consistently loading
- Segmented timers not saving properly

**Requested features**

- Watch app integration for remote control
- Background audio playback when app is closed
- Customizable voice options
- Lap timer functionality


### Smart Strength

[App page](https://appshunter.io/ios/app/smart-strength/id6769226289)

This AI-powered strength training app generates personalized workout programs based on your equipment, schedule, and experience. It adapts as you progress, offering smart suggestions for weight and logging your workouts and nutrition in natural language.

**Highlights:** AI-generated personalized workout programs, Adaptive progression based on logged workouts, Smart weight suggestions, Natural language nutrition logging, Progress tracking with PR detection, AI-powered insights on training and recovery, Integrations with Whoop, Renpho, and Strava

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart Strength Pro | $5.99 | per month |


## Frequently asked questions

### Is GymNext Flex Timer free?

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

### Is Smart Strength free?

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

### Which has better reviews, GymNext Flex Timer or Smart Strength?

Smart Strength is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while Smart Strength averages 5.0 from 1 ratings.

### Do GymNext Flex Timer or Smart Strength have ads?

Neither GymNext Flex Timer nor Smart Strength shows ads.

### Which is updated more often, GymNext Flex Timer or Smart Strength?

GymNext Flex Timer ships an update every 3 weeks, and Smart Strength weekly. Most recently, GymNext Flex Timer was updated on October 13, 2026 and Smart Strength on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*