# GymNext Flex Timer vs HIITLY

The clearest difference is in-app purchases: HIITLY at none against GymNext Flex Timer's 2. HIITLY also leads on update cadence (every 6 days vs every 3 weeks) and rating (5.0 vs 4.8). GymNext Flex Timer's advantage is ratings volume (2.1K vs 2) and device support (4 vs 2). On price, ads, monetization model and iOS requirement there is nothing between them.

Both are free to download. GymNext Flex Timer sells 2 in-app purchases, starting at $8.99 per month. HIITLY asks for nothing beyond the download.

HIITLY 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 2, so its average is the more settled of the two.

GymNext Flex Timer ships an update every 3 weeks, HIITLY every 6 days. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | GymNext Flex Timer | HIITLY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (2.1K ratings)](https://appshunter.io/ios/app/gymnext-flex-timer/id977329344/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hiitly-smart-workout-timer/id6743633814/reviews)** |
| Number of ratings | **2.1K** | 2 |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free | Free |
| Size | 185 MB | 27 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Homick Enterprises](https://appshunter.io/developer/346326303) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## 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


### HIITLY

[App page](https://appshunter.io/ios/app/hiitly-smart-workout-timer/id6743633814)

This interval timer app allows for quick setup of custom workouts with adjustable intervals, rest periods, and rounds. It offers voice cues or beeps, background functionality, and detailed workout history to track progress. Ideal for HIIT, Tabata, and circuit training.

**Highlights:** Customizable intervals, rest, and rounds, Voice cues or beeps, Background functionality, Detailed workout history and stats, Repeat past workouts, Unlimited custom timer creation

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

**In-app purchases:** none


## Frequently asked questions

### Is GymNext Flex Timer free?

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

### Is HIITLY free?

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

### Which has better reviews, GymNext Flex Timer or HIITLY?

HIITLY is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while HIITLY averages 5.0 from 2 ratings.

### Do GymNext Flex Timer or HIITLY have ads?

Neither GymNext Flex Timer nor HIITLY shows ads.

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

GymNext Flex Timer ships an update every 3 weeks, and HIITLY every 6 days. Most recently, GymNext Flex Timer was updated on October 13, 2026 and HIITLY on September 24, 2026.

---

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