# GymNext Flex Timer vs Interval Timer

The clearest difference is in-app purchases: Interval Timer at none against GymNext Flex Timer's 2. Interval Timer also leads on rating (5.0 vs 4.8). GymNext Flex Timer's advantage is ratings volume (2.1K vs 1) and device support (4 vs 2). On price, update cadence, ads and monetization model there is nothing between them.

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

Interval Timer 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, Interval Timer every 2 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GymNext Flex Timer | Interval Timer |
| --- | --- | --- |
| 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/interval-timer-timetotrain/id6757983634/reviews)** |
| Number of ratings | **2.1K** | 1 |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 185 MB | 2 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Homick Enterprises](https://appshunter.io/developer/346326303) | [Danila Dundukov](https://appshunter.io/developer/1776675659) |

## 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


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-timetotrain/id6757983634)

This app provides a precise interval timer for high-intensity interval training (HIIT), Tabata, and circuit workouts. It features customizable intervals, smart audio cues, and a clear countdown display to keep users focused during intense training sessions.

**Highlights:** Customizable work and rest intervals, Built-in Tabata and HIIT presets, Smart audio and haptic feedback, Large countdown display, Workout history and statistics, Adjustable rounds and sets

**Features:** macOS Compatibility

**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 Interval Timer free?

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

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

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

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

Neither GymNext Flex Timer nor Interval Timer shows ads.

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

GymNext Flex Timer ships an update every 3 weeks, and Interval Timer every 2 weeks. Most recently, GymNext Flex Timer was updated on October 15, 2026 and Interval Timer on October 14, 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.*