GymNext Flex Timer vs Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GymNext Flex Timer
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.
- 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
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Meet the future of interval training. GymNext Flex Timer is the only timer app that combines powerful workout programming with control of large, wall-mounted LED displays—giving you the best of both worlds. Traditional gym timers rely on clunky remotes and are difficult to use. Mobile apps are flexible, but hard to see across the room. Flex Timer solves both. Build and control your workouts from your phone while displaying them on bright, easy-to-read LED screens anywhere in your gym. Perfect for HIIT, CrossFit, circuits, bootcamps, boxing, MMA, strength training, and more. Features: • Use the app on its own or connect to GymNext LED displays for maximum visibility • Core timer modes include Count Up/Down, Round, Tabata, EMOM, Mixed Intervals, and Sets with Rest • Plan your personal workouts or full classes in advance—everything ready in one tap • Share timers with athletes and trainers instantly using simple links • Save workouts to your library for quick access • Control your timer from Apple Watch—completely hands-free • Smart audio sync keeps your music and timer cues perfectly aligned • Connect multiple Bluetooth heart rate monitors and track performance in real time • Set custom heart rate zones for better training feedback • Control multiple timers across your gym at the same time • Run different workouts simultaneously for group training • Reliable Bluetooth control with no line-of-sight limitations “This will eventually become the standard for all gyms” – Garage Gym Reviews “All our coaches love the clock” – CrossFit Barrie “We love it to death” – Wolverine Strength & Conditioning Download Flex Timer and upgrade the way you train. We’re always improving. Have feedback? Reach us at support@gymnext.com
Interval Timer
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.
- 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
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Interval Timer — HIIT & Tabata Workout Timer Transform your training with the ultimate Interval Timer for HIIT, Tabata, and circuit workouts. Whether you're crushing a 4-minute Tabata session or powering through multi-set circuits, this precision timer keeps you focused and on track. Large countdown display, smart audio cues, and customizable intervals — everything you need for intense training sessions. BUILT-IN PRESETS • Tabata — Classic 20s work / 10s rest, 8 rounds • HIIT 30/30 — Balanced 30s intervals, 10 rounds CUSTOM WORKOUTS Create unlimited workout templates tailored to your training: • Work intervals: 5–300 seconds • Rest intervals: 5–300 seconds • Rounds: 1–50 • Sets: 1–10 with configurable set breaks • Optional preparation and cooldown phases SMART FEEDBACK • Sound alerts — Different tones for work vs. rest • Haptic feedback — Feel interval changes without looking • Countdown beeps — 3-2-1 audio cues before transitions • Fully customizable — toggle each notification type independently TIMER FEATURES • Large, readable countdown with circular progress indicator • Play/Pause control for mid-workout breaks • Skip forward/backward to adjust on the fly • Keep screen on during workouts • Real-time round and set tracking TRACK YOUR PROGRESS • Complete workout history • Session statistics — completed vs. abandoned workouts • Total training time tracking • Filter by week, month, year, or all time PERFECT FOR • HIIT training • Tabata protocols • Circuit timer sessions • Boxing/MMA rounds • CrossFit WODs • Bodyweight circuits • Strength training supersets Simple. Powerful. Distraction-free. A professional-grade Interval Timer built for athletes who demand precision.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | GymNext Flex Timer | Interval Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (2.1K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 71.7% of reviews | — |
| Number of ratings | 2.1K — better | 1 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 185 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Homick Enterprises | Danila Dundukov |
Customer experience
GymNext Flex Timer
Interval Timer
Bugs and requests
GymNext Flex Timer
Reported bugs
2 issues- Saved timers not consistently loading
- Segmented timers not saving properly
Requested features
4 requests- Watch app integration for remote control
- Background audio playback when app is closed
- Customizable voice options
- Lap timer functionality
Interval Timer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GymNext Flex Timer
- Flex Timer Pro Monthly7 Days trial$8.991 Month
- Flex Timer Pro Yearly1 Month trial$79.991 Year
Interval Timer
No in-app purchases
Questions
Is GymNext Flex Timer free?
Is Interval Timer free?
Which has better reviews, GymNext Flex Timer or Interval Timer?
Do GymNext Flex Timer or Interval Timer have ads?
Which is updated more often, GymNext Flex Timer or Interval Timer?
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