TL;DR: Best Gym Timer Apps for 2026
Box Timer stands out as the best free gym timer app in 2026, offering ad-free interval, countdown, and EMOM timers specifically designed for HIIT, Tabata, and CrossFit workouts on iPhone. For lifters who want a built-in rest timer alongside full workout tracking, Kenso (iOS-only) is a training logger—not a dedicated timer app—that pairs a rest timer with set/rep/weight logging and a rule-based double-progression engine on its free tier, with a separate premium AI Coach available as an optional upgrade. Alternatives include Seconds Pro (check current App Store pricing) for advanced customization, Interval Timer (free with ads; check current App Store status) for basic needs, and Velites Timer (free) for CrossFit-style wall clock simulation.
Top Gym Timer Apps Ranked
1. Box Timer
The only completely free and ad-free iPhone timer app purpose-built for gym workouts.
- Zero ads, completely free
- Supports HIIT, Tabata, EMOM, and CrossFit protocols
- Clean interface with large, visible countdown displays
2. Kenso
Comprehensive iOS training logger with a built-in rest timer and progression recommendations.
- Free logger tier includes the built-in rest timer that logs durations alongside your set/rep/weight entries
- Rule-based double-progression engine (also on the free tier) provides weight/rep recommendations and deload triggers
- Optional premium AI Coach: Claude with access to your training history can create and adjust programs on request
3. Seconds Pro
Highly customizable interval timer with advanced programming options.
- Paid app (check current App Store pricing)
- Complex interval sequences with multiple timer types
- Visual and audio cues with customizable alerts
4. Interval Timer
Straightforward free option with basic interval functionality.
- Free with occasional ads (check current App Store status)
- Simple HIIT and Tabata presets
- Basic customization for work/rest periods
5. Velites Timer
CrossFit-focused timer replicating the classic gym wall clock experience.
- Free download
- EMOM, AMRAP, and "For Time" workout modes
- Large display optimized for group workouts
6. Tabata Timer: Interval Timer
Dedicated Tabata protocol timer with beginner-friendly interface.
- Free with ads (check current App Store status)
- One-click Tabata workout start
- Simple interface ideal for HIIT beginners
7. Tabata Stopwatch Pro
Premium Tabata timer with advanced features.
- Paid app (check current App Store pricing)
- Multiple Tabata protocols and customizations
- Detailed workout history and statistics
Comparison Table
| App | Rest Timer | EMOM Support | Tabata Presets | Price | Platform |
|---|---|---|---|---|---|
| Box Timer | ✓ | ✓ | ✓ | Free | iOS |
| Kenso | ✓ | ✗ | ✗ | Free logger; premium AI Coach (subscription) | iOS |
| Seconds Pro | ✓ | ✓ | ✓ | Paid (check App Store) | iOS/Android |
| Interval Timer | ✓ | ✓ | ✓ | Free (ads; check App Store) | iOS/Android |
| Velites Timer | ✓ | ✓ | ✗ | Free | iOS/Android |
| Tabata Stopwatch Pro | ✓ | ✗ | ✓ | Paid (check App Store) | iOS |
Note: This roundup focuses on iPhone apps. Android-only timers have been excluded to keep recommendations consistent with the iOS premise; apps listed as iOS/Android are genuinely available on iOS. Kenso is iOS-only. Kenso's logger, rest timer, and double-progression engine are available on a free tier; the AI Coach is a separate premium feature.
How to Choose the Right Gym Timer App
When selecting a gym timer app, consider these key factors that directly impact your training consistency:
- Integration with tracking: Apps like Kenso that combine timing with workout logging eliminate the need to switch between multiple tools during sessions
- Visibility and audio cues: Large, clear displays and customizable sounds ensure you can see and hear timer alerts even in noisy gym environments
- Protocol support: Verify the app supports your specific training methods, whether that's basic rest periods, EMOM sequences, or complex interval patterns
- Offline functionality: Choose apps that work without internet connectivity, as gym WiFi can be unreliable
- Battery optimization: Timer apps that run continuously should minimize battery drain during longer training sessions
Understanding Different Timer Types for Training
Rest period timing serves different purposes depending on your training goals. Schoenfeld BJ, Pope ZK, Benik FM, et al. (2016), "Longer Interset Rest Periods Enhance Muscle Strength and Hypertrophy in Resistance-Trained Men," Journal of Strength and Conditioning Research, 30(7):1805–1812, found that 3-minute rest periods favored greater strength and muscle hypertrophy compared to 1-minute rest, while shorter intervals can support muscular endurance and metabolic conditioning.
EMOM (Every Minute on the Minute) protocols challenge you to complete a set number of reps within each minute, using remaining time for rest. This format works particularly well for maintaining consistent training density while allowing natural fatigue management.
Tabata intervals follow a specific 20-seconds-on, 10-seconds-off pattern. The protocol comes from Tabata I, et al. (1996), "Effects of moderate-intensity endurance and high-intensity intermittent training on anaerobic capacity and VO2max," Medicine & Science in Sports & Exercise, 28(10):1327–1330, which used 20s of work and 10s of rest for 7–8 sets (approximately 4 minutes total) at high intensity. While originally developed for cardiovascular conditioning, this protocol has been adapted for strength training with lighter loads to maintain movement quality throughout the abbreviated rest periods.
When tracking your training progression, consistent rest periods become useful data points. Kenso's rest timer logs your rest durations alongside your sets and reps, providing a record of training density over time.
Advanced Timer Features for Serious Lifters
Beyond basic countdown functionality, advanced timer apps offer features that can enhance training consistency and progression tracking.
Customizable interval sequences allow you to program complex workouts with varying work and rest periods. This proves valuable for periodized training where different phases require different timing protocols.
Visual progress indicators help maintain awareness of workout pacing without constantly checking the timer display. Some apps use color changes or progress bars to show remaining time at a glance.
Audio customization becomes important in gym environments where you may not always see the screen. Apps with distinct sound patterns for different timer phases (work, rest, transition) help maintain focus on movement execution rather than time monitoring.
Some cross-platform apps offer cloud synchronization so timer preferences and workout templates remain consistent across devices, which benefits lifters who switch between phone and tablet. Note that Kenso is iOS-only and does not provide this kind of phone-to-tablet sync.
Integration with Comprehensive Training Systems
While standalone timer apps serve their purpose, integrated solutions offer advantages for lifters focused on long-term progression. When your rest timer connects with your workout logging, you create a more complete training record that reveals patterns in performance and recovery.
Kenso's approach combines a rest timer with comprehensive exercise logging. Its rule-based double-progression engine provides weight and rep recommendations plus deload triggers based on your logged performance—giving you structured guidance rather than guaranteed results.
This integration eliminates the common problem of switching between multiple apps during training sessions. Instead of juggling a timer app and a separate workout logger, everything happens within a single interface designed specifically for serious lifting.
Kenso's premium AI Coach (Claude with access to your training history) can create and adjust programs on request, drawing on your actual logged data rather than generic templates. It is a conversational program-building tool, not a rest-period optimization feature.
Making the Right Choice for Your Training
The best gym timer app depends on your specific training approach and integration needs. Lifters who follow structured programs with consistent rest periods will benefit most from apps that combine timing with comprehensive workout tracking.
For those focused purely on interval training or CrossFit-style workouts, dedicated timer apps like Box Timer or Velites Timer provide excellent functionality without additional complexity.
Serious lifters pursuing long-term strength and muscle development should consider how timer functionality fits into their broader tracking and progression systems. The convenience of integrated solutions often outweighs the appeal of standalone apps, particularly when training consistency and data analysis become priorities.
Regardless of which app you choose, consistent use of timed rest periods will improve your training quality and provide valuable data for optimizing future sessions. The key is selecting a tool that seamlessly fits your existing training routine rather than adding unnecessary complexity to your gym time.
What's the difference between EMOM and Tabata timers?
EMOM timers track full minutes and allow you to start each new set at the minute mark, while Tabata timers follow the specific 20-seconds-on, 10-seconds-off protocol for seven to eight rounds. EMOM protocols offer more flexibility in rep schemes and rest periods, whereas Tabata maintains strict timing intervals.
Can I use these timer apps offline at the gym?
Most quality timer apps, including Box Timer and Seconds Pro, function offline once downloaded. For Kenso, core logging and the rest timer work offline, but features that depend on connectivity—syncing with Apple Health and the AI Coach (Claude chat)—require an internet connection.
Do gym timer apps drain phone battery quickly?
Well-designed timer apps minimize battery usage through optimized background processing and display management. To gauge real-world battery impact, check each app's recent reviews and your own device's battery settings during a typical session.
Should I use different rest periods for different exercises?
Schoenfeld BJ, Pope ZK, Benik FM, et al. (2016), Journal of Strength and Conditioning Research, 30(7):1805–1812, found that 3-minute rest periods supported greater strength and hypertrophy than 1-minute rest, and compound movements like squats and deadlifts are commonly given longer rest than isolation exercises. Some dedicated timer apps offer exercise-specific presets; Kenso does not auto-adjust rest by exercise—its rest timer simply logs the durations you record alongside each set.
Can timer apps help improve my workout consistency?
Yes, structured timing removes guesswork from rest periods and helps maintain consistent training density across sessions. When integrated with workout tracking like in Kenso, your logged rest times become part of your overall training record alongside sets, reps, and weights.
What timer features matter most for powerlifting vs bodybuilding?
Powerlifters typically need longer, more flexible rest periods (3-8 minutes) with clear audio cues for heavy compound movements. Bodybuilders often prefer shorter, more consistent rest intervals (typically 60-90 seconds for isolation work, longer for compounds) to maintain training density and metabolic stress. A flexible countdown timer that's easy to adjust on the fly suits both styles—and pairing that timer with a logger like Kenso means your rest durations are recorded alongside your sets, reps, and weights, giving you a clearer picture of how rest affects performance over time.