# Seconds Interval Timer vs Circuit Training Timer Lite

The clearest difference is ratings volume: Seconds Interval Timer at 24K against Circuit Training Timer Lite's 468. Circuit Training Timer Lite's advantage is review sentiment (85% vs 75%) and iOS requirement (12.0 vs 18.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase and Circuit Training Timer Lite sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Seconds Interval Timer against 4.8 for Circuit Training Timer Lite. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 468, so its average is the more settled of the two. Written reviews are what separate them: 75% of Seconds Interval Timer's written reviews are positive against 85% of Circuit Training Timer Lite's.

Seconds Interval Timer ships an update monthly, Circuit Training Timer Lite every 6 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Circuit Training Timer Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (24K ratings)](https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews) | **[4.8 (468 ratings)](https://appshunter.io/ios/app/circuit-training-timer-lite/id903631807/reviews)** |
| Number of ratings | **24K** | 468 |
| Positive reviews | 74.6% of reviews | **84.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 95 MB | 36 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [DenciSoft s.r.o.](https://appshunter.io/developer/583724967) |

## What reviewers say

### Seconds Interval Timer

[App page](https://appshunter.io/ios/app/seconds-interval-timer/id475816966)

This app provides a versatile interval timer for various workout types like Tabata, HIIT, and circuit training. It features a clear, full-screen display, customizable alerts, and background operation. Users can also utilize a stopwatch and countdown timer, with integration for Apple Health.

**Highlights:** Full-screen colored display, Templates for HIIT, Tabata, Circuit Training, Voice and audio alerts, Music assignment per interval, Background operation, Apple Health integration, Stopwatch and countdown timer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Version | $7.99 | one-time |

**What reviewers like**

- 🚀 Great workout app
- 👍 Customizable and user-friendly
- 🔒 Reliable and stable
- 💡 Versatile for various workouts
- 👍 Easy to create and edit timers

**What reviewers complain about**

- 🐛 Occasional audio issues
- 🔍 Limited Apple Watch integration
- 💰 Paid version required for full functionality
- 🕰️ Time-consuming to set up complex workouts

**Reported bugs**

- Timer sometimes stops working unexpectedly
- Issues with restoring purchases on new devices

**Requested features**

- Ability to change beep/alert volume independently
- Option to delay transition between intervals
- Sync workouts across devices
- More preset workout templates
- Heart rate monitoring integration


### Circuit Training Timer Lite

[App page](https://appshunter.io/ios/app/circuit-training-timer-lite/id903631807)

This app coaches your workouts with customizable timers, allowing you to focus on training. It supports location tracking for detailed statistics and heart rate monitoring with Bluetooth LE devices. Voice coaching and clear visual cues keep you informed without needing to check your screen.

**Highlights:** Customizable interval timers, Location tracking for stats, Bluetooth LE heart rate monitor support, Voice coaching and notifications, Workout history tracking, iCloud synchronization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Unlimited Timers | $1.99 | one-time |
| Full Version | $2.99 | one-time |

**What reviewers like**

- 👍 Highly customizable workouts
- 🎶 Music integration
- ⏱️ Flexible timer settings
- 🔊 Voice prompts for exercises
- 📚 Saved workout routines

**What reviewers complain about**

- 🔋 Battery drain issues
- 🔒 Limited functionality in free version
- 🔇 Quiet audio prompts
- 📈 Lack of workout history/progress tracking

**Reported bugs**

- Playlist sync issues
- App crashes when phone is locked

**Requested features**

- Ability to share workout routines
- Integration with fitness tracking apps
- More advanced statistics and analytics
- Apple Watch app support


## Frequently asked questions

### Is Seconds Interval Timer free?

Seconds Interval Timer is free to download, with in-app purchases available.

### Is Circuit Training Timer Lite free?

Circuit Training Timer Lite is free to download, with in-app purchases available.

### Which has better reviews, Seconds Interval Timer or Circuit Training Timer Lite?

Circuit Training Timer Lite is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Circuit Training Timer Lite averages 4.8 from 468 ratings.

### Do Seconds Interval Timer or Circuit Training Timer Lite have ads?

Neither Seconds Interval Timer nor Circuit Training Timer Lite shows ads.

### Which is updated more often, Seconds Interval Timer or Circuit Training Timer Lite?

Seconds Interval Timer ships an update monthly, and Circuit Training Timer Lite every 6 weeks. Most recently, Seconds Interval Timer was updated on October 13, 2026 and Circuit Training Timer Lite on October 7, 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.*