# Interval Timer Sec+Sec vs HIIT Training Interval Timer

The clearest difference is rating: HIIT Training Interval Timer at 5.0 against Interval Timer Sec+Sec's 3.7. Interval Timer Sec+Sec's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. HIIT Training Interval Timer sells 1 one-off in-app purchase. Interval Timer Sec+Sec asks for nothing beyond the download.

HIIT Training Interval Timer holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 13 and 10 respectively.

Interval Timer Sec+Sec ships an update every 12 months, HIIT Training Interval Timer every 9 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Interval Timer Sec+Sec | HIIT Training Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (13 ratings)](https://appshunter.io/ios/app/interval-timer-sec-plus-sec/id595618563/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/hiit-training-interval-timer/id1615538751/reviews)** |
| Number of ratings | **13** | 10 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 9 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 12 MB | 2 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## What reviewers say

### Interval Timer Sec+Sec

[App page](https://appshunter.io/ios/app/interval-timer-sec-plus-sec/id595618563)

This free interval training timer app uses alarms and vibrations to mark specified second intervals. It automatically tracks repetitions and remembers your settings, making it ideal for High Intensity Interval Training (HIIT). Background operation is limited.

**Highlights:** Second-based interval timing, Alarm and vibration alerts, Repetition counter, Saves interval settings, Suitable for HIIT, Background operation limited

**Features:** Vision Pro support

**In-app purchases:** none


### HIIT Training Interval Timer

[App page](https://appshunter.io/ios/app/hiit-training-interval-timer/id1615538751)

This application helps manage the duration of your high-intensity interval training workouts. You can create and customize various timers to fit your specific exercise routines. It is designed to be intuitive, simple, and easy to operate.

**Highlights:** Create and edit custom timers, Manage full HIIT workout time, Intuitive and simple interface, Workout customization

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $5.99 | one-time |


## Frequently asked questions

### Is Interval Timer Sec+Sec free?

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

### Is HIIT Training Interval Timer free?

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

### Which has better reviews, Interval Timer Sec+Sec or HIIT Training Interval Timer?

HIIT Training Interval Timer is rated higher. Interval Timer Sec+Sec averages 3.7 out of 5 from 13 ratings, while HIIT Training Interval Timer averages 5.0 from 10 ratings.

### Do Interval Timer Sec+Sec or HIIT Training Interval Timer have ads?

Both Interval Timer Sec+Sec and HIIT Training Interval Timer show ads.

### Which is updated more often, Interval Timer Sec+Sec or HIIT Training Interval Timer?

Interval Timer Sec+Sec ships an update every 12 months, and HIIT Training Interval Timer every 9 months. Most recently, Interval Timer Sec+Sec was updated on September 24, 2026 and HIIT Training Interval Timer on September 25, 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.*