# Seconds Pro Interval Timer vs HC HIIT Interval Timer

The clearest difference is price: HC HIIT Interval Timer at Free against Seconds Pro Interval Timer's $7.99. HC HIIT Interval Timer also leads on review sentiment (100% vs 80%) and iOS requirement (16.0 vs 18.0). Seconds Pro Interval Timer's advantage is rating (4.8 vs 4.2) and update cadence (fortnightly vs every 21 months). On ads and in-app purchases there is nothing between them.

HC HIIT Interval Timer is free to download; Seconds Pro Interval Timer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seconds Pro Interval Timer holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 80% of Seconds Pro Interval Timer's written reviews are positive against 100% of HC HIIT Interval Timer's, so the app with the better star average is not the one people write more warmly about.

Seconds Pro Interval Timer ships an update fortnightly, HC HIIT Interval Timer every 21 months. The most recent releases landed on September 24, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Seconds Pro Interval Timer | HC HIIT Interval Timer |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.8 (12K ratings)](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/hc-hiit-interval-timer/id1501179862/reviews) |
| Number of ratings | **12K** | 5 |
| Positive reviews | 79.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 21 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#9** | — |
| Size | 94 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Dejan Dragic](https://appshunter.io/developer/1501179861) |

## What reviewers say

### Seconds Pro Interval Timer

[App page](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811)

**Currently charting:** #9 Top Paid · Health & Fitness (US App Store)

This interval timer app is designed for high-intensity interval training (HIIT), Tabata, and circuit training workouts. It features a large, color-coded display, customizable interval names, and background operation. It also integrates with Apple Health to track your fitness data.

**Highlights:** Full screen colored display, Templates for HIIT, Tabata, Circuit Training, Speaks interval names and provides warnings, Assign music per interval, Runs in background, Share interval timers, Apple Health integration

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

**In-app purchases:** none

**What reviewers like**

- ⭐ Great updates
- 🤖 Amazing voice prompts
- 👍 Easy to use
- 🎨 Highly customizable
- 🔧 Versatile for various workouts

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔌 Music volume issues
- 🔍 Complicated setup for some features
- 🌐 Sync/sharing issues between devices
- 🔇 Inconsistent audio cues

**Reported bugs**

- Intervals randomly pausing or skipping
- Music volume issues when launching the app
- Inconsistent audio cues and countdown
- Sync issues between devices

**Requested features**

- Ability to lock Apple Watch screen
- Option to see more than just the next exercise
- Fractional time settings (e.g. 7.74 seconds)
- More voice/audio customization options
- Improved sync between iPhone and iPad


### HC HIIT Interval Timer

[App page](https://appshunter.io/ios/app/hc-hiit-interval-timer/id1501179862)

Create and manage custom interval training workouts with an integrated timer. Design workouts with specific actions, colors, names, and durations. Suitable for personal training or individual fitness routines.

**Highlights:** Create custom workouts, Integrated workout timer, Define actions with color, name, and duration, Use default workouts, Save and reuse workout routines

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Seconds Pro Interval Timer free?

Seconds Pro Interval Timer costs $7.99, with no in-app purchases.

### Is HC HIIT Interval Timer free?

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

### Which has better reviews, Seconds Pro Interval Timer or HC HIIT Interval Timer?

Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while HC HIIT Interval Timer averages 4.2 from 5 ratings.

### Do Seconds Pro Interval Timer or HC HIIT Interval Timer have ads?

Neither Seconds Pro Interval Timer nor HC HIIT Interval Timer shows ads.

### Which is updated more often, Seconds Pro Interval Timer or HC HIIT Interval Timer?

Seconds Pro Interval Timer ships an update fortnightly, and HC HIIT Interval Timer every 21 months. Most recently, Seconds Pro Interval Timer was updated on September 24, 2026 and HC HIIT Interval Timer on June 4, 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.*