# Seconds Pro Interval Timer vs CoreFit Collective

The clearest difference is price: CoreFit Collective at Free against Seconds Pro Interval Timer's $7.99. CoreFit Collective also leads on iOS requirement (15.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 2 months). On ads and device support there is nothing between them.

CoreFit Collective is free to download; Seconds Pro Interval Timer costs $7.99 up front. CoreFit Collective sells 2 in-app purchases, starting at $5.99 per month. Seconds Pro Interval Timer asks for nothing beyond the download.

Seconds Pro Interval Timer ships an update fortnightly, CoreFit Collective every 2 months. The most recent releases landed on October 2, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Seconds Pro Interval Timer | CoreFit Collective |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.8 (12K ratings)](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811/reviews)** | — |
| Number of ratings | **12K** | — |
| Positive reviews | 79.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | — |
| Best chart rank | **#8** | — |
| Size | 94 MB | 65 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Core Health & Fitness LLC](https://appshunter.io/developer/1448702933) |

## What reviewers say

### Seconds Pro Interval Timer

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

**Currently charting:** #8 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


### CoreFit Collective

[App page](https://appshunter.io/ios/app/corefit-collective/id6749279832)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoreFit Cycle Monthly (In-App) | $5.99 | per month |
| CoreFit Cycle Yearly (In-App) | $59.00 | per year |


## Frequently asked questions

### Is Seconds Pro Interval Timer free?

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

### Is CoreFit Collective free?

CoreFit Collective is free to download, with in-app purchases available.

### Do Seconds Pro Interval Timer or CoreFit Collective have ads?

Neither Seconds Pro Interval Timer nor CoreFit Collective shows ads.

### Which is updated more often, Seconds Pro Interval Timer or CoreFit Collective?

Seconds Pro Interval Timer ships an update fortnightly, and CoreFit Collective every 2 months. Most recently, Seconds Pro Interval Timer was updated on October 2, 2026 and CoreFit Collective on September 9, 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.*