# Seconds Interval Timer vs Intervals Pro

The clearest difference is update cadence: Intervals Pro at every 8 days against Seconds Interval Timer's monthly. Intervals Pro also leads on review sentiment (84% vs 75%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase and Intervals Pro sells 8 in-app purchases, starting at $2.99 per month. 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 Intervals Pro. Both are backed by a comparable volume of ratings — 24K and 14K respectively. Written reviews are what separate them: 75% of Seconds Interval Timer's written reviews are positive against 84% of Intervals Pro's.

Seconds Interval Timer ships an update monthly, Intervals Pro every 8 days. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Intervals Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (24K ratings)](https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews) | **[4.8 (14K ratings)](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938/reviews)** |
| Number of ratings | **24K** | 14K |
| Positive reviews | 75.0% of reviews | **84.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 95 MB | 69 MB |
| Requires iOS | 18.0 | **17.5** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Intervals, LLC](https://appshunter.io/developer/331071662) |

## 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


### Intervals Pro

[App page](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938)

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

**Highlights:** Highly customizable intervals (time/distance), Spoken interval names and prompts, Standalone Apple Watch workouts, Workout history with Apple Health, Home screen widgets for quick launch, Bluetooth heart rate monitor support, Siri Shortcuts integration

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $2.99 | per month |
| Yearly Membership | $19.99 | per year |
| Generous Tip | $0.99 | one-time |
| Awesome Tip | $1.99 | one-time |
| Massive Tip | $4.99 | one-time |
| Amazing Tip | $9.99 | one-time |
| Intervals Pro (Legacy) | $69.99 | one-time |
| Lifetime Access | $69.99 | one-time |

**What reviewers like**

- 👍 Customizable timers and intervals
- 🚀 Seamless Apple Watch integration
- 💪 Helps with fitness goals and training
- 🔍 Detailed workout tracking and analytics
- 🎨 Intuitive and user-friendly interface

**What reviewers complain about**

- 🐛 Occasional sync and connectivity issues
- 🔍 Lack of clear guidance and documentation
- 💰 Paid version required for full functionality

**Reported bugs**

- Workout data not syncing correctly
- App crashes or freezes on certain devices

**Requested features**

- More customization options for interval displays
- Ability to batch delete or manage workout history
- Integration with more third-party fitness apps


## Frequently asked questions

### Is Seconds Interval Timer free?

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

### Is Intervals Pro free?

Intervals Pro is free to download, with in-app purchases available.

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

Intervals Pro is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Intervals Pro averages 4.8 from 14K ratings.

### Do Seconds Interval Timer or Intervals Pro have ads?

Neither Seconds Interval Timer nor Intervals Pro shows ads.

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

Seconds Interval Timer ships an update monthly, and Intervals Pro every 8 days. Most recently, Seconds Interval Timer was updated on September 25, 2026 and Intervals Pro on September 24, 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.*