# Seconds Pro Interval Timer vs Pacer Fitness

The clearest difference is price: Pacer Fitness at Free against Seconds Pro Interval Timer's $7.99. Pacer Fitness also leads on iOS requirement (12.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 1) and ratings volume (12K vs 306). On rating, update cadence, ads and device support there is nothing between them.

Pacer Fitness is free to download; Seconds Pro Interval Timer costs $7.99 up front. Pacer Fitness sells 1 one-off in-app purchase. Seconds Pro Interval Timer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Seconds Pro Interval Timer against 4.7 for Pacer Fitness. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 306, so its average is the more settled of the two. Written reviews are what separate them: 80% of Seconds Pro Interval Timer's written reviews are positive against 60% of Pacer Fitness's.

Seconds Pro Interval Timer ships an update fortnightly, Pacer Fitness every 9 days. Both last shipped on October 21, 2026.

## The numbers

| Metric | Seconds Pro Interval Timer | Pacer Fitness |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.8 (12K ratings)](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811/reviews)** | [4.7 (306 ratings)](https://appshunter.io/ios/app/pacer-fitness-interval-timer/id701657891/reviews) |
| Number of ratings | **12K** | 306 |
| Positive reviews | **79.7% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#8** | — |
| Size | 94 MB | 132 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Bright Mediums](https://appshunter.io/developer/575202166) |

## 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, #83 Top Paid (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


### Pacer Fitness

[App page](https://appshunter.io/ios/app/pacer-fitness-interval-timer/id701657891)

This app provides a beautiful and intuitive interval timer to help you maximize your workouts. Easily create, customize, and share timers with friends, and enjoy seamless music integration. It's designed to help you reach your fitness goals faster.

**Highlights:** Intuitive interval timer visualization, Easy timer creation and customization, Apple Watch integration, Timer sharing with friends, Autostart workout feature, Seamless music integration, Featured workouts for beginners

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pacer Plus | $4.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 🎨 Beautiful, clean, and visually appealing design
- ⚙️ Highly customizable timer configurations
- 🔊 Satisfying and audible sound notifications
- 💾 Ability to save and reuse custom timers

**What reviewers complain about**

- 💰 Misleading free-to-premium pricing model
- 🔐 Privacy concerns with Apple Health data syncing
- 🐛 App crashes when screen is locked
- 🐛 App stops when switching to other apps
- 📢 Excessive and intrusive advertisements

**Reported bugs**

- Intervals beyond the 8th one don't execute
- Example workout has broken intervals
- Apple Health sync toggle resets automatically
- Timer stops when phone screen is locked
- Timer stops when switching between apps

**Requested features**

- Auto-play functionality for continuous workouts
- Apple Watch app support
- GPS tracking for running workouts
- Adjustable countdown time (longer than 3 seconds)
- Ability to combine multiple timers in one workout


## Frequently asked questions

### Is Seconds Pro Interval Timer free?

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

### Is Pacer Fitness free?

Pacer Fitness is free to download, with in-app purchases available.

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

Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while Pacer Fitness averages 4.7 from 306 ratings.

### Do Seconds Pro Interval Timer or Pacer Fitness have ads?

Neither Seconds Pro Interval Timer nor Pacer Fitness shows ads.

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

Seconds Pro Interval Timer ships an update fortnightly, and Pacer Fitness every 9 days. Most recently, Seconds Pro Interval Timer was updated on October 21, 2026 and Pacer Fitness on October 21, 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.*