# Seconds Interval Timer vs Pacelab Interval Timer

The clearest difference is in-app purchases: Pacelab Interval Timer at none against Seconds Interval Timer's 1. Pacelab Interval Timer also leads on iOS requirement (15.0 vs 18.0). Seconds Interval Timer's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase. Pacelab Interval Timer asks for nothing beyond the download.

Seconds Interval Timer ships an update monthly, Pacelab Interval Timer every 4 months. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Pacelab Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (24K ratings)](https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews)** | — |
| Number of ratings | **24K** | — |
| Positive reviews | 74.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 99 MB | 24 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Newbuildsoft](https://appshunter.io/developer/1834215268) |

## What reviewers say

### Seconds Interval Timer

[App page](https://appshunter.io/ios/app/seconds-interval-timer/id475816966)

This interval timer app helps you build and run custom workouts for HIIT, Tabata, and circuits. It provides voice cues, runs in the background, and syncs with Apple Watch. Save workouts to Apple Health and track calories burned.

**Highlights:** Build custom timers for any workout, Voice cues for intervals, Runs in background with screen off, Syncs with Apple Watch, Color-coded interval display, Save workouts to Apple Health, Play music with cues

**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


### Pacelab Interval Timer

[App page](https://appshunter.io/ios/app/pacelab-interval-timer/id6757274503)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Seconds Interval Timer free?

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

### Is Pacelab Interval Timer free?

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

### Do Seconds Interval Timer or Pacelab Interval Timer have ads?

Neither Seconds Interval Timer nor Pacelab Interval Timer shows ads.

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

Seconds Interval Timer ships an update monthly, and Pacelab Interval Timer every 4 months. Most recently, Seconds Interval Timer was updated on November 2, 2026 and Pacelab Interval Timer on October 28, 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.*