# Seconds Interval Timer vs Interval Timer for Fitness

The clearest difference is iOS requirement: Seconds Interval Timer at 18.0 against Interval Timer for Fitness's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase and Interval Timer for Fitness sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Seconds Interval Timer ships an update monthly, Interval Timer for Fitness every 3 weeks. The most recent releases landed on November 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Interval Timer for Fitness |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 99 MB | 23 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [Reuben Enterprises Ltd](https://appshunter.io/developer/1804593784) |

## 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


### Interval Timer for Fitness

[App page](https://appshunter.io/ios/app/interval-timer-for-fitness/id6753744662)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Seconds Interval Timer free?

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

### Is Interval Timer for Fitness free?

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

### Do Seconds Interval Timer or Interval Timer for Fitness have ads?

Neither Seconds Interval Timer nor Interval Timer for Fitness shows ads.

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

Seconds Interval Timer ships an update monthly, and Interval Timer for Fitness every 3 weeks. Most recently, Seconds Interval Timer was updated on November 9, 2026 and Interval Timer for Fitness on October 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.*