# Seconds Interval Timer vs Fitness Fortify

The clearest difference is price: Seconds Interval Timer at Free against Fitness Fortify's $2.99. Seconds Interval Timer also leads on update cadence (monthly vs every 12 months) and ratings volume (24K vs 9). Fitness Fortify's advantage is in-app purchases (none vs 1) and review sentiment (86% vs 74%). On rating, ads and device support there is nothing between them.

Seconds Interval Timer is free to download; Fitness Fortify costs $2.99 up front. Seconds Interval Timer sells 1 one-off in-app purchase. Fitness Fortify asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Seconds Interval Timer against 4.6 for Fitness Fortify. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 74% of Seconds Interval Timer's written reviews are positive against 86% of Fitness Fortify's.

Seconds Interval Timer ships an update monthly, Fitness Fortify every 12 months. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Fitness Fortify |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.7 (24K ratings)](https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/fitness-fortify/id6737724246/reviews) |
| Number of ratings | **24K** | 9 |
| Positive reviews | 74.5% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 99 MB | 3 MB |
| Requires iOS | **18.0** | 26.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [YOURFULLSTACK, LLC](https://appshunter.io/developer/363434825) |

## 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


### Fitness Fortify

[App page](https://appshunter.io/ios/app/fitness-fortify/id6737724246)

This free fitness app helps users stay motivated with customizable timers, a random exercise generator, and a full workout builder. Easily share your progress via SMS, email, or social media. Track intervals and rest periods effortlessly to enhance your training.

**Highlights:** Customizable workout timers, Random exercise generator, Core exercise focus, Full workout builder, Progress sharing, Interval and rest period tracking

**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 Fitness Fortify free?

Fitness Fortify costs $2.99, with no in-app purchases.

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

Seconds Interval Timer is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Fitness Fortify averages 4.6 from 9 ratings.

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

Neither Seconds Interval Timer nor Fitness Fortify shows ads.

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

Seconds Interval Timer ships an update monthly, and Fitness Fortify every 12 months. Most recently, Seconds Interval Timer was updated on November 11, 2026 and Fitness Fortify on November 10, 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.*