# Seconds Interval Timer vs Zestimer

The clearest difference is update cadence: Zestimer at every 3 days against Seconds Interval Timer's monthly. Zestimer also leads on review sentiment (88% vs 75%). Seconds Interval Timer's advantage is ratings volume (24K vs 14). On price, rating, 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 Zestimer sells 4 in-app purchases, starting at $5.99 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 4.7 for Zestimer. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 75% of Seconds Interval Timer's written reviews are positive against 88% of Zestimer's.

Seconds Interval Timer ships an update monthly, Zestimer every 3 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Seconds Interval Timer | Zestimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (24K ratings)](https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews) | **[4.7 (14 ratings)](https://appshunter.io/ios/app/zestimer-hiit-and-stretching/id6758530290/reviews)** |
| Number of ratings | **24K** | 14 |
| Positive reviews | 74.5% of reviews | **87.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 99 MB | 53 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [MAGIC PARK LABS LLC](https://appshunter.io/developer/1866425444) |

## 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


### Zestimer

[App page](https://appshunter.io/ios/app/zestimer-hiit-and-stretching/id6758530290)

This app transforms YouTube videos or AI prompts into timed workouts, offering both high-intensity interval training and stretching routines. It provides voice and haptic cues for seamless transitions, and features AI coaching for custom workout adjustments. Available on iPhone and Apple Watch.

**Highlights:** Convert YouTube videos to timed workouts, AI-powered workout generation and editing, Voice and haptic interval cues, Stretching and mobility routines, Apple Watch integration, Customizable workout builder

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zestimer Pro (Monthly) | $5.99 | per month |
| Zestimer Pro (Yearly) | $19.99 | per year |
| Zest Pack | $0.99 | one-time |
| Zestimer Pro (Lifetime) | $59.99 | one-time |


## Frequently asked questions

### Is Seconds Interval Timer free?

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

### Is Zestimer free?

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

### Which has better reviews, Seconds Interval Timer or Zestimer?

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

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

Neither Seconds Interval Timer nor Zestimer shows ads.

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

Seconds Interval Timer ships an update monthly, and Zestimer every 3 days. Most recently, Seconds Interval Timer was updated on October 26, 2026 and Zestimer on October 25, 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.*