# Onyx Timer vs Intervals Pro

The clearest difference is rating: Intervals Pro at 4.8 against Onyx Timer's 4.1. Intervals Pro also leads on ratings volume (14K vs 17) and review sentiment (85% vs 65%). Onyx Timer's advantage is iOS requirement (7.0 vs 17.5). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Onyx Timer sells 1 one-off in-app purchase and Intervals Pro sells 8 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Intervals Pro holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Intervals Pro has 14K ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 65% of Onyx Timer's written reviews are positive against 85% of Intervals Pro's.

Onyx Timer ships an update every 2 weeks, Intervals Pro weekly. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Onyx Timer | Intervals Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (17 ratings)](https://appshunter.io/ios/app/onyx-timer-hands-free-voice-controlled-talking-exercise-timer/id880784736/reviews) | **[4.8 (14K ratings)](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938/reviews)** |
| Number of ratings | 17 | **14K** |
| Positive reviews | 65.2% of reviews | **84.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 35 MB | 66 MB |
| Requires iOS | **7.0** | 17.5 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kirill Edelman](https://appshunter.io/developer/460175496) | [Intervals, LLC](https://appshunter.io/developer/331071662) |

## What reviewers say

### Onyx Timer

[App page](https://appshunter.io/ios/app/onyx-timer-hands-free-voice-controlled-talking-exercise-timer/id880784736)

This app allows users to create and manage custom workouts combining time-based and rep-based exercises. Control your workout hands-free with voice commands and receive audio cues for each exercise. Workouts can be saved and shared, with options for visual and auditory customization.

**Highlights:** Voice-controlled timer, Mix time and rep-based exercises, Audio exercise announcements, Background operation, Workout saving and sharing, Customizable commands

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Intervals Pro

[App page](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938)

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

**Highlights:** Highly customizable intervals (time/distance), Spoken interval names and prompts, Standalone Apple Watch workouts, Workout history with Apple Health, Home screen widgets for quick launch, Bluetooth heart rate monitor support, Siri Shortcuts integration

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $2.99 | per month |
| Yearly Membership | $19.99 | per year |
| Generous Tip | $0.99 | one-time |
| Awesome Tip | $1.99 | one-time |
| Massive Tip | $4.99 | one-time |
| Amazing Tip | $9.99 | one-time |
| Intervals Pro (Legacy) | $69.99 | one-time |
| Lifetime Access | $69.99 | one-time |

**What reviewers like**

- 👍 Customizable timers and intervals
- 🚀 Seamless Apple Watch integration
- 💪 Helps with fitness goals and training
- 🔍 Detailed workout tracking and analytics
- 🎨 Intuitive and user-friendly interface

**What reviewers complain about**

- 🐛 Occasional sync and connectivity issues
- 🔍 Lack of clear guidance and documentation
- 💰 Paid version required for full functionality

**Reported bugs**

- Workout data not syncing correctly
- App crashes or freezes on certain devices

**Requested features**

- More customization options for interval displays
- Ability to batch delete or manage workout history
- Integration with more third-party fitness apps


## Frequently asked questions

### Is Onyx Timer free?

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

### Is Intervals Pro free?

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

### Which has better reviews, Onyx Timer or Intervals Pro?

Intervals Pro is rated higher. Onyx Timer averages 4.1 out of 5 from 17 ratings, while Intervals Pro averages 4.8 from 14K ratings.

### Do Onyx Timer or Intervals Pro have ads?

Neither Onyx Timer nor Intervals Pro shows ads.

### Which is updated more often, Onyx Timer or Intervals Pro?

Onyx Timer ships an update every 2 weeks, and Intervals Pro weekly. Most recently, Onyx Timer was updated on November 1, 2026 and Intervals Pro 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.*