# Intervals Pro vs Periodic Timer + Custom Sounds

The clearest difference is price: Intervals Pro at Free against Periodic Timer + Custom Sounds's $4.99. Intervals Pro also leads on rating (4.8 vs 3.9) and update cadence (every 8 days vs every 2 months). Periodic Timer + Custom Sounds's advantage is chart position (#57 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Intervals Pro is free to download; Periodic Timer + Custom Sounds costs $4.99 up front. Intervals Pro sells 8 in-app purchases, starting at $2.99 per month and Periodic Timer + Custom Sounds sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Intervals Pro holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Intervals Pro has 14K ratings behind it against 75, so its average is the more settled of the two. Written reviews point the same way: 84% of Intervals Pro's written reviews are positive against 55% of Periodic Timer + Custom Sounds's.

Intervals Pro ships an update every 8 days, Periodic Timer + Custom Sounds every 2 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | Intervals Pro | Periodic Timer + Custom Sounds |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.8 (14K ratings)](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938/reviews)** | [3.9 (75 ratings)](https://appshunter.io/ios/app/periodic-timer-plus-custom-sounds/id1175807581/reviews) |
| Number of ratings | **14K** | 75 |
| Positive reviews | **84.3% of reviews** | 54.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#57** |
| Size | 65 MB | 17 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Intervals, LLC](https://appshunter.io/developer/331071662) | [Vladimir Kelin](https://appshunter.io/developer/933241655) |

## What reviewers say

### 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


### Periodic Timer + Custom Sounds

[App page](https://appshunter.io/ios/app/periodic-timer-plus-custom-sounds/id1175807581)

**Currently charting:** #57 Top Paid · Health & Fitness (US App Store)

This app provides a simple, repeating interval timer that works in the background. It offers customizable sounds, vibration, and flexible output modes for various activities like fitness, cooking, and learning. The interface is designed to be minimalist and distraction-free.

**Highlights:** Repeating interval timer, Customizable sounds and vibration, Works in the background, Long intervals up to 99 hours, Multiple timer output modes, Shake to start functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip a Banana | $0.99 | one-time |
| Tip a Coffee | $3.99 | one-time |
| Donate: Bust the project! | $9.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 👍 Perfect for workouts
- 👍 No ads, no nonsense
- 👍 Good app, like it
- 👍 Very practical

**What reviewers complain about**

- 😩 Nagging to write reviews
- 😩 Doesn't work in background
- 😩 Not loud enough
- 😩 Vibration too short
- 😩 Paid version lacks features

**Reported bugs**

- Doesn't work in background
- Timer doesn't work for over 59 minutes on watch
- Custom alert audio not working
- Alarm not working after payment
- App doesn't open

**Requested features**

- More sound options
- Ability to set alarm for a time of day
- Explanation for changing display mode
- Simultaneous timers
- Ability to set start/end times and weekdays


## Frequently asked questions

### Is Intervals Pro free?

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

### Is Periodic Timer + Custom Sounds free?

Periodic Timer + Custom Sounds costs $4.99, and also offers in-app purchases.

### Which has better reviews, Intervals Pro or Periodic Timer + Custom Sounds?

Intervals Pro is rated higher. Intervals Pro averages 4.8 out of 5 from 14K ratings, while Periodic Timer + Custom Sounds averages 3.9 from 75 ratings.

### Do Intervals Pro or Periodic Timer + Custom Sounds have ads?

Neither Intervals Pro nor Periodic Timer + Custom Sounds shows ads.

### Which is updated more often, Intervals Pro or Periodic Timer + Custom Sounds?

Intervals Pro ships an update every 8 days, and Periodic Timer + Custom Sounds every 2 months. Most recently, Intervals Pro was updated on October 23, 2026 and Periodic Timer + Custom Sounds on October 23, 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.*