# SCA Professor vs Interval Timer

The clearest difference is in-app purchases: SCA Professor at none against Interval Timer's 3. SCA Professor also leads on iOS requirement (13.0 vs 15.0). Interval Timer's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $9.99 per 7 days. SCA Professor asks for nothing beyond the download.

SCA Professor ships an update every 6 weeks, Interval Timer weekly. The most recent releases landed on October 8, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SCA Professor | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-circuit-and-hiit/id6810989259/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 39 MB | 35 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Prosistemas Tecnologia em Software Limitada EPP](https://appshunter.io/developer/1375710662) | [ShenZhen Niddles Technology Co., Ltd.](https://appshunter.io/developer/1829412162) |

## What reviewers say

### SCA Professor

[App page](https://appshunter.io/ios/app/sca-professor/id6746805340)

This app allows fitness instructors to efficiently manage client training plans, view personal and payment information, and access a product showcase. It offers features like workout assembly with animations, payment processing, and QR code access for gyms.

**Highlights:** Workout assembly with animations, Client training plan editing, Payment history and online payment, Access to product showcase, QR code access release, Integrated stopwatch

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-circuit-and-hiit/id6810989259)

This app provides a flexible and customizable interval timer for various training routines. Easily set up work and rest durations, rounds, and custom sequences with clear audio and visual cues to keep you focused during workouts. Track your progress with a workout history calendar.

**Highlights:** Customizable work/rest durations, Multiple rounds and sets, Preparation and cool-down times, Named custom intervals, Sound, vibration, and spoken cues, Workout history calendar

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $19.99 | per month |
| Yearly Subscription | $59.99 | per year |


## Frequently asked questions

### Is SCA Professor free?

SCA Professor is free to download, with no in-app purchases.

### Is Interval Timer free?

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

### Do SCA Professor or Interval Timer have ads?

Neither SCA Professor nor Interval Timer shows ads.

### Which is updated more often, SCA Professor or Interval Timer?

SCA Professor ships an update every 6 weeks, and Interval Timer weekly. Most recently, SCA Professor was updated on October 8, 2026 and Interval Timer on October 26, 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.*