# Seconds Pro Interval Timer vs ClassFit for Business

The clearest difference is price: ClassFit for Business at Free against Seconds Pro Interval Timer's $7.99. ClassFit for Business also leads on iOS requirement (15.6 vs 18.0). Seconds Pro Interval Timer's advantage is review sentiment (79% vs 35%) and rating (4.8 vs 2.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

ClassFit for Business is free to download; Seconds Pro Interval Timer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seconds Pro Interval Timer holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 79% of Seconds Pro Interval Timer's written reviews are positive against 35% of ClassFit for Business's.

Seconds Pro Interval Timer ships an update fortnightly, ClassFit for Business monthly. The most recent releases landed on November 12, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Seconds Pro Interval Timer | ClassFit for Business |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.8 (12K ratings)](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811/reviews)** | [2.0 (7 ratings)](https://appshunter.io/ios/app/classfit-for-business/id1400691253/reviews) |
| Number of ratings | **12K** | 7 |
| Positive reviews | **79.1% of reviews** | 35.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Paid | **Free** |
| Best chart rank | **#7** | — |
| Size | 98 MB | 78 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Runloop Ltd](https://appshunter.io/developer/325563420) | [FastPlay Ltd.](https://appshunter.io/developer/995838392) |

## What reviewers say

### Seconds Pro Interval Timer

[App page](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811)

**Currently charting:** #7 Top Paid · Health & Fitness, #96 Top Paid (US App Store)

This interval timer app is designed for high-intensity interval training (HIIT), Tabata, and circuit training workouts. It features a large, color-coded display, customizable interval names, and background operation. It also integrates with Apple Health to track your fitness data.

**Highlights:** Full screen colored display, Templates for HIIT, Tabata, Circuit Training, Speaks interval names and provides warnings, Assign music per interval, Runs in background, Share interval timers, Apple Health integration

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

**In-app purchases:** none

**What reviewers like**

- ⭐ Great updates
- 🤖 Amazing voice prompts
- 👍 Easy to use
- 🎨 Highly customizable
- 🔧 Versatile for various workouts

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔌 Music volume issues
- 🔍 Complicated setup for some features
- 🌐 Sync/sharing issues between devices
- 🔇 Inconsistent audio cues

**Reported bugs**

- Intervals randomly pausing or skipping
- Music volume issues when launching the app
- Inconsistent audio cues and countdown
- Sync issues between devices

**Requested features**

- Ability to lock Apple Watch screen
- Option to see more than just the next exercise
- Fractional time settings (e.g. 7.74 seconds)
- More voice/audio customization options
- Improved sync between iPhone and iPad


### ClassFit for Business

[App page](https://appshunter.io/ios/app/classfit-for-business/id1400691253)

This app helps class organizers manage their schedules, client information, and financial transactions. It provides tools for efficient business operations in the fitness industry.

**Highlights:** Class management, Customer tracking, Payment processing, Schedule organization, Business operations

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Seconds Pro Interval Timer free?

Seconds Pro Interval Timer costs $7.99, with no in-app purchases.

### Is ClassFit for Business free?

ClassFit for Business is free to download, with no in-app purchases.

### Which has better reviews, Seconds Pro Interval Timer or ClassFit for Business?

Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while ClassFit for Business averages 2.0 from 7 ratings.

### Do Seconds Pro Interval Timer or ClassFit for Business have ads?

Neither Seconds Pro Interval Timer nor ClassFit for Business shows ads.

### Which is updated more often, Seconds Pro Interval Timer or ClassFit for Business?

Seconds Pro Interval Timer ships an update fortnightly, and ClassFit for Business monthly. Most recently, Seconds Pro Interval Timer was updated on November 12, 2026 and ClassFit for Business on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*