# Fitness JANNY vs Interval Timer | HIIT Training

The clearest difference is in-app purchases: Fitness JANNY at none against Interval Timer | HIIT Training's 3. Fitness JANNY also leads on ads (none vs shown). Interval Timer | HIIT Training's advantage is update cadence (every 10 days vs every 9 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. Fitness JANNY asks for nothing beyond the download.

Fitness JANNY ships an update every 9 months, Interval Timer | HIIT Training every 10 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Fitness JANNY | Interval Timer | HIIT Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 101 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [INSPIRE CZ](https://appshunter.io/developer/582633229) | [LS PROGRAMACAO LTDA](https://appshunter.io/developer/1896779603) |

## What reviewers say

### Fitness JANNY

[App page](https://appshunter.io/ios/app/fitness-janny/id6757488387)

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

**In-app purchases:** none


### Interval Timer | HIIT Training

[App page](https://appshunter.io/ios/app/interval-timer-hiit-training/id6791772563)

This app provides a customizable timer for various interval training styles, including HIIT, Tabata, and boxing. It features large, clear displays and sound/vibration alerts for seamless workouts, even with the screen off. Track and share your progress with detailed workout summaries and map integrations.

**Highlights:** Customizable work and rest intervals, Large, full-screen display with color coding, Sound and vibration alerts, Workout tracking and sharing, Wear OS app for standalone use, Nesting repeat blocks for complex workouts, Distance-based intervals

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro Monthly | $1.99 | per month |
| Interval Timer Pro Annual | $11.99 | per year |
| Interval Timer Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Fitness JANNY free?

Fitness JANNY is free to download, with no in-app purchases.

### Is Interval Timer | HIIT Training free?

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

### Do Fitness JANNY or Interval Timer | HIIT Training have ads?

Interval Timer | HIIT Training shows ads; Fitness JANNY does not.

### Which is updated more often, Fitness JANNY or Interval Timer | HIIT Training?

Fitness JANNY ships an update every 9 months, and Interval Timer | HIIT Training every 10 days. Most recently, Fitness JANNY was updated on October 31, 2026 and Interval Timer | HIIT Training 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.*