# HIIT & Run Interval Timer vs Gains AI

The clearest difference is in-app purchases: HIIT & Run Interval Timer at none against Gains AI's 3. HIIT & Run Interval Timer also leads on update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Gains AI sells 3 in-app purchases, starting at $4.99 per 7 days. HIIT & Run Interval Timer asks for nothing beyond the download.

HIIT & Run Interval Timer ships an update weekly, Gains AI every 3 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HIIT & Run Interval Timer | Gains AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/hiit-and-run-interval-timer/id6749603263/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free | — |
| Size | 2 MB | 64 MB |
| Requires iOS | 18.0 | **17** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [christopher sturm](https://appshunter.io/developer/1831402215) | [Jesus Medrano](https://appshunter.io/developer/1845183946) |

## What reviewers say

### HIIT & Run Interval Timer

[App page](https://appshunter.io/ios/app/hiit-and-run-interval-timer/id6749603263)

This app provides a simple and reliable timer for high-intensity interval workouts. It allows users to create custom workout segments, loop routines, and reorder exercises without distractions. It runs in the background and supports dark mode.

**Highlights:** Customizable workout segments, Workout looping for multiple rounds, Drag-and-drop segment reordering, Background operation, Dark mode support, No ads or subscriptions

**Features:** macOS Compatibility

**In-app purchases:** none


### Gains AI

[App page](https://appshunter.io/ios/app/gains-ai-calorie-tracker/id6755696040)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gains AI Pro - Weekly | $4.99 | per 7 days |
| Gains AI Pro - Monthly | $9.99 | per month |
| Gains AI Pro - Yearly | $29.99 | per year |


## Frequently asked questions

### Is HIIT & Run Interval Timer free?

HIIT & Run Interval Timer is free to download, with no in-app purchases.

### Is Gains AI free?

Gains AI is free to download, with in-app purchases available.

### Do HIIT & Run Interval Timer or Gains AI have ads?

Neither HIIT & Run Interval Timer nor Gains AI shows ads.

### Which is updated more often, HIIT & Run Interval Timer or Gains AI?

HIIT & Run Interval Timer ships an update weekly, and Gains AI every 3 months. Most recently, HIIT & Run Interval Timer was updated on October 30, 2026 and Gains AI on November 5, 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.*