# Ninja Fit vs Interval Timer

The clearest difference is ads: Interval Timer at none against Ninja Fit's shown. Ninja Fit's advantage is update cadence (every 2 weeks vs monthly). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Ninja Fit sells 9 in-app purchases, starting at $4.99 per month and Interval Timer sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.2 for Ninja Fit against 4.2 for Interval Timer. Both are backed by a comparable volume of ratings — 10 and 10 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Ninja Fit ships an update every 2 weeks, Interval Timer monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ninja Fit | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (10 ratings)](https://appshunter.io/ios/app/ninja-fit-ai-calorie-tracker/id6459370976/reviews) | [4.2 (10 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-workouts/id6742372753/reviews) |
| Number of ratings | 10 | 10 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 169 MB | 31 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Alexey Kostylev](https://appshunter.io/developer/1437544984) | [Lori Nguyen](https://appshunter.io/developer/1872689629) |

## What reviewers say

### Ninja Fit

[App page](https://appshunter.io/ios/app/ninja-fit-ai-calorie-tracker/id6459370976)

This app offers AI-powered calorie tracking and personalized nutrition plans to help users achieve weight loss, muscle gain, or balanced lifestyle goals. It features meal logging, weight tracking, and weekly progress reports, with seamless integration for fitness apps and devices.

**Highlights:** AI-driven calorie tracking, Personalized nutrition plans, User-friendly meal logging, Weight and progress tracking, Fitness app integration, Weekly progress reports

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ninja-Pro Access (Monthly) | $4.99 | per month |
| Ninja-Pro Access (Weekly) | $7.99 | per 7 days |
| Ninja-Pro Access (Weekly) | $9.99 | per 7 days |
| Ninja-Pro Access (Monthly) | $12.99 | per month |
| Ninja-Pro Access (Monthly) | $12.99 | per month |
| Ninja-Pro Access (Yearly) | $29.99 | per year |
| Ninja-Pro Access (Yearly) | $59.99 | per year |
| Ninja-Pro Access (Yearly) | $89.99 | per year |
| Ninja Pro (Lifetime) | $149.99 | one-time |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-workouts/id6742372753)

This advanced interval timer supports HIIT, Tabata, and circuit training with customizable work, rest, and cooldown periods. Stay focused with voice alerts, background operation, and music integration for any fitness routine.

**Highlights:** Customizable workouts, Pre-set & custom intervals, Voice & sound alerts, Music integration, Background operation, Dark & light mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Timer (weekly) | $4.99 | per 7 days |
| Premium Timer (monthly) | $12.99 | per month |
| Premium Timer (yearly) | $39.99 | per year |


## Frequently asked questions

### Is Ninja Fit free?

Ninja Fit is free to download, with in-app purchases available.

### Is Interval Timer free?

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

### Which has better reviews, Ninja Fit or Interval Timer?

Ninja Fit and Interval Timer are both rated 4.2 out of 5 on the App Store, from 10 and 10 ratings respectively.

### Do Ninja Fit or Interval Timer have ads?

Ninja Fit shows ads; Interval Timer does not.

### Which is updated more often, Ninja Fit or Interval Timer?

Ninja Fit ships an update every 2 weeks, and Interval Timer monthly. Most recently, Ninja Fit was updated on November 3, 2026 and Interval Timer on October 30, 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.*