# Interval Timer HIIT Workout vs Big Sendies

The clearest difference is ads: Big Sendies at none against Interval Timer HIIT Workout's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month and Big Sendies sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer HIIT Workout ships an update every 6 days, Big Sendies every 4 days. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Interval Timer HIIT Workout | Big Sendies |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (347 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-workout/id6741055716/reviews)** | — |
| Number of ratings | **347** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 99 MB | 34 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Roli LLC](https://appshunter.io/developer/1792785559) | [Just Go Up LLC](https://appshunter.io/developer/1882143218) |

## What reviewers say

### Interval Timer HIIT Workout

[App page](https://appshunter.io/ios/app/interval-timer-hiit-workout/id6741055716)

This app provides customizable interval timers for HIIT, Tabata, and circuit training. It features AI voice cues from celebrity impersonations, music integration, and automatic syncing with Apple Health and Apple Watch for comprehensive workout tracking.

**Highlights:** Customizable HIIT & Tabata timers, AI voice cues from celebrity impersonations, Music integration without interruption, Convert social media workouts to follow-alongs, Syncs with Apple Health & Apple Watch, Save and organize custom workouts, On-screen exercise cues

**Features:** Family Sharing, Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Yearly Subscription | $29.99 | per year |
| One Time Purchase | $19.99 | one-time |


### Big Sendies

[App page](https://appshunter.io/ios/app/big-sendies/id6759990294)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Big Sendies Pro | $2.99 | per month |
| Big Sendies Pro (Annual) | $24.99 | per year |


## Frequently asked questions

### Is Interval Timer HIIT Workout free?

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

### Is Big Sendies free?

Big Sendies is free to download, with in-app purchases available.

### Do Interval Timer HIIT Workout or Big Sendies have ads?

Interval Timer HIIT Workout shows ads; Big Sendies does not.

### Which is updated more often, Interval Timer HIIT Workout or Big Sendies?

Interval Timer HIIT Workout ships an update every 6 days, and Big Sendies every 4 days. Most recently, Interval Timer HIIT Workout was updated on November 12, 2026 and Big Sendies on November 13, 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.*