# Interval Timer ▸ HIIT & Tabata vs TDB App

The clearest difference is in-app purchases: Interval Timer ▸ HIIT & Tabata at none against TDB App's 1. Interval Timer ▸ HIIT & Tabata also leads on device support (4 vs 2). TDB App's advantage is update cadence (weekly vs every 11 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. TDB App sells 1 in-app purchase, starting at $289.99 per year. Interval Timer ▸ HIIT & Tabata asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Interval Timer ▸ HIIT & Tabata against 5.0 for TDB App. Both are backed by a comparable volume of ratings — 9 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Interval Timer ▸ HIIT & Tabata ships an update every 11 months, TDB App weekly. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Interval Timer ▸ HIIT & Tabata | TDB App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (9 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id6469007234/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/tdb-app/id6779702294/reviews) |
| Number of ratings | **9** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 16 MB | 147 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad, Apple TV, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Juxhin Bakalli Technologies](https://appshunter.io/developer/1711254538) | [TDB Productions LLC](https://appshunter.io/developer/6779702296) |

## What reviewers say

### Interval Timer ▸ HIIT & Tabata

[App page](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id6469007234)

This app helps you structure and time your workouts with customizable intervals, alerts, and repeating sets. It's ideal for various fitness activities like HIIT, Tabata, boxing, running, and circuit training.

**Highlights:** Customizable intervals (work, rest, recovery), Customizable sound and visual alerts, Repeating sets programming, Countdown timer with visual cues, Supports HIIT, Tabata, boxing, running, circuit training, yoga, meditation

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

**In-app purchases:** none


### TDB App

[App page](https://appshunter.io/ios/app/tdb-app/id6779702294)

This physician-backed community offers evidence-based guidance and real-life support for parents from conception through the toddler years. Connect with other parents, access structured courses, and join live Q&As with doctors.

**Highlights:** Physician-backed guidance, Community support for parents, Support from conception to toddler years, Structured courses, Live Q&As with doctors, Evidence-based medical information

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Plan | $289.99 | per year |


## Frequently asked questions

### Is Interval Timer ▸ HIIT & Tabata free?

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

### Is TDB App free?

TDB App is free to download, with in-app purchases available.

### Which has better reviews, Interval Timer ▸ HIIT & Tabata or TDB App?

Interval Timer ▸ HIIT & Tabata and TDB App are both rated 5.0 out of 5 on the App Store, from 9 and 7 ratings respectively.

### Do Interval Timer ▸ HIIT & Tabata or TDB App have ads?

Neither Interval Timer ▸ HIIT & Tabata nor TDB App shows ads.

### Which is updated more often, Interval Timer ▸ HIIT & Tabata or TDB App?

Interval Timer ▸ HIIT & Tabata ships an update every 11 months, and TDB App weekly. Most recently, Interval Timer ▸ HIIT & Tabata was updated on October 11, 2026 and TDB App on October 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.*