# HIIT | Down Dog vs One Second Run

The clearest difference is ads: HIIT | Down Dog at none against One Second Run's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. HIIT | Down Dog sells 5 in-app purchases, starting at $12.99 per month and One Second Run sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

HIIT | Down Dog ships an update every 10 days, One Second Run every 5 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HIIT | Down Dog | One Second Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (48K ratings)](https://appshunter.io/ios/app/hiit-down-dog/id1491068090/reviews)** | — |
| Number of ratings | **48K** | — |
| Positive reviews | 89.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 64 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoga Buddhi Co.](https://appshunter.io/developer/983693693) | [SEONGHOON JEON](https://appshunter.io/developer/1727059032) |

## What reviewers say

### HIIT | Down Dog

[App page](https://appshunter.io/ios/app/hiit-down-dog/id1491068090)

This app offers dynamic, personalized HIIT workouts with over 1000 exercises to prevent plateaus. Customize workout length, intervals, and focus areas, with options to exclude specific movements. Enjoy motivating music and coach voices, with seamless syncing across devices.

**Highlights:** Over 1000 unique exercises, Customizable workout length and intervals, Selectable exercise focus areas, Exclude unwanted exercises, Dynamic music matching workout pace, Choice of coach voices, Syncs across devices

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HIIT Subscription | $12.99 | per month |
| All Access Subscription | $12.99 | per month |
| HIIT Subscription | $99.99 | per year |
| All Access Subscription | $99.99 | per year |
| All Access Subscription | $119.99 | per year |

**What reviewers like**

- 🏃🏼‍➡️ Excellent programs
- 👍 Highly customizable workouts
- 🤩 Motivating trainers and music
- 🙌 Affordable and accessible
- 💪 Effective for building strength and fitness

**What reviewers complain about**

- 🐛 App crashes and connection issues
- 🤔 Exercises can be overly complicated for beginners
- 🔇 Music volume issues
- 🤕 Concerns about potential injuries from certain exercises

**Reported bugs**

- App freezing and crashing
- Connectivity problems
- Inconsistent workout experiences

**Requested features**

- Preview of upcoming exercises
- Warm-up and cool-down options
- Ability to exclude certain exercises
- More detailed exercise instructions and form cues
- Offline workout downloads


### One Second Run

[App page](https://appshunter.io/ios/app/one-second-run/id6763670652)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |


## Frequently asked questions

### Is HIIT | Down Dog free?

HIIT | Down Dog is free to download, with in-app purchases available.

### Is One Second Run free?

One Second Run is free to download, with in-app purchases available.

### Do HIIT | Down Dog or One Second Run have ads?

One Second Run shows ads; HIIT | Down Dog does not.

### Which is updated more often, HIIT | Down Dog or One Second Run?

HIIT | Down Dog ships an update every 10 days, and One Second Run every 5 days. Most recently, HIIT | Down Dog was updated on November 8, 2026 and One Second Run on October 31, 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.*