HIIT | Down Dog vs One Second Run
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HIIT | Down Dog
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.
- 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
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With pre-recorded videos, you get bored, and so do your muscles! Avoid the dreaded workout plateau and get ripped with HIIT. With over 1000+ different exercises, you’ll never get the same workout twice! BEGINNER FRIENDLY If you’re brand new to HIIT, Level 0 is the perfect place to start! Use your own body weight to get your heart rate up and efficiently burn fat while building muscle - no fancy props required. Our high definition videos and clear instructions guide you through each HIIT exercise. It’s like having your own personal trainer! BUILD THE WORKOUT YOU WANT Set the total length of your workout Tailor the length of your Exercise Length and Recovery intervals Choose from 4 different levels of Upper Body, Lower Body, and Core to get exercises that challenge you MIX FEATURE Choose from presets like Leg Day, Cardio Killer, Total Body - No Jumps, or our favorite, Bringing Sexy Back, or create your own mix of aerobic, core, glutes, legs and upper body Exclude exercises that don’t work for you: Sore wrists? Say goodbye to table tops and planks. Tired of burpees? No problem, you’ll never have to hop back again. DYNAMIC CHANGING MUSIC Pick the type of music that gets you hyped, and we supply beats that match your movement and help you push hard to the last second of each interval. CHOOSE YOUR VOICE Select your favorite coach to keep you motivated as you sweat. SYNC BETWEEN DEVICES Automatically syncs across all your devices. Integrates with the Apple Health app! Down Dog's terms and conditions can be found at https://www.downdogapp.com/terms Down Dog's privacy policy can be found at https://www.downdogapp.com/privacy
One Second Run
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One Second Run helps you build a running or walking habit with a simple timer that grows by one second each day. Start with a comfortable first goal, complete today's timer, and tomorrow's target becomes just one second longer. The app keeps the experience light: no GPS, no pace charts, no account, and no pressure. Features: - Daily run or walk timer - One-second daily increase - Onboarding to choose your first start time - Streak and history view - Optional notes for each session - Local reminders - Live Activity and Dynamic Island timer display - Settings to reset progress or choose a new start time One Second Run is designed for consistency. Open the app, start today's timer, finish, and keep the line moving.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | HIIT | Down Dog | One Second Run |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (48K ratings) — better | — |
| Positive reviews | 89.1% of reviews | — |
| Number of ratings | 48K — better | — |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 101 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoga Buddhi Co. | SEONGHOON JEON |
Bugs and requests
HIIT | Down Dog
Reported bugs
3 issues- App freezing and crashing
- Connectivity problems
- Inconsistent workout experiences
Requested features
6 requests- 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
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- Integration with fitness tracking devices
One Second Run
Not enough reviews yet to summarise bugs or requests.
In-app purchases
HIIT | Down Dog
- HIIT Subscription$12.991 Month
- All Access Subscription2 variants$12.991 Month
- HIIT Subscription$99.991 Year
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- All Access Subscription3 variants$99.991 Year
- All Access Subscription$119.991 Year
One Second Run
- Remove ads$0.99
Questions
Is HIIT | Down Dog free?
Is One Second Run free?
Do HIIT | Down Dog or One Second Run have ads?
Which is updated more often, HIIT | Down Dog or One Second Run?
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