Comparison

Ardo vs Interval Timer | HIIT Training

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Ardo

Features
Read full description

Ardo is the interval timer with an AI coach built in. Tell it your goal, your gear and how long you have โ€” and it builds a custom interval workout, names every exercise, and drops it straight into the timer. YOUR AI COACH Chat with Ardo like a real coach: "20-minute fat-burning HIIT, no equipment" or "kettlebell strength, 15 minutes." It designs the intervals, picks the exercises and shows each move on screen as you go. Save it to your workouts or start right away. 140+ READY WORKOUTS Tabata, HIIT, EMOM, AMRAP, For Time, CrossFit benchmarks (Fran, Cindy, Murph), Hyrox, circuits, running and boxing โ€” a big ring keeps you on pace with a 3-2-1 countdown, work/rest phases and a clear "next up" preview. BUILD YOUR OWN Lego-block editor with nested round groups; fork any preset, the original stays untouched. STAY ON TRACK Weekly chart, day streaks, full history and 20 badges. Beep on the 3-2-1 countdown plus haptics; 7 accent colors and Home Screen app icons; light and dark mode; 28 languages; daily reminders. Free: the full timer, all free workouts, the AI coach (3 free workouts), history, badges and reminders. Ardo Pro (one-time โ€” no subscription) unlocks unlimited AI coaching, the full benchmark library plus Hyrox and Hero WODs, the advanced builder, unlimited custom workouts, color themes plus app icons and Pro badges. Pay once. No ads. No tracking. The timer works fully offline.

About

Interval Timer | HIIT Training

Features
Read full description

Easy to use interval timer for iPhone and Apple Watch. Set the number of series, train time and rest time, with a colorful interface that makes the current state of the timer easy to read at a glance. Build your own workouts: - Repeat blocks you can nest to create rounds within rounds - Custom phases, each with its own name, color, sound and vibration - Drag and drop to reorder phases and blocks - Save workouts as presets and reuse them anytime - Presets sync between your phone and your Apple Watch Keep training with the screen off: the timer keeps running in the background and alerts you at every phase change. Perfect for any of your training activities: - HIIT Training - Tabata - Circuit training - Pomodoro ...and more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ardo4 screens
Interval Timer | HIIT Training4 screens

Verdict

The call

The clearest difference is ads: Ardo at none against Interval Timer | HIIT Training's shown. Ardo also leads on update cadence (every 6 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Ardo sells 1 one-off in-app purchase and Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ardo ships an update every 6 days, Interval Timer | HIIT Training fortnightly. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.

Scorecard2 real differences ยท 4 level
Ardo versus Interval Timer | HIIT Training: the parameters behind the verdict, then further details
ParameterArdoInterval Timer | HIIT Training
PriceFreeFree
Update frequencyEvery 6 days โ€” betterFortnightly
AdsNo โ€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, Apple Watch โ€” better
Requires iOS15.0 โ€” better16.0
Further details โ€” not scored
Size17 MB65 MB
Age rating4+4+
DeveloperRomana SamcovaLS PROGRAMACAO LTDA

In-app purchases

1 purchases

Ardo

One-time1
  • Ardo Pro$3.99
3 purchases

Interval Timer | HIIT Training

Subscriptions2
  • Interval Timer Pro Monthly$1.991 Month
  • Interval Timer Pro Annual7 Days trial$11.991 Year
One-time1
  • Interval Timer Pro Lifetime$29.99

Questions

Is Ardo free?
Ardo is free to download, with in-app purchases available.
Is Interval Timer | HIIT Training free?
Interval Timer | HIIT Training is free to download, with in-app purchases available.
Do Ardo or Interval Timer | HIIT Training have ads?
Interval Timer | HIIT Training shows ads; Ardo does not.
Which is updated more often, Ardo or Interval Timer | HIIT Training?
Ardo ships an update every 6 days, and Interval Timer | HIIT Training fortnightly. Most recently, Ardo was updated on September 22, 2026 and Interval Timer | HIIT Training on September 14, 2026.

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