Tranquil vs Interval Timer | HIIT Training
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tranquil
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Tranquil: Sleep & Relax helps you create a calm and peaceful atmosphere through immersive ambient environments, relaxing soundscapes, and focus experiences. Whether you want to unwind after a long day, improve concentration, create a peaceful background atmosphere, or enjoy calming sleep environments, Tranquil offers a simple and distraction-free experience designed for relaxation. Features include: • Relaxing ambient environments • Sleep-focused calming scenes • Nature-inspired visuals and soundscapes • Focus and mindfulness experiences • Peaceful audio environments • Minimal and easy-to-use interface • Premium content available through optional in-app purchases Tranquil does not require account creation or login to use the application. Some features and content are available through optional subscriptions and one-time purchases. Payments are processed securely through Apple In-App Purchase. Privacy Policy: https://futurewatch.co/privacy-tranquil-tv Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our website: https://www.futurewatch.co
Interval Timer | HIIT Training
This app provides a customizable interval timer for various training activities like HIIT and Tabata. Users can build custom workouts with named phases, sounds, and vibrations, and save them as presets that sync across devices. It also supports background operation with screen off.
- Customizable workout builder
- Nestable repeat blocks
- Custom phases with names, colors, sounds, and vibrations
- Drag and drop reordering
- Save and reuse workout presets
- Syncs between iPhone and Apple Watch
- Background operation with screen off
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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 - Sign in to back up your timers, settings and sounds and pick them up on your other devices (Pro) 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
Verdict
Tranquil and Interval Timer | HIIT Training are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Tranquil sells 10 in-app purchases, starting at $4.99 per month 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.
Tranquil ships an update fortnightly, Interval Timer | HIIT Training every 10 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.
| Parameter | Tranquil | Interval Timer | HIIT Training |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly | Every 10 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad, Apple Watch |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 147 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Future Watch Technologies (Private) Limited | LS PROGRAMACAO LTDA |
In-app purchases
Tranquil
- Tranquil Monthly Premium$4.991 Month
- Crackling Fire$1.99
- Distant Thunder$1.99
- Wind Chimes$1.99
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- Autumn Leaves$1.99
- First Snow$1.99
- Nature Escapes Pack$3.99
- Calm and Grounded Pack$3.99
- Study Pack$3.99
- Sleep Pack$3.99
Interval Timer | HIIT Training
- Interval Timer Pro Monthly$1.991 Month
- Interval Timer Pro Annual7 Days trial$11.991 Year
- Interval Timer Pro Lifetime$29.99
Questions
Is Tranquil free?
Is Interval Timer | HIIT Training free?
Do Tranquil or Interval Timer | HIIT Training have ads?
Which is updated more often, Tranquil or Interval Timer | HIIT Training?
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