BLK BOX vs Intervale
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BLK BOX
Manage your health and fitness journey with this app. Book classes, create custom workout plans, and track your physical progress. Connect with other members and stay updated on club news and offers.
- Book classes online
- Create custom exercise programs
- Track workout progress
- Monitor body measurements
- Direct contact with club staff
- Community interaction
- HealthKit integration
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Guiding you through your health and fitness journey! - Book classes online in just a few clicks - Create your own exercise programmes or select from a range provided by the club - Track your progress from all your workouts - Keep track of your body measurements and progress - Contact club staff directly - Interact and get to know your fellow members - See all the latest club news, offers and events - Refer Friends to the club online - Recipes Library Apple Health App Integration Track your progress with our HealthKit app integration to import and measure your daily steps, distance or calories burnt. Also use HealthKit to import your data from a range of different wearable devices.
Intervale
Create custom interval timers for various workouts, including HIIT, rehab, and stretching. Get spoken cues and haptic feedback to guide you through each step. Seamlessly integrate with Apple Health to track your progress.
- Customizable named steps with work/rest times
- Spoken cues and haptic feedback
- Background operation with screen locked
- Routine creation for multiple timers
- Apple Health integration for workout tracking
- Siri and Shortcuts support
- Timer sharing via links or QR codes
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Intervale is an interval timer for HIIT, Tabata, circuits, physio and rehab exercises, and stretching. Build a timer from your own named steps, give each its own work and rest time, and run it with spoken cues and haptics on iPhone or Apple Watch. - Build named timers from your own steps, each with its own work and rest time. - Add both sides of an exercise in one go, and keep the left and right times in step if you like. - Repeat for as many rounds as you like, with an optional rest between rounds. - Big, glanceable countdown with colour-coded work and rest, and what comes next always on screen. - Sounds, spoken cues and haptics mark every change, so you never need to look at your phone. They play over your music without turning it down. - Keeps running in the background and with the screen locked. - Choose the cue sound and volume, and set the sound and haptics for each timer separately. - Favourite timers and routines start from the Home Screen icon's quick actions. ROUTINES - Put timers together in a routine, in the order you want, with a break between each one. - A break can be a set time, or wait until you tap Start now. - Timers are linked, not copied, so changing a timer changes it in every routine that uses it. APPLE HEALTH - Save finished timers to Apple Health as a workout (HIIT, strength, core, yoga, Pilates and more) or as mindful minutes. Pick the type for each timer. - Your step names are saved with the workout, so you can see the work in the Health app. - On Apple Watch, workouts record your heart rate and active calories and count towards your Activity rings. - On iPhone with iOS 26 or later, the workout is recorded live and Apple measures your active calories. Intervale never estimates calories itself. - It is optional. Every timer works the same without Apple Health, and you can switch it off at any time. - Your Health data stays on your device and is never sent anywhere. SIRI AND SHORTCUTS - Say "Start Leg day rehab in Intervale" on iPhone or Apple Watch to run one of your timers. - Ask "What timers do I have in Intervale" to hear your list. - Both are available in the Shortcuts app too, so you can add a timer to an automation or your Home Screen. SHARE AND DISCOVER - Send a timer as a link in one tap, with no upload, or make a page with a QR code that you can set to expire or stop. - Add timers other people share with you, and see how often your own links were viewed and added. - Discover ready-made timers, and change them once they are yours. - Ask for one of your shared timers to be featured on Discover. It is reviewed before anyone else sees it. APPLE WATCH - Run your timers from the wrist with taps for every change, even with your wrist down. - Sessions file into History on your iPhone. ACCOUNTS (OPTIONAL) - Sign in with Apple, Google or an email code. You never have to: every timer works without an account. - Your timers appear on every device you sign in on. - Your shared links stay saved with your account, including on a new phone. - Delete your account in the app at any time. HISTORY AND FOLDABLES - History shows the workouts you have finished, with calories where they were saved. - On iPhone Duo, opened out sideways, your timers and the editor sit side by side, and the running timer shows the steps still to come. No ads, no tracking, no analytics. Without an account, everything stays on your device.
Screenshots
Verdict
The clearest difference is update cadence: Intervale at every 5 days against BLK BOX's every 7 months. BLK BOX's advantage is ratings volume (44 vs 5) and iOS requirement (14.0 vs 17.0). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for BLK BOX against 4.8 for Intervale. That said, the two scores are not equally well evidenced: BLK BOX has 44 ratings behind it against 5, so its average is the more settled of the two.
BLK BOX ships an update every 7 months, Intervale every 5 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.
| Parameter | BLK BOX | Intervale |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (44 ratings) — better | 4.8 (5 ratings) |
| Number of ratings | 44 — better | 5 |
| Update frequency | Every 7 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 55 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | TeamUp Sports | Stephen Dawson |
Customer experience
BLK BOX
Intervale
In-app purchases
BLK BOX
No in-app purchases
Intervale
No in-app purchases









