# BLK BOX vs Intervale

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.

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.

## The numbers

| Metric | BLK BOX | Intervale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (44 ratings)](https://appshunter.io/ios/app/blk-box/id6753706320/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/intervale-interval-timer/id6821462381/reviews) |
| Number of ratings | **44** | 5 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 55 MB | 10 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TeamUp Sports](https://appshunter.io/developer/1449504626) | [Stephen Dawson](https://appshunter.io/developer/6775208380) |

## What reviewers say

### BLK BOX

[App page](https://appshunter.io/ios/app/blk-box/id6753706320)

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.

**Highlights:** Book classes online, Create custom exercise programs, Track workout progress, Monitor body measurements, Direct contact with club staff, Community interaction, HealthKit integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Intervale

[App page](https://appshunter.io/ios/app/intervale-interval-timer/id6821462381)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is BLK BOX free?

BLK BOX is free to download, with no in-app purchases.

### Is Intervale free?

Intervale is free to download, with no in-app purchases.

### Which has better reviews, BLK BOX or Intervale?

BLK BOX is rated higher. BLK BOX averages 4.9 out of 5 from 44 ratings, while Intervale averages 4.8 from 5 ratings.

### Do BLK BOX or Intervale have ads?

Neither BLK BOX nor Intervale shows ads.

### Which is updated more often, BLK BOX or Intervale?

BLK BOX ships an update every 7 months, and Intervale every 5 days. Most recently, BLK BOX was updated on November 9, 2026 and Intervale on November 10, 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.*