# BS vs HIIT

The clearest difference is in-app purchases: BS at none against HIIT's 8. BS also leads on review sentiment (92% vs 57%) and iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HIIT sells 8 in-app purchases, starting at $0.99 per month. BS asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | BS | HIIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (34 ratings)](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984/reviews)** |
| Number of ratings | — | **34** |
| Positive reviews | **91.7% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 83 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Simon Plovyt](https://appshunter.io/developer/1492758789) | [Maxim Kazakov](https://appshunter.io/developer/1290266003) |

## What reviewers say

### BS

[App page](https://appshunter.io/ios/app/bs-free-interval-timer/id1492758790)

A straightforward workout timer designed for focus, offering customizable rounds, intervals, and start delays without any advertisements. Adjust sound effects to suit your training style for a distraction-free experience.

**Highlights:** Customizable number of rounds, Adjustable time per round, Configurable rest intervals, Pre-workout countdown, Adjustable sound effects, Ad-free experience

**In-app purchases:** none


### HIIT

[App page](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984)

Design and track custom interval running workouts with real-time data and audio cues. This app offers detailed post-run analysis and integrates with Apple Health and Apple Watch for phone-free training.

**Highlights:** Customizable intervals (time, distance, open), Support for HIIT, tempo, fartlek, pyramid, progression workouts, Real-time tracking of pace, cadence, heart rate, Audio cues for guidance, Phone-free Apple Watch operation, Post-run analysis and GPX export, Apple Health integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Day 2 | $0.99 | per month |
| Premium Weekly | $3.99 | per 7 days |
| Premium Monthly Day 1 | $4.99 | per month |
| Premium Monthly | $9.99 | per month |
| Premium 3 Months | $19.99 | per 3 months |
| Premium Annual Special Offer | $29.99 | per year |
| Interval Run Premium Yearly | $59.99 | per year |
| Intreval Run Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is BS free?

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

### Is HIIT free?

HIIT is free to download, with in-app purchases available.

### Do BS or HIIT have ads?

Neither BS nor HIIT shows ads.

### Which is updated more often, BS or HIIT?

BS ships an update every 2 weeks, and HIIT every 2 weeks. Most recently, BS was updated on October 11, 2026 and HIIT on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*