Comparison

BS vs HIIT

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

Head to head
About

BS

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
Read full description

Focus on your workout, not on ads. This BS Free Interval Timer satisfies your basic timer needs without any mid-workout distractions. Freely select the number of rounds, time per round, time in between rounds, or time before starting. Adjust any sound effects to your personal preference. If you are looking for a basic timer, this one is simple, effective and absolutely BS free.

About

HIIT

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
Read full description

Tired of tapping through menus before a run? Interval Running is a simple HIIT, tabata, and interval timer - say what you want, it builds the intervals, you run. Just tell it what you want. Say something like "eight rounds, 30 seconds fast, 30 seconds easy" and the timer builds your program right then - no forms, no menus, no fields to fill in before you can start running. Prefer to build it yourself? You can: - Set work and rest by time, distance, or leave it open - Choose HIIT, tabata, fartlek, tempo, or plain run/walk intervals - Save a routine once, reuse it whenever you want Everything you need is on the screen while you run, no extra taps. - Interval, pace, cadence, and heart rate at a glance - Audio cues tell you when to switch, no need to look down - Full Apple Watch support - leave your phone at home You don't want a training plan, a coach, or a program - you want a timer that starts and stops intervals exactly when you tell it to. You want to set up a workout on the way to the track without stopping to tap through screens. You do tabata or HIIT sessions and just need something that counts rounds. You run intervals on your own terms and don't want an app deciding your pace for you. After each run, see your intervals, pace, and heart rate. Export GPX files, sync with Apple Health, and connect an external heart rate monitor if you use one. Health app integration With your permission, your interval runs count toward Activity Rings, including the Exercise and Move rings. Say it. Start it. Run. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BS3 screens
HIIT4 screens

Verdict

The call

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.

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
BS versus HIIT: the parameters behind the verdict, then further details
ParameterBSHIIT
PriceFreeFree
Rating—4.3 (34 ratings) — better
Positive reviews91.7% of reviews — better57.1% of reviews
Number of ratings—34 — better
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size2 MB83 MB
Age rating4+4+
DeveloperSimon PlovytMaxim Kazakov

Customer experience

BS

All ratings19 ratings
Positive89.5%
Neutral0.0%
Negative10.5%
Written reviews12 reviews
Positive91.7%
Neutral8.3%
Negative0.0%

HIIT

All ratings34 ratings
Positive82.4%
Neutral2.9%
Negative14.7%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

In-app purchases

None

BS

No in-app purchases

8 purchases

HIIT

Subscriptions7
  • Premium Monthly Day 2$0.991 Month
  • Premium Weekly7 Days trial$3.997 Days
  • Premium Monthly Day 1$4.991 Month
Show 4 more
  • Premium Monthly7 Days trial$9.991 Month
  • Premium 3 Months$19.993 Months
  • Premium Annual Special Offer7 Days trial$29.991 Year
  • Interval Run Premium Yearly7 Days trial$59.991 Year
One-time1
  • Intreval Run Premium Lifetime$39.99

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.

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