Comparison

HIIT Timer / Interval Timer vs Klubbio.app

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

Head to head
About

HIIT Timer / Interval Timer

This app provides a customizable timer for high-intensity interval training. Easily set up warm-up, workout, and cool-down periods with adjustable intervals and counts. Personalize colors, sounds, and notifications for a tailored experience.

Highlights
  • Unlimited timer creation
  • Customizable intervals (warm-up, workout, cool-down)
  • Adjustable counts
  • Color and sound customization
  • Dark mode support
  • Background notifications
Features
Read full description

It's a timer app suitable for HIIT training. All features are completely free to use. Features: - Quick start-up and comfortable operability. Create unlimited timers. - Freely set warm-up, ready, workout, interval, cool-down minutes / seconds, and set counts. - Customize colors, texts, background notifications, sounds, speeches, vibrations, screen flashes and icon badges. - Dark mode - All free URL scheme: hiittimer:// --- * High-intensity interval training High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery periods until the point of exhaustion, which thereby relies on "the anaerobic energy releasing system almost maximally." * Procedure HIIT exercise sessions generally consist of a warm up period followed by repetitions of high-intensity exercises separated by medium intensity exercises for recovery, then a cool-down period. The high-intensity exercise should be done at near maximum intensity. The medium exercise should be about 50% intensity. The number of repetitions and length of each depends on the exercise, but maybe as little as three repetitions with just 20 seconds of intense exercise. The specific exercises performed during the high-intensity portions vary. Most of the research on HIIT has been done using a cycling ergometer, but other exercises like a rowing ergometer, running, stair climbing and uphill walking can also be effective. There is no specific formula for HIIT. Depending on one's level of cardiovascular development, the moderate-level intensity can be as slow as walking. A common formula involves a 2:1 ratio of work to recovery periods, for example, 30–40 seconds of hard sprinting alternated with 15–20 seconds of jogging or walking, repeated to failure. The entire HIIT session may last between four and thirty minutes, meaning that it is considered to be an excellent way to maximize a workout limited by time constraints. Use of a clock or timer is recommended to keep accurate times, the number of rounds, and intensity. Quoted from: https://en.wikipedia.org/wiki/High-intensity_interval_training

About

Klubbio.app

Features
Read full description

Klubbio is the app for club members, parents and coaches. Football clubs, dance schools, gyms, chess sections, hiking societies, youth programs: if your club has a schedule and a team, it fits here. When the club posts a training, class or event, you see it right away. If something gets cancelled or moved, you know before you leave the house, without digging through a group chat. Members, coaches and groups are all listed in the app, so you always know who's who and where you belong. You can also see your invoices, what you've paid and what's due next, so there are no awkward questions at the end of the month. The app takes on your club's colors and logo, so it feels like your club's own app rather than a generic tool. There is no self-registration. Your club administrator creates your account and invites you, and from then on you're in sync with everything the club publishes. Klubbio shows no ads, doesn't share your data with advertisers and doesn't build profiles. What the app knows about you comes from you or your club, and it's stored encrypted. For underage members, clubs collect parental consent. Privacy policy: https://klubbio.app/privacy-policy Account deletion: https://klubbio.app/delete-account Made in Sarajevo. Questions and suggestions: info@klubbio.app

Screenshots

HIIT Timer / Interval Timer4 screens
Klubbio.app4 screens

Verdict

The call

The clearest difference is ads: Klubbio.app at none against HIIT Timer / Interval Timer's shown. Klubbio.app also leads on update cadence (weekly vs every 2 months) and iOS requirement (13.0 vs 26.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HIIT Timer / Interval Timer ships an update every 2 months, Klubbio.app weekly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 6 level
HIIT Timer / Interval Timer versus Klubbio.app: the parameters behind the verdict, then further details
ParameterHIIT Timer / Interval TimerKlubbio.app
PriceFreeFree
Rating4.9 (14 ratings) — better—
Number of ratings14 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size12 MB44 MB
Age rating4+12+
DeveloperFugaPiyo Inc.RootId

In-app purchases

None

HIIT Timer / Interval Timer

No in-app purchases

None

Klubbio.app

No in-app purchases

Questions

Is HIIT Timer / Interval Timer free?
HIIT Timer / Interval Timer is free to download, with no in-app purchases.
Is Klubbio.app free?
Klubbio.app is free to download, with no in-app purchases.
Do HIIT Timer / Interval Timer or Klubbio.app have ads?
HIIT Timer / Interval Timer shows ads; Klubbio.app does not.
Which is updated more often, HIIT Timer / Interval Timer or Klubbio.app?
HIIT Timer / Interval Timer ships an update every 2 months, and Klubbio.app weekly. Most recently, HIIT Timer / Interval Timer was updated on October 4, 2026 and Klubbio.app on October 8, 2026.

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