Comparison

HIIT Timer / Interval Timer vs Blackall100

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

Blackall100

Features
Read full description

The official Blackall100 app brings the information you need for race weekend into one easy place. Whether you’re racing the 100km, 50km or 21km, use the app to stay organised before and during the event. Access: - Official athlete guide - Mandatory gear information - Race weekend schedule - Announcements and event updates - Course information - Drop bag details - Local area information - Event merchandise - Sponsors and event content Blackall100 takes place in the Sunshine Coast Hinterland and follows the spectacular Sunshine Coast Hinterland Great Walk, with 100km, 50km and 21km distances. Keep the app handy throughout race weekend so the latest event information is easy to find when you need it. Blackall100 is presented by Run Queensland and wildearth. App created with Matchday Pro.

Screenshots

HIIT Timer / Interval Timer4 screens
Blackall1004 screens

Verdict

The call

The clearest difference is ads: Blackall100 at none against HIIT Timer / Interval Timer's shown. Blackall100 also leads on update cadence (every 9 days vs every 2 months) and iOS requirement (15.0 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, Blackall100 every 9 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 6 level
HIIT Timer / Interval Timer versus Blackall100: the parameters behind the verdict, then further details
ParameterHIIT Timer / Interval TimerBlackall100
PriceFreeFree
Rating4.9 (21 ratings) — better—
Number of ratings21 — better—
Update frequencyEvery 2 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size12 MB118 MB
Age rating4+17+
DeveloperFugaPiyo Inc.Cockatoo Marketplaces Pty Ltd

In-app purchases

None

HIIT Timer / Interval Timer

No in-app purchases

None

Blackall100

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 Blackall100 free?
Blackall100 is free to download, with no in-app purchases.
Do HIIT Timer / Interval Timer or Blackall100 have ads?
HIIT Timer / Interval Timer shows ads; Blackall100 does not.
Which is updated more often, HIIT Timer / Interval Timer or Blackall100?
HIIT Timer / Interval Timer ships an update every 2 months, and Blackall100 every 9 days. Most recently, HIIT Timer / Interval Timer was updated on October 24, 2026 and Blackall100 on October 6, 2026.

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