Interval Timer | Cero

Name: Interval Timer | Cero
Rating: 4.7 (434 reviews)
Author: Flawless Studio LLC

By: Flawless Studio LLC

HIIT, Tabata Workouts and Yoga

Features & Capabilities

Cero Interval Timer is an intuitive, versatile workout timer designed for HIIT, Tabata, yoga, running and more. It offers a simple mode for quick setups and an advanced mode for highly customized sessions, all within a clean, intuitive interface.

Create and save custom intervals, manage multiple timers, and sync across devices. With Apple Watch support, heart rate monitoring, and Apple Health calorie tracking, your workouts and data stay in sync wherever you train.

User Growth & Download Statistics

App Sports

By:

Flawless Studio LLC

Rating:

4.70

(434) 1 new ratings

Version:

3.7.3 Last updated: 2025-06-18

Version code:

875670711

Creation date:

2017-07-15

Compatible devices:

Size:

36.27MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 82,879 ▼ 38

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Flawless Studio LLC

Apple Apps Store

https://apps.apple.com/us/app/interval-timer-cero/id1256319392

Website:

http://cero.app

User Reviews

Users praise Interval Timer | Cero for its versatility and ease of use, plus a welcome one-time price. It’s widely viewed as a top interval timer for HIIT and related routines. Recurring drawbacks include ads and forced updates, battery drain, weak end-of-interval alerts on devices, and usability gaps such as lack of background music support and typing time values rather than using plus/minus.

Pros

Versatile and feature-rich timer suitable for HIIT, Tabata, AMRAP, EMOM, and more.
Easy to set up, customize, and name timers with a clean, intuitive UI.
One-time purchase price with no mandatory subscription.
Reliable performance and strong user reputation; many call it the best interval timer.
Good value with extensive settings, even in the free version.

Cons

Ads appear after updates or force updates, which can be off-putting.
Battery drain/background usage when the app runs.
Cannot listen to music in the background while using the timer.
End-of-interval alerts (beep/haptic) can be weak or inaudible on phone/watch.
Time entry is cumbersome (plus/minus only; would like to type numbers) and occasional UI quirks like landscape rotation after updates.