# Fitness Workout Timer vs Interval Timer for HIIT | Cero

The clearest difference is update cadence: Interval Timer for HIIT | Cero at every 3 days against Fitness Workout Timer's every 3 months. Interval Timer for HIIT | Cero also leads on ratings volume (438 vs 8). Fitness Workout Timer's advantage is review sentiment (100% vs 75%) and iOS requirement (12.0 vs 18.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Fitness Workout Timer sells 10 one-off in-app purchases and Interval Timer for HIIT | Cero sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Fitness Workout Timer holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Interval Timer for HIIT | Cero has 438 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of Fitness Workout Timer's written reviews are positive against 75% of Interval Timer for HIIT | Cero's.

Fitness Workout Timer ships an update every 3 months, Interval Timer for HIIT | Cero every 3 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Fitness Workout Timer | Interval Timer for HIIT | Cero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/fitness-workout-timer-tabata/id1035130456/reviews)** | [4.7 (438 ratings)](https://appshunter.io/ios/app/interval-timer-for-hiit-cero/id1256319392/reviews) |
| Number of ratings | 8 | **438** |
| Positive reviews | **100.0% of reviews** | 74.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 38 MB | 50 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Zinitt](https://appshunter.io/developer/868783199) | [Flawless Studio LLC](https://appshunter.io/developer/1228312508) |

## What reviewers say

### Fitness Workout Timer

[App page](https://appshunter.io/ios/app/fitness-workout-timer-tabata/id1035130456)

This interval timer helps users manage various fitness routines like Tabata, HIIT, and strength training. It features large, easy-to-read text, customizable sound alerts, and progress tracking for workouts and body measurements. A free BMI calculator is also included.

**Highlights:** Interval timer for Tabata, HIIT, Boxing, Rope Skipping, Easy-to-read large text display, Customizable sound effects for workout states, Free BMI calculator and body measurement tracker, Daily workout and weight progress records, Pro version with ad removal and backup features

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Pro Version 2021 | $1.99 | one-time |
| Upgrade Pro Version 2023 | $1.99 | one-time |
| Pro Version | $2.99 | one-time |
| Buy Me A Coffee | $2.99 | one-time |
| Pro Version + Snack | $3.99 | one-time |
| Pro Version 2021 | $4.99 | one-time |
| Pro Version + Coffee | $5.99 | one-time |
| Buy Me A Meal | $7.99 | one-time |
| Pro Version 2023 | $8.99 | one-time |
| Pro Version + Meal | $10.99 | one-time |


### Interval Timer for HIIT | Cero

[App page](https://appshunter.io/ios/app/interval-timer-for-hiit-cero/id1256319392)

Create custom interval workouts for HIIT, Tabata, and circuit training. Features adaptive heart rate training, Siri integration, and Apple Watch support. Track progress and share your custom routines.

**Highlights:** Customizable interval programming, Adaptive heart rate training, Siri and Shortcuts integration, Apple Watch app, Workout history and sharing, Live Activities and Dynamic Island support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cero Pro Monthly | $2.99 | per month |
| Cero Pro | $14.99 | one-time |

**What reviewers like**

- 👍 Simple and straightforward
- 👍 Very practical and customizable
- 👍 Great for HIIT and Tabata
- 👍 Clear design and easy to use
- 👍 Good value, no subscription

**What reviewers complain about**

- 🔋 Drains battery
- 🎶 Music playback interrupted
- ⚠️ Ads interrupt timers
- 🔊 Weak or non-functional sound/haptics
- 🔄 Forced updates

**Reported bugs**

- App runs in background draining battery
- Rotation broke after update
- Apple workout app overrides Cero app on Apple Watch
- Interval signals too weak or not working

**Requested features**

- Ability to group timers
- Option to add warm-up and cool-down features
- Ability to type numbers for time adjustment
- Timer sounds through headphones or interrupting music
- Ability to change exercise names


## Frequently asked questions

### Is Fitness Workout Timer free?

Fitness Workout Timer is free to download, with in-app purchases available.

### Is Interval Timer for HIIT | Cero free?

Interval Timer for HIIT | Cero is free to download, with in-app purchases available.

### Which has better reviews, Fitness Workout Timer or Interval Timer for HIIT | Cero?

Fitness Workout Timer is rated higher. Fitness Workout Timer averages 4.9 out of 5 from 8 ratings, while Interval Timer for HIIT | Cero averages 4.7 from 438 ratings.

### Do Fitness Workout Timer or Interval Timer for HIIT | Cero have ads?

Both Fitness Workout Timer and Interval Timer for HIIT | Cero show ads.

### Which is updated more often, Fitness Workout Timer or Interval Timer for HIIT | Cero?

Fitness Workout Timer ships an update every 3 months, and Interval Timer for HIIT | Cero every 3 days. Most recently, Fitness Workout Timer was updated on November 2, 2026 and Interval Timer for HIIT | Cero on November 6, 2026.

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