# Interval Timer vs TimerFlex

The clearest difference is review sentiment: TimerFlex at 100% against Interval Timer's 29%. TimerFlex also leads on update cadence (weekly vs every 5 months). Interval Timer's advantage is rating (4.5 vs 3.0) and ads (none vs shown). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $1.99 per month and TimerFlex sells 7 in-app purchases, starting at $1.49 per 7 days. Whichever you choose, the download price is not the number that matters.

Interval Timer holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Interval Timer has 149 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 29% of Interval Timer's written reviews are positive against 100% of TimerFlex's, so the app with the better star average is not the one people write more warmly about.

Interval Timer ships an update every 5 months, TimerFlex weekly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Interval Timer | TimerFlex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (149 ratings)](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/timerflex-wod-interval-timer/id6738749653/reviews) |
| Number of ratings | **149** | 2 |
| Positive reviews | 29.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 79 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [DMYTRO DOLOTOV](https://appshunter.io/developer/1536992504) | [Plainworks Teknoloji Limited Sirketi](https://appshunter.io/developer/1782187835) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573)

This versatile timer assists with various fitness routines, including HIIT, Tabata, and boxing. It also functions as a productivity timer for tasks like Pomodoro. Easily configure intervals, sets, and rest periods for personalized workouts.

**Highlights:** HIIT and Tabata workout timer, Boxing and martial arts round timer, Productivity and Pomodoro timer, Customizable interval and set configurations, Templates for quick setup, Supports various fitness exercises

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access | $1.99 | per month |
| Lifetime Access -50% | $4.99 | one-time |
| Lifetime Access | $9.99 | one-time |


### TimerFlex

[App page](https://appshunter.io/ios/app/timerflex-wod-interval-timer/id6738749653)

This app uses AI to instantly create custom workout timers from whiteboard photos or text descriptions. It offers various pre-built formats, real-time heart rate tracking, and detailed workout history. Advanced features like Apple Watch sync and unlimited AI generation are available with a subscription.

**Highlights:** AI workout generation from photos/text, Apple Watch sync with haptic cues, Real-time heart rate and calorie tracking, 5 purpose-built workout formats (For Time, AMRAP, EMOM, Tabata, Custom), 1RM calculator, Voice coach and audio cues, Workout history and monthly stats

**Features:** Apple Watch app

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $1.49 | per 7 days |
| TimerFlex Monthly | $3.49 | per month |
| 3 Months subscription | $8.49 | per 3 months |
| TimerFlex Annual Offer | $12.99 | per year |
| TimerFlex Annual | $24.99 | per year |
| Ad-Free | $0.99 | one-time |
| TimerFlex Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is Interval Timer free?

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

### Is TimerFlex free?

TimerFlex is free to download, with in-app purchases available.

### Which has better reviews, Interval Timer or TimerFlex?

Interval Timer is rated higher. Interval Timer averages 4.5 out of 5 from 149 ratings, while TimerFlex averages 3.0 from 2 ratings.

### Do Interval Timer or TimerFlex have ads?

TimerFlex shows ads; Interval Timer does not.

### Which is updated more often, Interval Timer or TimerFlex?

Interval Timer ships an update every 5 months, and TimerFlex weekly. Most recently, Interval Timer was updated on September 22, 2026 and TimerFlex on September 21, 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.*