# TimerFlex vs Interval Timer

The clearest difference is review sentiment: TimerFlex at 100% against Interval Timer's 0%. Interval Timer's advantage is rating (5.0 vs 3.0) and ads (none vs shown). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. TimerFlex sells 10 in-app purchases, starting at $1.49 per 7 days and Interval Timer sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Interval Timer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 100% of TimerFlex's written reviews are positive against 0% of Interval Timer's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | TimerFlex | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/timerflex-wod-interval-timer/id6738749653/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-circuit-and-hiit/id6810989259/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 101 MB | 38 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Plainworks Teknoloji Limited Sirketi](https://appshunter.io/developer/1782187835) | [ShenZhen Niddles Technology Co., Ltd.](https://appshunter.io/developer/1829412162) |

## What reviewers say

### 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TimerFlex Weekly | $1.49 | per 7 days |
| TimerFlex Weekly | $2.19 | per 7 days |
| TimerFlex Monthly | $3.49 | per month |
| TimerFlex Pro Monthly | $3.49 | per month |
| TimerFlex Quarterly | $8.49 | per 3 months |
| TimerFlex Annual | $12.99 | per year |
| TimerFlex Annual | $24.99 | per year |
| TimerFlex Annual | $24.99 | per year |
| TimerFlex Ad-Free | $0.99 | one-time |
| TimerFlex Lifetime | $24.99 | one-time |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-circuit-and-hiit/id6810989259)

This app provides a flexible and intuitive timer for various training routines, including HIIT, circuit, and boxing. It offers clear audio and visual cues to guide users through work and rest intervals, with options for custom sequences and workout history review. Upgrade to Pro for advanced features and unlimited timers.

**Highlights:** Customizable work and rest durations, Multiple rounds and sets configuration, Preparation, break, and cool-down timers, Named intervals and custom sequences, Audio, vibration, and spoken guidance, Workout history and calendar view, Quick-start presets and saved routines

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $19.99 | per month |
| Yearly Subscription | $59.99 | per year |


## Frequently asked questions

### Is TimerFlex free?

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

### Is Interval Timer free?

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

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

Interval Timer is rated higher. TimerFlex averages 3.0 out of 5 from 2 ratings, while Interval Timer averages 5.0 from 1 ratings.

### Do TimerFlex or Interval Timer have ads?

TimerFlex shows ads; Interval Timer does not.

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

TimerFlex ships an update weekly, and Interval Timer weekly. Most recently, TimerFlex was updated on November 8, 2026 and Interval Timer on November 13, 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.*