# IntervalTimer(x) vs NextRep Challenge

The clearest difference is price: IntervalTimer(x) at Free against NextRep Challenge's $5.99. NextRep Challenge's advantage is update cadence (every 3 days vs every 3 weeks) and ratings volume (4 vs 1). On rating, ads, in-app purchases and device support there is nothing between them.

IntervalTimer(x) is free to download; NextRep Challenge costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for IntervalTimer(x) against 5.0 for NextRep Challenge. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

IntervalTimer(x) ships an update every 3 weeks, NextRep Challenge every 3 days. The most recent releases landed on September 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | IntervalTimer(x) | NextRep Challenge |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/intervaltimerx/id6745199760/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/nextrep-challenge/id6746970790/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Free** | Paid |
| Size | 9 MB | 22 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [ShapeHaven Innovations LLC](https://appshunter.io/developer/1747127977) | [Mohamad Abuhamdeh](https://appshunter.io/developer/1815638493) |

## What reviewers say

### IntervalTimer(x)

[App page](https://appshunter.io/ios/app/intervaltimerx/id6745199760)

This app provides a customizable interval timer for workouts, focus sessions, and breaks. It offers audio cues, visual progress, and tracks workout history locally. Optional body metrics can be entered for calorie estimates, all stored securely on your device.

**Highlights:** Customizable work/rest/sets intervals, Audio cues for transitions, Workout history log, Local calorie estimates, Offline functionality, Siri Shortcuts integration

**Features:** macOS Compatibility

**In-app purchases:** none


### NextRep Challenge

[App page](https://appshunter.io/ios/app/nextrep-challenge/id6746970790)

Engage in fitness challenges with friends or the community using AI rep counting and tracking for various metrics. Compete on leaderboards, build habits, and motivate each other through custom or community events. Integrates with Apple Health and popular wearables.

**Highlights:** AI rep counter for exercises, Track calories, steps, distance, workout minutes, Join or create custom fitness challenges, Live leaderboards and personal best tracking, Community and private group chat, Apple Health and wearable integration

**In-app purchases:** none


## Frequently asked questions

### Is IntervalTimer(x) free?

IntervalTimer(x) is free to download, with no in-app purchases.

### Is NextRep Challenge free?

NextRep Challenge costs $5.99, with no in-app purchases.

### Which has better reviews, IntervalTimer(x) or NextRep Challenge?

IntervalTimer(x) and NextRep Challenge are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do IntervalTimer(x) or NextRep Challenge have ads?

Neither IntervalTimer(x) nor NextRep Challenge shows ads.

### Which is updated more often, IntervalTimer(x) or NextRep Challenge?

IntervalTimer(x) ships an update every 3 weeks, and NextRep Challenge every 3 days. Most recently, IntervalTimer(x) was updated on September 17, 2026 and NextRep Challenge on October 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.*