# Interval timer · Hiit timer vs VoltTimer

The clearest difference is ads: VoltTimer at none against Interval timer · Hiit timer's shown. Interval timer · Hiit timer's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (14.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Interval timer · Hiit timer sells 3 in-app purchases, starting at $2.99 per 7 days and VoltTimer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Interval timer · Hiit timer ships an update weekly, VoltTimer every 3 weeks. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Interval timer · Hiit timer | VoltTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-timer/id6479285382/reviews)** | — |
| Number of ratings | **16** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 6 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [UnitVN.,JSC](https://appshunter.io/developer/1639973914) | [CherneyWerk LLC](https://appshunter.io/developer/1887149773) |

## What reviewers say

### Interval timer · Hiit timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-timer/id6479285382)

This workout app offers customizable interval and rest times, with audio guidance that continues even when the app is in the background. Track your progress with detailed history and statistics, and easily repeat past workouts. It's designed to enhance your fitness routine without interrupting your music.

**Highlights:** Customizable interval and rest times, Audio guidance (voice or beeps), Background audio support, Workout history and statistics, Repeat previous workouts, Non-interference with music

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Monthly | $4.99 | per month |
| Lifetime package | $19.99 | one-time |


### VoltTimer

[App page](https://appshunter.io/ios/app/volttimer-workout-timer/id6760988281)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VoltTimer Pro | $3.99 | one-time |


## Frequently asked questions

### Is Interval timer · Hiit timer free?

Interval timer · Hiit timer is free to download, with in-app purchases available.

### Is VoltTimer free?

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

### Do Interval timer · Hiit timer or VoltTimer have ads?

Interval timer · Hiit timer shows ads; VoltTimer does not.

### Which is updated more often, Interval timer · Hiit timer or VoltTimer?

Interval timer · Hiit timer ships an update weekly, and VoltTimer every 3 weeks. Most recently, Interval timer · Hiit timer was updated on October 1, 2026 and VoltTimer on October 7, 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.*