# VoltTimer vs Ntrval Timer

The clearest difference is in-app purchases: Ntrval Timer at none against VoltTimer's 1. Ntrval Timer also leads on iOS requirement (15.0 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. VoltTimer sells 1 one-off in-app purchase. Ntrval Timer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | VoltTimer | Ntrval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 6 MB | 16 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CherneyWerk LLC](https://appshunter.io/developer/1887149773) | [Blake Garcia](https://appshunter.io/developer/6782465594) |

## What reviewers say

### 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 |


### Ntrval Timer

[App page](https://appshunter.io/ios/app/ntrval-timer/id6782465592)

**In-app purchases:** none


## Frequently asked questions

### Is VoltTimer free?

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

### Is Ntrval Timer free?

Ntrval Timer is free to download, with no in-app purchases.

### Do VoltTimer or Ntrval Timer have ads?

Neither VoltTimer nor Ntrval Timer shows ads.

### Which is updated more often, VoltTimer or Ntrval Timer?

VoltTimer ships an update every 3 weeks, and Ntrval Timer every 3 weeks. Most recently, VoltTimer was updated on September 20, 2026 and Ntrval Timer on October 5, 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.*