# VoltTimer vs RX

The clearest difference is in-app purchases: RX at none against VoltTimer's 1. 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. RX asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | VoltTimer | RX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rx-timer-wod-timer/id6783471287/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free |
| Size | 6 MB | 4 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CherneyWerk LLC](https://appshunter.io/developer/1887149773) | [Daniel Thrnaholm](https://appshunter.io/developer/6783471289) |

## 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 |


### RX

[App page](https://appshunter.io/ios/app/rx-timer-wod-timer/id6783471287)

This app provides a versatile workout timer designed for functional fitness. It supports various training formats like AMRAP, EMOM, and Tabata with customizable durations and clear visual cues. The app offers offline functionality, a high-contrast display, and the ability to stream to external screens.

**Highlights:** Multiple workout formats (AMRAP, EMOM, Tabata, RFT), Customizable work/rest intervals, Large, high-contrast display, Landscape full-screen mode, Work/rest color coding, Stream timer to TV via AirPlay, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is VoltTimer free?

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

### Is RX free?

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

### Do VoltTimer or RX have ads?

Neither VoltTimer nor RX shows ads.

### Which is updated more often, VoltTimer or RX?

VoltTimer ships an update every 3 weeks, and RX every 3 weeks. Most recently, VoltTimer was updated on October 7, 2026 and RX on October 11, 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.*