# Chronometer vs Retroaction

The clearest difference is in-app purchases: Retroaction at none against Chronometer's 1. Retroaction also leads on update cadence (every 2 weeks vs every 37 months) and review sentiment (21% vs 0%). Chronometer's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chronometer sells 1 one-off in-app purchase. Retroaction asks for nothing beyond the download.

Chronometer ships an update every 37 months, Retroaction every 2 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Chronometer | Retroaction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/chronometer-interval-workout/id1352962703/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | **21.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 37 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 3 MB | 46 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Musoles Tornador](https://appshunter.io/developer/1168538549) | [Retroaction](https://appshunter.io/developer/1543623559) |

## What reviewers say

### Chronometer

[App page](https://appshunter.io/ios/app/chronometer-interval-workout/id1352962703)

This interval timer is designed for various training routines, including weightlifting, HIIT, and boxing. It offers customizable timers, repetitions, and sound alerts to guide your workouts. Save and load your training plans for easy access and progress tracking.

**Highlights:** 3 programmable timers, Customizable time settings, Customizable repetitions, Save and load training plans, Audible alerts, Speaking coach, Visual cues

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock timer settings | $1.99 | one-time |


### Retroaction

[App page](https://appshunter.io/ios/app/retroaction/id1599319114)

This app helps members of sports organizations manage their attendance for activities. Users can view team details and communicate with others through integrated chat rooms.

**Highlights:** Mark attendance, View group/team details, In-app chat rooms, Communication features

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

**In-app purchases:** none


## Frequently asked questions

### Is Chronometer free?

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

### Is Retroaction free?

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

### Do Chronometer or Retroaction have ads?

Retroaction shows ads; Chronometer does not.

### Which is updated more often, Chronometer or Retroaction?

Chronometer ships an update every 37 months, and Retroaction every 2 weeks. Most recently, Chronometer was updated on September 22, 2026 and Retroaction on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*