# BUSY vs Chronos One

The clearest difference is rating: Chronos One at 5.0 against BUSY's 4.0. Chronos One also leads on update cadence (daily vs fortnightly) and iOS requirement (12.0 vs 18.0). BUSY's advantage is ratings volume (12 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chronos One holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: BUSY has 12 ratings behind it against 1, so its average is the more settled of the two.

BUSY ships an update fortnightly, Chronos One daily. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | BUSY | Chronos One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (12 ratings)](https://appshunter.io/ios/app/busy-advanced-focus-timer/id6738797176/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chronos-one/id6741525761/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | Free |
| Size | 173 MB | 55 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, Mac, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flipper - FZCO](https://appshunter.io/developer/6777132645) | [Hermella Abay](https://appshunter.io/developer/1794549525) |

## What reviewers say

### BUSY

[App page](https://appshunter.io/ios/app/busy-advanced-focus-timer/id6738797176)

Enhance your productivity by blocking distracting apps and muting notifications. This tool offers customizable focus sessions, including Pomodoro-style workflows, and provides insights into your distraction attempts to help you improve focus.

**Highlights:** Customizable focus sessions (timer, Pomodoro, no time limit), Distraction blocking (apps, notifications), Accountability features (no skipping sessions), Distraction attempt tracking, Apple Watch integration, Customizable timer themes

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Chronos One

[App page](https://appshunter.io/ios/app/chronos-one/id6741525761)

Effortlessly track your work hours, manage breaks, and generate professional invoices. This app helps freelancers and professionals organize their time and get paid accurately. Customize employer and payment details for seamless billing.

**Highlights:** Accurate time tracking with punch in/out, Smart break management, Seamless session editing, Professional PDF invoicing, Customizable employer profiles, Easy date range selection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BUSY free?

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

### Is Chronos One free?

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

### Which has better reviews, BUSY or Chronos One?

Chronos One is rated higher. BUSY averages 4.0 out of 5 from 12 ratings, while Chronos One averages 5.0 from 1 ratings.

### Do BUSY or Chronos One have ads?

Neither BUSY nor Chronos One shows ads.

### Which is updated more often, BUSY or Chronos One?

BUSY ships an update fortnightly, and Chronos One daily. Most recently, BUSY was updated on September 17, 2026 and Chronos One on September 18, 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.*