# BYB Chrono vs RWECS

The clearest difference is in-app purchases: BYB Chrono at none against RWECS's 1. BYB Chrono also leads on iOS requirement (15.1 vs 17.6). RWECS's advantage is update cadence (every 6 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. RWECS sells 1 in-app purchase, starting at $1.99 per month. BYB Chrono asks for nothing beyond the download.

BYB Chrono ships an update monthly, RWECS every 6 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | BYB Chrono | RWECS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 49 MB | 25 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [BYB Tech](https://appshunter.io/developer/1524533536) | [Dmitry Babenko](https://appshunter.io/developer/1823448935) |

## What reviewers say

### BYB Chrono

[App page](https://appshunter.io/ios/app/byb-chrono/id1610945807)

**Features:** macOS Compatibility

**In-app purchases:** none


### RWECS

[App page](https://appshunter.io/ios/app/rwecs/id6747927317)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Level Monthly Subscription | $1.99 | per month |


## Frequently asked questions

### Is BYB Chrono free?

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

### Is RWECS free?

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

### Do BYB Chrono or RWECS have ads?

Neither BYB Chrono nor RWECS shows ads.

### Which is updated more often, BYB Chrono or RWECS?

BYB Chrono ships an update monthly, and RWECS every 6 days. Most recently, BYB Chrono was updated on October 25, 2026 and RWECS on October 25, 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.*