# ReInvent Notes for AWS session vs World Clock

The clearest difference is in-app purchases: ReInvent Notes for AWS session at none against World Clock's 1. ReInvent Notes for AWS session also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price, update cadence and ads there is nothing between them.

Both are free to download. World Clock sells 1 one-off in-app purchase. ReInvent Notes for AWS session asks for nothing beyond the download.

ReInvent Notes for AWS session ships an update every 3 weeks, World Clock fortnightly. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | ReInvent Notes for AWS session | World Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 63 MB | 2 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anuj Parikh](https://appshunter.io/developer/1399847307) | [Mehmet Erdem Devge](https://appshunter.io/developer/1464750482) |

## What reviewers say

### ReInvent Notes for AWS session

[App page](https://appshunter.io/ios/app/reinvent-notes-for-aws-session/id6670609254)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Clock

[App page](https://appshunter.io/ios/app/world-clock-time-zone-tracker/id6738009591)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features- Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is ReInvent Notes for AWS session free?

ReInvent Notes for AWS session is free to download, with no in-app purchases.

### Is World Clock free?

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

### Do ReInvent Notes for AWS session or World Clock have ads?

Neither ReInvent Notes for AWS session nor World Clock shows ads.

### Which is updated more often, ReInvent Notes for AWS session or World Clock?

ReInvent Notes for AWS session ships an update every 3 weeks, and World Clock fortnightly. Most recently, ReInvent Notes for AWS session was updated on October 3, 2026 and World Clock on September 27, 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.*