# Calendar Week Nerd vs OnlyNumbers

The clearest difference is in-app purchases: OnlyNumbers at none against Calendar Week Nerd's 3. OnlyNumbers also leads on iOS requirement (16.4 vs 18.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calendar Week Nerd sells 3 in-app purchases, starting at $1.99 per month. OnlyNumbers asks for nothing beyond the download.

Calendar Week Nerd ships an update every 2 weeks, OnlyNumbers every 9 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Calendar Week Nerd | OnlyNumbers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calendar-week-nerd/id6744461822/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 161 MB | 41 MB |
| Requires iOS | 18.4 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Balthasar Siekiera](https://appshunter.io/developer/1805185275) | [Mike Parker](https://appshunter.io/developer/1736044115) |

## What reviewers say

### Calendar Week Nerd

[App page](https://appshunter.io/ios/app/calendar-week-nerd/id6744461822)

This app offers customizable widgets for your home and lock screens, allowing you to track week progress and navigate your calendar. It supports Apple Watch complications and various custom week setups, including ISO and fiscal years.

**Highlights:** Home and lock screen widgets, Custom week start day, ISO and fiscal year week numbering, Apple Watch app and complications, Direct calendar navigation, Yearly progress arcs

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalendarWeekNerd+ Monthly | $1.99 | per month |
| CalendarWeekNerd Plus Yearly | $9.99 | per year |
| CalendarWeekNerd+ Lifetime | $29.99 | one-time |


### OnlyNumbers

[App page](https://appshunter.io/ios/app/onlynumbers/id6759034720)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Week Nerd free?

Calendar Week Nerd is free to download, with in-app purchases available.

### Is OnlyNumbers free?

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

### Do Calendar Week Nerd or OnlyNumbers have ads?

Neither Calendar Week Nerd nor OnlyNumbers shows ads.

### Which is updated more often, Calendar Week Nerd or OnlyNumbers?

Calendar Week Nerd ships an update every 2 weeks, and OnlyNumbers every 9 days. Most recently, Calendar Week Nerd was updated on November 5, 2026 and OnlyNumbers on October 31, 2026.

---

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