# When2Do vs Calendar Notes Pro

The clearest difference is ads: When2Do at none against Calendar Notes Pro's shown. When2Do also leads on monetization model (free vs ad-supported). Calendar Notes Pro's advantage is update cadence (daily vs every 10 days). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for When2Do against 5.0 for Calendar Notes Pro. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

When2Do ships an update every 10 days, Calendar Notes Pro daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | When2Do | Calendar Notes Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/when2do/id1672746901/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/calendar-notes-pro/id6757369920/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Daily** |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 35 MB |
| Requires iOS | 16.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Danilo Bottini](https://appshunter.io/developer/304768858) | [Alok Haldiya](https://appshunter.io/developer/1866422343) |

## What reviewers say

### When2Do

[App page](https://appshunter.io/ios/app/when2do/id1672746901)

This app helps you plan your activities by scheduling them based on duration, deadline, and your work schedule. It tracks task progress and can export data to CSV. View your overall schedule in a GANTT style.

**Highlights:** Automated activity scheduling, Task duration and deadline input, Work schedule and holiday consideration, Task execution status tracking, CSV data export, GANTT style schedule view

**Features:** macOS Compatibility

**In-app purchases:** none


### Calendar Notes Pro

[App page](https://appshunter.io/ios/app/calendar-notes-pro/id6757369920)

This app integrates your calendar and notes into a single, minimalist interface. View notes directly on your calendar and enjoy instant auto-save for a stress-free organization experience. It prioritizes privacy by storing all data locally on your device.

**Highlights:** Notes displayed on calendar, Instant auto-save, Minimalist design, Tap to write notes, Fully offline functionality, Local data storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is When2Do free?

When2Do is free to download, with no in-app purchases.

### Is Calendar Notes Pro free?

Calendar Notes Pro is free to download, with no in-app purchases.

### Which has better reviews, When2Do or Calendar Notes Pro?

When2Do and Calendar Notes Pro are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do When2Do or Calendar Notes Pro have ads?

Calendar Notes Pro shows ads; When2Do does not.

### Which is updated more often, When2Do or Calendar Notes Pro?

When2Do ships an update every 10 days, and Calendar Notes Pro daily. Most recently, When2Do was updated on October 24, 2026 and Calendar Notes Pro on October 24, 2026.

---

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