# Atomic Calendar vs Better Keep

The clearest difference is in-app purchases: Atomic Calendar at none against Better Keep's 2. Better Keep's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Better Keep sells 2 in-app purchases, starting at $2.99 per month. Atomic Calendar asks for nothing beyond the download.

Atomic Calendar ships an update every 3 weeks, Better Keep every 4 days. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Atomic Calendar | Better Keep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 64 MB | 53 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Brandon Guigo](https://appshunter.io/developer/1772643694) | [Foxbiz Software Private Limited](https://appshunter.io/developer/1879446516) |

## What reviewers say

### Atomic Calendar

[App page](https://appshunter.io/ios/app/atomic-calendar/id6757757656)

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

**In-app purchases:** none


### Better Keep

[App page](https://appshunter.io/ios/app/better-keep-private-notes/id6759548198)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Better Keep Pro Monthly | $2.99 | per month |
| Better Keep Pro Yearly | $20.99 | per year |


## Frequently asked questions

### Is Atomic Calendar free?

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

### Is Better Keep free?

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

### Do Atomic Calendar or Better Keep have ads?

Neither Atomic Calendar nor Better Keep shows ads.

### Which is updated more often, Atomic Calendar or Better Keep?

Atomic Calendar ships an update every 3 weeks, and Better Keep every 4 days. Most recently, Atomic Calendar was updated on October 15, 2026 and Better Keep on October 6, 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.*