# Deep Sky Diary vs calomee

The clearest difference is in-app purchases: Deep Sky Diary at none against calomee's 2. Deep Sky Diary also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. calomee sells 2 in-app purchases, starting at $2.99 per month. Deep Sky Diary asks for nothing beyond the download.

Deep Sky Diary ships an update every 3 days, calomee weekly. The most recent releases landed on October 11, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Deep Sky Diary | calomee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deep-sky-diary/id1510396752/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free | — |
| Size | 8 MB | 57 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shunzhe Ma](https://appshunter.io/developer/1052286218) | [Yohei Kono](https://appshunter.io/developer/320171706) |

## What reviewers say

### Deep Sky Diary

[App page](https://appshunter.io/ios/app/deep-sky-diary/id1510396752)

Record your thoughts and memories for your future self or send messages into the void. This app allows you to create regular diary entries, schedule future readings, or send messages that are permanently deleted.

**Highlights:** Regular diary entries, Scheduled future readings, Ephemeral black hole messages, Optional black hole receipt

**Features:** macOS Compatibility

**In-app purchases:** none


### calomee

[App page](https://appshunter.io/ios/app/calomee/id6753098466)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $2.99 | per month |
| premium plan | $29.99 | per year |


## Frequently asked questions

### Is Deep Sky Diary free?

Deep Sky Diary is free to download, with no in-app purchases.

### Is calomee free?

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

### Do Deep Sky Diary or calomee have ads?

calomee shows ads; Deep Sky Diary does not.

### Which is updated more often, Deep Sky Diary or calomee?

Deep Sky Diary ships an update every 3 days, and calomee weekly. Most recently, Deep Sky Diary was updated on October 11, 2026 and calomee on September 29, 2026.

---

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