# Codename Jo vs DIARYit

The clearest difference is rating: DIARYit at 5.0 against Codename Jo's 1.0. DIARYit also leads on iOS requirement (15.0 vs 26.4). Codename Jo's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. DIARYit sells 2 in-app purchases, starting at $3.99 per month. Codename Jo asks for nothing beyond the download.

DIARYit holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Codename Jo ships an update every 5 days, DIARYit every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Codename Jo | DIARYit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/codename-jo/id6793888936/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diaryit-diary-journal/id6808505331/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 110 MB | 5 MB |
| Requires iOS | 26.4 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Petaforge Inc.](https://appshunter.io/developer/6786018763) | [Seunghoon Baek](https://appshunter.io/developer/6807457896) |

## What reviewers say

### Codename Jo

[App page](https://appshunter.io/ios/app/codename-jo/id6793888936)

This voice assistant helps manage your inbox and calendar by summarizing emails, drafting replies, and scheduling events. It integrates with various work tools and can be controlled from your Apple Watch.

**Highlights:** Summarize emails, Draft and send replies, Organize messages, Manage calendar events, Integrate with work tools, Apple Watch companion app

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

**In-app purchases:** none


### DIARYit

[App page](https://appshunter.io/ios/app/diaryit-diary-journal/id6808505331)

A private, offline daily journal app that allows you to write one entry per day and revisit past entries through a calendar. Your entries are kept on your device and backed up via iCloud.

**Highlights:** Daily journal entries, Calendar navigation, Color-coded date marking, Continuous record of entries, Private and offline design, iCloud backup integration

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $34.99 | per year |


## Frequently asked questions

### Is Codename Jo free?

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

### Is DIARYit free?

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

### Which has better reviews, Codename Jo or DIARYit?

DIARYit is rated higher. Codename Jo averages 1.0 out of 5 from 1 ratings, while DIARYit averages 5.0 from 1 ratings.

### Do Codename Jo or DIARYit have ads?

Neither Codename Jo nor DIARYit shows ads.

### Which is updated more often, Codename Jo or DIARYit?

Codename Jo ships an update every 5 days, and DIARYit every 3 weeks. Most recently, Codename Jo was updated on November 6, 2026 and DIARYit on October 31, 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.*