# Codename Jo vs Nautilo

The clearest difference is update cadence: Codename Jo at every 5 days against Nautilo's every 2 weeks. Nautilo's advantage is iOS requirement (16.4 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

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

Codename Jo ships an update every 5 days, Nautilo every 2 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Codename Jo | Nautilo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/codename-jo/id6793888936/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 110 MB | 60 MB |
| Requires iOS | 26.4 | **16.4** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Petaforge Inc.](https://appshunter.io/developer/6786018763) | [Kentauros AI Inc.](https://appshunter.io/developer/6800470421) |

## 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


### Nautilo

[App page](https://appshunter.io/ios/app/nautilo/id6800470419)

**In-app purchases:** none


## Frequently asked questions

### Is Codename Jo free?

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

### Is Nautilo free?

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

### Do Codename Jo or Nautilo have ads?

Neither Codename Jo nor Nautilo shows ads.

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

Codename Jo ships an update every 5 days, and Nautilo every 2 weeks. Most recently, Codename Jo was updated on November 6, 2026 and Nautilo 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.*