# Duet vs UnBubble

The clearest difference is in-app purchases: UnBubble at none against Duet's 3. UnBubble also leads on ads (none vs shown). Duet's advantage is iOS requirement (15.0 vs 17.5). On price, update cadence and device support there is nothing between them.

Both are free to download. Duet sells 3 in-app purchases, starting at $2.99 per month. UnBubble asks for nothing beyond the download.

Duet ships an update weekly, UnBubble every 8 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Duet | UnBubble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/duet-shared-couples-calendar/id6503354460/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 80 MB | 17 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TSE JU LIN](https://appshunter.io/developer/1749076563) | [FUNDACAO PADRE LEONEL FRANCA](https://appshunter.io/developer/1566582123) |

## What reviewers say

### Duet

[App page](https://appshunter.io/ios/app/duet-shared-couples-calendar/id6503354460)

This app helps couples stay organized and connected by offering a shared calendar, anniversary tracking, and a collaborative wish list. It focuses on practical tools for coordination rather than gamified romance prompts.

**Highlights:** Shared calendar for couples, Anniversary and date tracking, Collaborative wish list, Event planning for two, Relationship organization tools

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duet Plus (Monthly) | $2.99 | per month |
| Duet Plus (Quarterly) | $5.99 | per 3 months |
| Duet Plus (Yearly) | $17.99 | per year |


### UnBubble

[App page](https://appshunter.io/ios/app/unbubble/id6648797382)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Duet free?

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

### Is UnBubble free?

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

### Do Duet or UnBubble have ads?

Duet shows ads; UnBubble does not.

### Which is updated more often, Duet or UnBubble?

Duet ships an update weekly, and UnBubble every 8 days. Most recently, Duet was updated on October 9, 2026 and UnBubble on October 7, 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.*