# Douber vs Dual Space

The clearest difference is ads: Dual Space at none against Douber's shown. Dual Space also leads on update cadence (every 5 weeks vs every 3 months). Douber's advantage is review sentiment (33% vs 20%) and iOS requirement (12.0 vs 15.6). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Douber sells 1 in-app purchase, starting at $19.99 per year and Dual Space sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Douber against 4.5 for Dual Space. Both are backed by a comparable volume of ratings — 19 and 47 respectively. Written reviews are what separate them: 33% of Douber's written reviews are positive against 20% of Dual Space's.

Douber ships an update every 3 months, Dual Space every 5 weeks. The most recent releases landed on September 9, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Douber | Dual Space |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/douber-duals-and-parallel-apps/id1629804902/reviews)** | [4.5 (47 ratings)](https://appshunter.io/ios/app/dual-space-parallel-space/id6450270672/reviews) |
| Number of ratings | 19 | **47** |
| Positive reviews | **33.3% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 19 MB | 22 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Ha Dinh Duc](https://appshunter.io/developer/1629804904) | [Thao Tran](https://appshunter.io/developer/1684058505) |

## What reviewers say

### Douber

[App page](https://appshunter.io/ios/app/douber-duals-and-parallel-apps/id1629804902)

This app allows users to run two applications simultaneously, such as an incognito browser alongside notes, a calculator, or a calendar. It's designed for multitasking individuals needing quick access to multiple tools.

**Highlights:** Incognito browser, Flash notes, Calculator, Calendar, PDF viewer, Dual web browser view, Security password generator

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $19.99 | per year |


### Dual Space

[App page](https://appshunter.io/ios/app/dual-space-parallel-space/id6450270672)

This utility app allows users to run multiple accounts from the same social media or messaging application simultaneously on a single device. It helps manage personal and professional lives by keeping different accounts online and independent of each other.

**Highlights:** Multiple accounts for social media, Balance personal and professional life, Fast account switching, Independent account operation, Split browser, Direct chat for WhatsApp, Privacy browser

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $4.99 | per 7 days |
| Yearly subscription | $19.99 | per year |
| Lifetime subscription | $29.99 | one-time |


## Frequently asked questions

### Is Douber free?

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

### Is Dual Space free?

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

### Which has better reviews, Douber or Dual Space?

Douber is rated higher. Douber averages 4.6 out of 5 from 19 ratings, while Dual Space averages 4.5 from 47 ratings.

### Do Douber or Dual Space have ads?

Douber shows ads; Dual Space does not.

### Which is updated more often, Douber or Dual Space?

Douber ships an update every 3 months, and Dual Space every 5 weeks. Most recently, Douber was updated on September 9, 2026 and Dual Space on August 23, 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.*