# Dual vs DOTHING

The clearest difference is in-app purchases: Dual at none against DOTHING's 1. Dual also leads on iOS requirement (17.0 vs 26.0). DOTHING's advantage is update cadence (every 2 months vs every 28 months). On price, ads and device support there is nothing between them.

Both are free to download. DOTHING sells 1 one-off in-app purchase. Dual asks for nothing beyond the download.

Dual ships an update every 28 months, DOTHING every 2 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dual | DOTHING |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Size | 4 MB | 23 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chih-Hao Chen](https://appshunter.io/developer/618207820) | [Prem Gurusamy](https://appshunter.io/developer/1891279798) |

## What reviewers say

### Dual

[App page](https://appshunter.io/ios/app/dual-calculator/id6479655030)

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

**In-app purchases:** none


### DOTHING

[App page](https://appshunter.io/ios/app/dothing-tasks-done/id6761752907)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Dual free?

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

### Is DOTHING free?

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

### Do Dual or DOTHING have ads?

Neither Dual nor DOTHING shows ads.

### Which is updated more often, Dual or DOTHING?

Dual ships an update every 28 months, and DOTHING every 2 months. Most recently, Dual was updated on November 4, 2026 and DOTHING 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.*