# Dooo vs PDF Scanner

The clearest difference is update cadence: Dooo at every 3 days against PDF Scanner's every 2 months. Dooo also leads on device support (3 vs 1). PDF Scanner's advantage is iOS requirement (16.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Dooo sells 2 in-app purchases, starting at $0.99 per year and PDF Scanner sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Dooo ships an update every 3 days, PDF Scanner every 2 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Dooo | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/dooo-habit-tracker/id6749438072/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 17 MB | 18 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lovely Duck, LLC](https://appshunter.io/developer/1505160193) | [DASHING ENTERPRISES LIMITED](https://appshunter.io/developer/6792976544) |

## What reviewers say

### Dooo

[App page](https://appshunter.io/ios/app/dooo-habit-tracker/id6749438072)

Build positive habits effortlessly with this intuitive tracker. Customize goals, view progress with detailed statistics, and stay organized with a to-do list. Syncs across devices and offers a focus mode for enhanced productivity.

**Highlights:** Customizable habit names, icons, and colors, Flexible goal setting with multiple check-in frequencies, Detailed statistics and check-in calendar, To-Do List functionality, Focus mode, iCloud backup and cross-device sync, Data export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $0.99 | per year |
| One-Time Purchase | $2.99 | one-time |


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-scan-pdf-and-docs/id6793353965)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Nova | $9.99 | per 7 days |
| Yearly Nova | $39.99 | per year |


## Frequently asked questions

### Is Dooo free?

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

### Is PDF Scanner free?

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

### Do Dooo or PDF Scanner have ads?

Neither Dooo nor PDF Scanner shows ads.

### Which is updated more often, Dooo or PDF Scanner?

Dooo ships an update every 3 days, and PDF Scanner every 2 months. Most recently, Dooo was updated on October 16, 2026 and PDF Scanner on October 17, 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.*