# Screen Ruler vs TwoDo

The clearest difference is review sentiment: TwoDo at 100% against Screen Ruler's 55%. TwoDo also leads on in-app purchases (none vs 2) and ads (none vs shown). Screen Ruler's advantage is price (Free vs $0.99). On device support and iOS requirement there is nothing between them.

Screen Ruler is free to download; TwoDo costs $0.99 up front. Screen Ruler sells 2 one-off in-app purchases. TwoDo asks for nothing beyond the download.

Screen Ruler ships an update every 3 months, TwoDo every 2 days. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Screen Ruler | TwoDo |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.7 (24 ratings)](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 54.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 19 MB | 26 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [向阳 杨](https://appshunter.io/developer/1174757734) | [Ryo Makishima](https://appshunter.io/developer/1588567533) |

## What reviewers say

### Screen Ruler

[App page](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735)

Turn your iPhone or iPad into a precise measuring tool. Easily measure lengths in centimeters or inches with features like magnifier mode and haptic feedback. Ideal for daily tasks, office use, DIY projects, and on-the-go measurements.

**Highlights:** Dual units (cm/inches), Precision calibration, Magnifier mode, Haptic feedback, Clean interface, Save and label measurements

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads-free experience | $1.99 | one-time |
| Support for a cup of coffee | $2.99 | one-time |


### TwoDo

[App page](https://appshunter.io/ios/app/twodo/id1606507639)

This utility app helps couples and partners manage shared tasks like shopping lists, places to visit, and to-dos. It features real-time synchronization between devices, ensuring both partners are always updated on additions and deletions. Say goodbye to forgotten items and missed opportunities with this simple, intuitive tool.

**Highlights:** Shared task management for couples, Real-time synchronization, Simple and intuitive UI, Manages shopping, places, and to-dos, Eliminates forgotten tasks

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Screen Ruler free?

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

### Is TwoDo free?

TwoDo costs $0.99, with no in-app purchases.

### Do Screen Ruler or TwoDo have ads?

Screen Ruler shows ads; TwoDo does not.

### Which is updated more often, Screen Ruler or TwoDo?

Screen Ruler ships an update every 3 months, and TwoDo every 2 days. Most recently, Screen Ruler was updated on September 20, 2026 and TwoDo on September 21, 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.*