# CalcKey vs 2Do

The clearest difference is review sentiment: 2Do at 100% against CalcKey's 0%. 2Do also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. CalcKey sells 2 in-app purchases, starting at $3.99 per month. 2Do asks for nothing beyond the download.

2Do holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 0% of CalcKey's written reviews are positive against 100% of 2Do's.

CalcKey ships an update every 3 weeks, 2Do fortnightly. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CalcKey | 2Do |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/calckey-calculator-keyboard/id6748647909/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/2do-smart-task-management/id6762377780/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 15 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Right Tracks IT Limited](https://appshunter.io/developer/1803615116) | [Sochenda Hassig](https://appshunter.io/developer/1832786704) |

## What reviewers say

### CalcKey

[App page](https://appshunter.io/ios/app/calckey-calculator-keyboard/id6748647909)

Perform calculations directly within any app using a smart keyboard extension. Get instant results for basic and scientific equations, with a history of your calculations. Enjoy a seamless typing experience and smart formatting.

**Highlights:** Keyboard calculator extension, Real-time results, Basic & scientific calculators, Calculation history, Smart formatting, Standalone app option

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcKey Pro Monthly | $3.99 | per month |
| One time purchase | $19.99 | one-time |


### 2Do

[App page](https://appshunter.io/ios/app/2do-smart-task-management/id6762377780)

Organize tasks, manage projects, and collaborate with teams using a modern productivity app. Features include fast task capture, AI integration, multiple views, and real-time sync across devices.

**Highlights:** Fast task capture with natural language input, AI Assistant Integration (ChatGPT, Claude), Multiple productivity views (List, Board, Calendar), Projects and team collaboration, Smart task management with priorities and reminders, Real-time sync across devices

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

**In-app purchases:** none


## Frequently asked questions

### Is CalcKey free?

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

### Is 2Do free?

2Do is free to download, with no in-app purchases.

### Which has better reviews, CalcKey or 2Do?

2Do is rated higher. CalcKey averages 3.8 out of 5 from 8 ratings, while 2Do averages 5.0 from 7 ratings.

### Do CalcKey or 2Do have ads?

Neither CalcKey nor 2Do shows ads.

### Which is updated more often, CalcKey or 2Do?

CalcKey ships an update every 3 weeks, and 2Do fortnightly. Most recently, CalcKey was updated on October 13, 2026 and 2Do on October 5, 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.*