# VoltDo vs Core Three

The clearest difference is in-app purchases: Core Three at none against VoltDo's 2. Core Three also leads on iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. VoltDo sells 2 in-app purchases, starting at $0.99 per month. Core Three asks for nothing beyond the download.

## The numbers

| Metric | VoltDo | Core Three |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/voltdo-energy-to-do-list/id6757859325/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Freemium | — |
| Size | 15 MB | 1 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Johanna Hoppe](https://appshunter.io/developer/1869099620) | [PAUL SHIN GAY](https://appshunter.io/developer/1883365950) |

## What reviewers say

### VoltDo

[App page](https://appshunter.io/ios/app/voltdo-energy-to-do-list/id6757859325)

This app helps you manage your tasks by considering your personal energy levels. It filters tasks by effort and warns you against overcommitting to prevent burnout. Focus on what you can handle now and find your productive flow.

**Highlights:** Filter tasks by energy effort (Light, Medium, Heavy), Focus Mode to hide overwhelming tasks, Anti-burnout warnings for overcommitment, Smart widgets for home screen task visibility, Personalized energy management

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VoltDo Pro Monthly | $0.99 | per month |
| VoltDo Pro Yearly | $9.99 | per year |


### Core Three

[App page](https://appshunter.io/ios/app/core-three/id6760226563)

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

**In-app purchases:** none


## Frequently asked questions

### Is VoltDo free?

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

### Is Core Three free?

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

### Do VoltDo or Core Three have ads?

Neither VoltDo nor Core Three shows ads.

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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.*