VoltDo vs Core Three
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VoltDo
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.
- 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
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VoltDo isn't just a to-do list. It's your personal energy manager. Stop drowning in endless lists that only create stress. VoltDo helps you plan your tasks based on your current battery level. WHY VOLTDO? Listen to your body. Work smart, not hard. Traditional planners ignore how you feel – VoltDo puts your well-being first. Perfect for avoiding burnout and managing ADHD. KEY FEATURES: Energy Check Filter tasks by effort: "Light", "Medium", or "Heavy". Low on energy today? The app adapts and shows you quick wins. Focus Mode Overwhelmed? Only see what you can actually handle right now. Hide the clutter. Anti-Burnout The app actively warns you when you're overcommitting for the day. Smart Widgets See your energy status and next tasks directly on your Home Screen. Download VoltDo now and find your flow. === Terms of Use: https://voltdo-terms.netlify.app
Core Three
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STAY FOCUSED. GET MORE DONE. Too many tasks? Overwhelmed by endless to-do lists? Core Three keeps you focused on what truly matters by limiting you to just 3 tasks per day. WHY CORE THREE? Research shows that focusing on fewer tasks leads to better completion rates and less stress. Core Three enforces this proven productivity principle with a simple rule: only 3 active tasks at a time. KEY FEATURES - 3-Task Daily Limit – Focus on your most important tasks without distraction - Smart Backlog – Store future tasks and let them automatically move to Today when you're ready - Due Dates & Notes – Add context and deadlines to stay organized - Track Progress – See your completed tasks and celebrate your wins - Powerful Search – Find any task instantly across all lists - Clean Design – Beautiful, intuitive interface that stays out of your way HOW IT WORKS 1) Add your tasks to the Backlog with due dates 2) Move your top 3 priorities to Today 3) Complete them before adding more 4) Review your accomplishments in Done Stop juggling endless tasks. Start finishing what matters.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | VoltDo | Core Three |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Johanna Hoppe | PAUL SHIN GAY |
In-app purchases
VoltDo
- VoltDo Pro Monthly$0.991 Month
- VoltDo Pro Yearly$9.991 Year
Core Three
No in-app purchases









