Underload vs Prubi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Underload
This productivity app helps you focus by displaying only one task at a time from your to-do list. It syncs seamlessly with Apple Reminders, allowing you to manage tasks across all your devices and use familiar voice commands and shortcuts.
- Single task display
- Syncs with Apple Reminders
- Cross-device synchronization
- Supports Siri and Shortcuts
- Linear task progression
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It's all in the title. Do you ever feel overwhelmed by the sheer number of tasks on your to-do list? Adding all your tasks only to be faced with a seemingly endless list can make it hard to get anything done. That's why I created Underload, a to-do list app for iPhone, iPad, and Mac that only shows you one task at a time. You can add all your tasks, but you'll only see the next one you need to tackle. You get a clear, linear path forward, a singular focus. Best part is, it two-way syncs with Apple Reminders, so your tasks sync across all your devices and you can keep using Siri, HomePod, Shortcuts, and whatever other integrations you're used to to manage tasks. Privacy Policy: https://www.underload.app/privacypolicy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Prubi
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Prubi — the AI notes app that gets prettier as you write. One line becomes a plan, and Prubi reminds you before you forget. WHY YOU'LL WANT TO OPEN IT • Share as one card, no link — today's line turns into a picture card. Anyone can read it, even without the app. • 16 pixel friends — as your writing days add up, a new friend drops by and walks along the bottom of the screen. Can you collect them all? • A desk that grows with you — 28 papers, tapes, props and friends to decorate every day, nothing to buy. • One line is enough — no long entries, and skipping a day is fine. Start light with 7 Days of Gratitude. EVERYDAY PROBLEMS, MADE EASY • Jot it before it slips away — write straight from Home. No folder to pick first. • Notes become plans — write one line, tap "Let Prubi sort this", and the date and time land on your calendar. • Check it, color it, remind me — checklists, 6 colors and reminders. • Your week at a glance — weekly planner, a 24-hour day view and D-day. • "Where did I write that?" — ask, and the AI finds it in your own notes and shows exactly which notes it read. BUILT TO TRUST, BUILT TO LAST • A vault only you can open — passwords, account numbers and ID photos are encrypted on your device before upload; the server keeps only ciphertext. • Write on your phone, continue on PC — same account, same notes on phone, PC and tablet. • 16 languages · no ads · no data selling · your notes are not used to train AI models. • Export notes to Word, PDF or Excel, and delete your account any time. START WITH ONE LINE TODAY Create your free account now — every line you write is saved to it, so nothing is lost even if you change phones. Free to start. When you want to go deeper, continue with an annual or lifetime plan inside the app. On a computer, pick up right where you left off at prubi.online with the same account. Made by Gonggansai
Screenshots
Verdict
The clearest difference is price: Prubi at Free against Underload's $4.99. Prubi also leads on update cadence (every 3 days vs monthly). Underload's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads and iOS requirement 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
Prubi is free to download; Underload costs $4.99 up front. Prubi sells 2 in-app purchases, starting at $29.99 per year. Underload asks for nothing beyond the download.
Underload ships an update monthly, Prubi every 3 days. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.
| Parameter | Underload | Prubi |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Anuradha Vellineni | Teawoong Kim |
In-app purchases
Underload
No in-app purchases
Prubi
- Premium Annual$29.991 Year
- Premium Lifetime$109.99









