# Underload vs Prubi

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.

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.

## The numbers

| Metric | Underload | Prubi |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/underload/id6475277279/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Paid | — |
| Size | 2 MB | 35 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anuradha Vellineni](https://appshunter.io/developer/1539259961) | [Teawoong Kim](https://appshunter.io/developer/6799824959) |

## What reviewers say

### Underload

[App page](https://appshunter.io/ios/app/underload/id6475277279)

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.

**Highlights:** Single task display, Syncs with Apple Reminders, Cross-device synchronization, Supports Siri and Shortcuts, Linear task progression

**Features:** Vision Pro support

**In-app purchases:** none


### Prubi

[App page](https://appshunter.io/ios/app/prubi-ai-note-taking-journal/id6799824957)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Annual | $29.99 | per year |
| Premium Lifetime | $109.99 | one-time |


## Frequently asked questions

### Is Underload free?

Underload costs $4.99, with no in-app purchases.

### Is Prubi free?

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

### Do Underload or Prubi have ads?

Neither Underload nor Prubi shows ads.

### Which is updated more often, Underload or Prubi?

Underload ships an update monthly, and Prubi every 3 days. Most recently, Underload was updated on October 19, 2026 and Prubi on October 10, 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.*