# Missing Number Calculator vs JustPad

The clearest difference is price: Missing Number Calculator at $0.99 against JustPad's $19.99. Missing Number Calculator also leads on update cadence (every 3 days vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Missing Number Calculator costs $0.99 and JustPad $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Missing Number Calculator ships an update every 3 days, JustPad every 3 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Missing Number Calculator | JustPad |
| --- | --- | --- |
| Price | **$0.99** | $19.99 |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/justpad-brain-dump-notes/id6751774054/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | — | Free |
| Size | 6 MB | 1 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Infinity Inc. (Apps)](https://appshunter.io/developer/1680741877) | [东景 梁](https://appshunter.io/developer/1573102134) |

## What reviewers say

### Missing Number Calculator

[App page](https://appshunter.io/ios/app/missing-number-calculator/id6747973776)

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

**In-app purchases:** none


### JustPad

[App page](https://appshunter.io/ios/app/justpad-brain-dump-notes/id6751774054)

This app provides an endless page for quickly capturing thoughts, ideas, and tasks without the need for organization. Easily convert entries into reminders and share them as images. It prioritizes privacy with no network access and optional iCloud sync.

**Highlights:** Endless single-page note-taking, Convert notes to system reminders, Light Markdown highlighting, Share notes as images, Stealth mode for privacy, Local-first storage with iCloud sync

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Missing Number Calculator free?

Missing Number Calculator costs $0.99, with no in-app purchases.

### Is JustPad free?

JustPad costs $19.99, with no in-app purchases.

### Do Missing Number Calculator or JustPad have ads?

Neither Missing Number Calculator nor JustPad shows ads.

### Which is updated more often, Missing Number Calculator or JustPad?

Missing Number Calculator ships an update every 3 days, and JustPad every 3 months. Most recently, Missing Number Calculator was updated on October 13, 2026 and JustPad on October 2, 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.*