# Number Master vs OTAHub

The clearest difference is in-app purchases: Number Master at none against OTAHub's 1. Number Master also leads on update cadence (every 9 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OTAHub sells 1 one-off in-app purchase. Number Master asks for nothing beyond the download.

Number Master ships an update every 9 days, OTAHub every 2 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Number Master | OTAHub |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 72 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [CometStudio(KR)](https://appshunter.io/developer/1329844522) | [sangmin choi](https://appshunter.io/developer/1551585236) |

## What reviewers say

### Number Master

[App page](https://appshunter.io/ios/app/number-master/id1570770231)

**Features:** macOS Compatibility

**In-app purchases:** none


### OTAHub

[App page](https://appshunter.io/ios/app/otahub-figure-tracker/id6475394437)

Easily manage your collection of figures, dolls, and anime merchandise. Track reservations, inventory, sales, and create wishlists and galleries. Organize your otaku products with simple, clear tools.

**Highlights:** Track reservations and release dates, Manage owned and sold items, Sort and search items with tags, View sales history and collection statistics, Create wishlists, Store item photos in a gallery, Centralized status information

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


## Frequently asked questions

### Is Number Master free?

Number Master is free to download, with no in-app purchases.

### Is OTAHub free?

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

### Do Number Master or OTAHub have ads?

Both Number Master and OTAHub show ads.

### Which is updated more often, Number Master or OTAHub?

Number Master ships an update every 9 days, and OTAHub every 2 months. Most recently, Number Master was updated on October 30, 2026 and OTAHub on October 27, 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.*