# API PRO Stock vs Hydroscand Shelf Refill

The clearest difference is iOS requirement: API PRO Stock at 8.0 against Hydroscand Shelf Refill's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

API PRO Stock ships an update every 10 months, Hydroscand Shelf Refill every 9 months. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | API PRO Stock | Hydroscand Shelf Refill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Size | 2 MB | 68 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [API Maintenance Systems A/S](https://appshunter.io/developer/589801801) | [Lexit Group Norway AS](https://appshunter.io/developer/708305047) |

## What reviewers say

### API PRO Stock

[App page](https://appshunter.io/ios/app/api-pro-stock/id1400648449)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hydroscand Shelf Refill

[App page](https://appshunter.io/ios/app/hydroscand-shelf-refill/id1569819028)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is API PRO Stock free?

API PRO Stock is free to download, with no in-app purchases.

### Is Hydroscand Shelf Refill free?

Hydroscand Shelf Refill is free to download, with no in-app purchases.

### Do API PRO Stock or Hydroscand Shelf Refill have ads?

Neither API PRO Stock nor Hydroscand Shelf Refill shows ads.

### Which is updated more often, API PRO Stock or Hydroscand Shelf Refill?

API PRO Stock ships an update every 10 months, and Hydroscand Shelf Refill every 9 months. Most recently, API PRO Stock was updated on October 12, 2026 and Hydroscand Shelf Refill on October 18, 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.*