# Grain Calculator vs Watch faces

The clearest difference is ads: Watch faces at none against Grain Calculator's shown. Watch faces also leads on update cadence (every 9 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Grain Calculator sells 2 in-app purchases, starting at $2.99 per month and Watch faces sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Grain Calculator ships an update monthly, Watch faces every 9 days. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Grain Calculator | Watch faces |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watch-faces-amazfaces-lite/id6794642422/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 40 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Andrii Karavan](https://appshunter.io/developer/1751942401) | [Stanislav Topanov](https://appshunter.io/developer/999046660) |

## What reviewers say

### Grain Calculator

[App page](https://appshunter.io/ios/app/grain-calculator/id6504358520)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly | $2.99 | per month |
| Premium annual | $14.99 | per year |


### Watch faces

[App page](https://appshunter.io/ios/app/watch-faces-amazfaces-lite/id6794642422)

Discover and install free watch faces for your Amazfit and Zepp OS smartwatch. Browse a wide variety of styles, preview designs, and easily install them with a QR code. Personalize your watch to match your mood and activities.

**Highlights:** Free watch face gallery, No account required, Easy QR code installation, Designed for Amazfit & Zepp OS, Preview before installing, Lightweight experience

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Ad-Free | $1.99 | per 7 days |
| Month Plus | $2.99 | per month |
| Year Plus | $24.99 | per year |


## Frequently asked questions

### Is Grain Calculator free?

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

### Is Watch faces free?

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

### Do Grain Calculator or Watch faces have ads?

Grain Calculator shows ads; Watch faces does not.

### Which is updated more often, Grain Calculator or Watch faces?

Grain Calculator ships an update monthly, and Watch faces every 9 days. Most recently, Grain Calculator was updated on October 17, 2026 and Watch faces on October 25, 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.*