# Scale For Grams vs RPN Deck

The clearest difference is iOS requirement: Scale For Grams at 15.0 against RPN Deck's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Scale For Grams sells 2 in-app purchases, starting at $3.99 per 7 days and RPN Deck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scale For Grams ships an update every 2 weeks, RPN Deck every 11 days. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Scale For Grams | RPN Deck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Size | 44 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [笑海 吕](https://appshunter.io/developer/1883077978) | [Edgard Leo Berendsen Mercado](https://appshunter.io/developer/1893604343) |

## What reviewers say

### Scale For Grams

[App page](https://appshunter.io/ios/app/scale-for-grams-smart-scale/id6760286516)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scale For Grams Premium | $3.99 | per 7 days |
| Scale For Grams Premium | $29.99 | per year |


### RPN Deck

[App page](https://appshunter.io/ios/app/rpn-deck/id6796490842)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Deck | $2.99 | one-time |


## Frequently asked questions

### Is Scale For Grams free?

Scale For Grams is free to download, with in-app purchases available.

### Is RPN Deck free?

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

### Do Scale For Grams or RPN Deck have ads?

Neither Scale For Grams nor RPN Deck shows ads.

### Which is updated more often, Scale For Grams or RPN Deck?

Scale For Grams ships an update every 2 weeks, and RPN Deck every 11 days. Most recently, Scale For Grams was updated on October 8, 2026 and RPN Deck on October 15, 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.*