# Calculator Plus vs RPN Deck

The clearest difference is in-app purchases: Calculator Plus at none against RPN Deck's 1. Calculator Plus also leads on update cadence (every 3 days vs every 11 days) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. RPN Deck sells 1 one-off in-app purchase. Calculator Plus asks for nothing beyond the download.

Calculator Plus ships an update every 3 days, RPN Deck every 11 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Calculator Plus | RPN Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calculator-plus-math-solver/id1619759518/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 11 days |
| Monetization | Ad-supported | — |
| Size | 32 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BEFUN AI TECH. PTE. LTD.](https://appshunter.io/developer/1746851897) | [Edgard Leo Berendsen Mercado](https://appshunter.io/developer/1893604343) |

## What reviewers say

### Calculator Plus

[App page](https://appshunter.io/ios/app/calculator-plus-math-solver/id1619759518)

Solve complex math problems by simply taking a photo. Get detailed step-by-step solutions for a wide range of mathematical operations, from basic arithmetic to calculus. Supports multiple languages and offers an ad-free experience.

**Highlights:** Solve math problems by taking photos, Detailed solving steps provided, Supports 12 significant digits, Wide range of mathematical operations, Calculus, derivatives, and integrals, Convert repeating decimals to fractions, Supports multiple languages

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Calculator Plus free?

Calculator Plus is free to download, with no in-app purchases.

### Is RPN Deck free?

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

### Do Calculator Plus or RPN Deck have ads?

Neither Calculator Plus nor RPN Deck shows ads.

### Which is updated more often, Calculator Plus or RPN Deck?

Calculator Plus ships an update every 3 days, and RPN Deck every 11 days. Most recently, Calculator Plus was updated on November 3, 2026 and RPN Deck on November 6, 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.*