# 12Calc vs RLM

The clearest difference is review sentiment: 12Calc at 96% against RLM's 33%. 12Calc also leads on rating (4.9 vs 4.3) and in-app purchases (none vs 4). RLM's advantage is price (Free vs $8.99) and update cadence (monthly vs every 5 months). On ads and device support there is nothing between them.

RLM is free to download; 12Calc costs $8.99 up front. RLM sells 4 in-app purchases, starting at $0.49 per month. 12Calc asks for nothing beyond the download.

12Calc holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: 12Calc has 926 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 96% of 12Calc's written reviews are positive against 33% of RLM's.

12Calc ships an update every 5 months, RLM monthly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 12Calc | RLM |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.9 (926 ratings)](https://appshunter.io/ios/app/12calc/id780780002/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/rlm-12px/id1613770734/reviews) |
| Number of ratings | **926** | 4 |
| Positive reviews | **95.9% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#155** | — |
| Size | 6 MB | 8 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Ernest Brock](https://appshunter.io/developer/289555912) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### 12Calc

[App page](https://appshunter.io/ios/app/12calc/id780780002)

**Currently charting:** #155 Top Paid · Finance (US App Store)

This app provides a full-featured financial calculator experience, replicating the functionality of a popular physical model. It offers an audit tape for tracking calculations, a unit converter with currency exchange rates, and various worksheets with interactive graphs for financial analysis. Optimized for modern devices with high-resolution graphics and support for multiple orientations.

**Highlights:** HP12C emulation, Audit tape for calculation history, Unit and currency converter, Interactive financial worksheets, Portrait and landscape views, Contextual help and tutorials, HD graphics with color themes

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

**In-app purchases:** none


### RLM

[App page](https://appshunter.io/ios/app/rlm-12px/id1613770734)

This finance and business calculator emulates the HP-12C Platinum, offering a comprehensive suite of tools for financial analysis, business calculations, statistics, and scientific functions. It allows for loan amortization, bond pricing, option valuation, currency exchange, and program creation, all within an intuitive iOS interface.

**Highlights:** Finance and business calculations, Loan amortization and bond pricing, Black-Scholes options valuation, Currency exchange with online rates, Statistical analysis, Scientific and unit conversions, Program creation and equation solving

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.49 | per month |
| Semi-Annual Subscription | $2.99 | per 6 months |
| Annual Subscription | $5.99 | per year |
| Lifetime Purchase | $9.99 | one-time |


## Frequently asked questions

### Is 12Calc free?

12Calc costs $8.99, with no in-app purchases.

### Is RLM free?

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

### Which has better reviews, 12Calc or RLM?

12Calc is rated higher. 12Calc averages 4.9 out of 5 from 926 ratings, while RLM averages 4.3 from 4 ratings.

### Do 12Calc or RLM have ads?

Neither 12Calc nor RLM shows ads.

### Which is updated more often, 12Calc or RLM?

12Calc ships an update every 5 months, and RLM monthly. Most recently, 12Calc was updated on October 29, 2026 and RLM 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.*