# 12Calc vs RLM

The clearest difference is price: RLM at Free against 12Calc's $8.99. RLM also leads on update cadence (every 5 weeks vs every 5 months) and iOS requirement (15.0 vs 17.6). 12Calc's advantage is in-app purchases (none vs 4) and rating (4.9 vs 4.5). On review sentiment, 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 4.5. That said, the two scores are not equally well evidenced: 12Calc has 924 ratings behind it against 19, 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 90% of RLM's.

12Calc ships an update every 5 months, RLM every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 12Calc | RLM |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.9 (924 ratings)](https://appshunter.io/ios/app/12calc/id780780002/reviews)** | [4.5 (19 ratings)](https://appshunter.io/ios/app/rlm-12cx/id1613759385/reviews) |
| Number of ratings | **924** | 19 |
| Positive reviews | **95.9% of reviews** | 90.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#132** | — |
| Size | 6 MB | 5 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| 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:** #132 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-12cx/id1613759385)

This app is a powerful financial and business calculator designed for iOS devices, replicating the functionality of the HP-12C with expanded features. It offers comprehensive tools for finance, business calculations, statistics, scientific functions, and unit conversions.

**Highlights:** Finance and business calculations, Amortization schedules, Bond price and yield calculations, Black-Scholes options valuation, Depreciation methods, Currency and unit conversions, Statistical analysis, Programmable functions

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthtly 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 924 ratings, while RLM averages 4.5 from 19 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 every 5 weeks. Most recently, 12Calc was updated on October 24, 2026 and RLM 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.*