# RLM vs 12C

The clearest difference is update cadence: RLM at every 2 months against 12C's every 15 months. 12C's advantage is review sentiment (21% vs 0%) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. RLM sells 4 in-app purchases, starting at $0.49 per month and 12C sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

RLM ships an update every 2 months, 12C every 15 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | RLM | 12C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.1 (10 ratings)](https://appshunter.io/ios/app/12c-modern/id6444529133/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | 0.0% of reviews | **21.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 15 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [R.L.M. Software](https://appshunter.io/developer/289639238) | [Anishu, Inc.](https://appshunter.io/developer/306257913) |

## What reviewers say

### RLM

[App page](https://appshunter.io/ios/app/rlm-10bx/id1563019331)

This app simulates a powerful financial calculator, offering extensive tools for business, finance, statistics, and scientific calculations. It provides worksheets for loan amortization, bond pricing, currency exchange, and more, all within an intuitive interface designed for iOS devices.

**Highlights:** Finance worksheets (amortization, bond price, time value of money), Business calculations (bill split, break-even, currency exchange), Cash flow analysis, Statistical functions, Scientific and trigonometric functions, Unit and currency conversions, Date and time calculations, Equation solver

**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 |


### 12C

[App page](https://appshunter.io/ios/app/12c-modern/id6444529133)

This app replicates the functionality of a classic financial calculator, offering modern enhancements like interactive prompts and register views. It provides basic calculator, math, percentage, calendar, and memory functions for free, with advanced financial tools available via a one-time purchase.

**Highlights:** HP 12c functionality reimplementation, Interactive prompts and recipes, Register views for data inspection, Basic calculator functions included, Advanced financial functions via IAP

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12C Modern: full functionality | $5.99 | one-time |


## Frequently asked questions

### Is RLM free?

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

### Is 12C free?

12C is free to download, with in-app purchases available.

### Do RLM or 12C have ads?

Neither RLM nor 12C shows ads.

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

RLM ships an update every 2 months, and 12C every 15 months. Most recently, RLM was updated on October 30, 2026 and 12C on October 30, 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.*