# Calccis vs RLM

The clearest difference is in-app purchases: Calccis at none against RLM's 1. RLM's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RLM sells 1 one-off in-app purchase. Calccis asks for nothing beyond the download.

Calccis ships an update every 3 weeks, RLM every 4 weeks. The most recent releases landed on September 12, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Calccis | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rlm-10cx/id6466089794/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | — | Free |
| Size | 1 MB | 6 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jukka Aittola](https://appshunter.io/developer/1676073314) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### Calccis

[App page](https://appshunter.io/ios/app/calccis/id6446233205)

**In-app purchases:** none


### RLM

[App page](https://appshunter.io/ios/app/rlm-10cx/id6466089794)

This scientific calculator offers a comprehensive suite of tools for finance, business, statistics, and complex scientific calculations. It emulates a classic calculator while leveraging modern iOS device capabilities for ease of use and advanced functions.

**Highlights:** Finance and Business calculations, Date and Time interval calculations, Advanced Statistics and Curve Fitting, Complex Numbers and 3D Vectors, Unit and Currency Conversions, Equation Solver, Programmable functions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $9.99 | one-time |


## Frequently asked questions

### Is Calccis free?

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

### Is RLM free?

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

### Do Calccis or RLM have ads?

Neither Calccis nor RLM shows ads.

### Which is updated more often, Calccis or RLM?

Calccis ships an update every 3 weeks, and RLM every 4 weeks. Most recently, Calccis was updated on September 12, 2026 and RLM on September 10, 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.*