# RLM vs Block It Out

The clearest difference is rating: Block It Out at 5.0 against RLM's 4.1. Block It Out also leads on review sentiment (100% vs 80%) and update cadence (every 10 days vs monthly). RLM's advantage is ratings volume (17 vs 2). 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 Block It Out sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Block It Out holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: RLM has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of RLM's written reviews are positive against 100% of Block It Out's.

RLM ships an update monthly, Block It Out every 10 days. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RLM | Block It Out |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (17 ratings)](https://appshunter.io/ios/app/rlm-15cx/id1636646608/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/block-it-out/id6748867285/reviews)** |
| Number of ratings | **17** | 2 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 6 MB | 11 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [R.L.M. Software](https://appshunter.io/developer/289639238) | [Isaiah Weiner](https://appshunter.io/developer/1555820861) |

## What reviewers say

### RLM

[App page](https://appshunter.io/ios/app/rlm-15cx/id1636646608)

This advanced scientific calculator emulates the functionality of the HP-15C, offering comprehensive tools for finance, business, statistics, and scientific calculations. It supports programming, equation solving, and unit conversions, optimized for iOS devices.

**Highlights:** Programmable advanced scientific calculator, Finance and business calculation menus, Statistics and probability functions, Complex numbers and matrix operations, Unit and currency conversions, Equation solver and programming capabilities

**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 |
| One-Time Purchase | $9.99 | one-time |


### Block It Out

[App page](https://appshunter.io/ios/app/block-it-out/id6748867285)

This app automates calendar synchronization across multiple accounts, ensuring you're never double-booked. It protects your privacy by blocking busy times without revealing personal event details, all while operating seamlessly in the background.

**Highlights:** Automated event blocking, Privacy protection for events, Seamless background synchronization, Customizable shadow event titles, Flexible filtering options, Support for recurring events

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Block It Out - Essential | $4.99 | per month |
| Block It Out - Advanced | $19.99 | per month |


## Frequently asked questions

### Is RLM free?

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

### Is Block It Out free?

Block It Out is free to download, with in-app purchases available.

### Which has better reviews, RLM or Block It Out?

Block It Out is rated higher. RLM averages 4.1 out of 5 from 17 ratings, while Block It Out averages 5.0 from 2 ratings.

### Do RLM or Block It Out have ads?

Neither RLM nor Block It Out shows ads.

### Which is updated more often, RLM or Block It Out?

RLM ships an update monthly, and Block It Out every 10 days. Most recently, RLM was updated on September 10, 2026 and Block It Out on September 19, 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.*