# Pentatronics 1000 vs RLM

The clearest difference is in-app purchases: Pentatronics 1000 at none against RLM's 1. Pentatronics 1000 also leads on ratings volume (4 vs 1) and iOS requirement (13.3 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. RLM sells 1 one-off in-app purchase. Pentatronics 1000 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Pentatronics 1000 against 5.0 for RLM. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Pentatronics 1000 ships an update fortnightly, RLM every 4 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Pentatronics 1000 | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/pentatronics-1000/id1506502614/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/rlm-10cx/id6466089794/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 1 MB | 6 MB |
| Requires iOS | **13.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Novaes](https://appshunter.io/developer/597527233) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### Pentatronics 1000

[App page](https://appshunter.io/ios/app/pentatronics-1000/id1506502614)

Experience a faithful re-creation of a legendary gaming calculator from a bygone era. This app brings back the iconic "READY" message and the novelty of having a game on a calculator, blending math with fun, style, and humor.

**Highlights:** Faithful re-creation of a legendary gaming calculator, Iconic "READY" message, Calculator with built-in games, Emphasis on fun, style, and humor, Brings a rare collectible to mobile

**Features:** macOS Compatibility

**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 Pentatronics 1000 free?

Pentatronics 1000 is free to download, with no in-app purchases.

### Is RLM free?

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

### Which has better reviews, Pentatronics 1000 or RLM?

Pentatronics 1000 and RLM are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Pentatronics 1000 or RLM have ads?

Neither Pentatronics 1000 nor RLM shows ads.

### Which is updated more often, Pentatronics 1000 or RLM?

Pentatronics 1000 ships an update fortnightly, and RLM every 4 weeks. Most recently, Pentatronics 1000 was updated on October 3, 2026 and RLM on September 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.*