# RLM vs TaskBase

The clearest difference is in-app purchases: TaskBase at none against RLM's 4. TaskBase also leads on update cadence (weekly vs monthly). RLM's advantage is iOS requirement (15.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. RLM sells 4 in-app purchases, starting at $0.49 per month. TaskBase asks for nothing beyond the download.

RLM ships an update monthly, TaskBase weekly. Both last shipped on September 30, 2026.

## The numbers

| Metric | RLM | TaskBase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (17 ratings)](https://appshunter.io/ios/app/rlm-15cx/id1636646608/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [R.L.M. Software](https://appshunter.io/developer/289639238) | [Marcial Reichert](https://appshunter.io/developer/1887074047) |

## 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 |


### TaskBase

[App page](https://appshunter.io/ios/app/taskbase-smart-tasks/id6760966320)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RLM free?

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

### Is TaskBase free?

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

### Do RLM or TaskBase have ads?

Neither RLM nor TaskBase shows ads.

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

RLM ships an update monthly, and TaskBase weekly. Most recently, RLM was updated on September 30, 2026 and TaskBase on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*