# RLM vs SandyCal

The clearest difference is in-app purchases: SandyCal at none against RLM's 4. SandyCal also leads on update cadence (every 2 days vs monthly). RLM's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.2). On price and ads there is nothing between them.

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

RLM ships an update monthly, SandyCal every 2 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | RLM | SandyCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (10 ratings)](https://appshunter.io/ios/app/rlm-17bx/id1593889938/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [R.L.M. Software](https://appshunter.io/developer/289639238) | [Hiroyuki Akaji](https://appshunter.io/developer/1886302301) |

## What reviewers say

### RLM

[App page](https://appshunter.io/ios/app/rlm-17bx/id1593889938)

This app offers a comprehensive suite of calculators for finance, business, science, and general use. It includes specialized worksheets for loans, investments, statistics, and complex mathematical functions, designed to leverage iOS device capabilities.

**Highlights:** Finance worksheets (amortization, bond pricing, options), Business calculations (bill split, break-even, currency), Statistical analysis (probability, regressions), Scientific functions (complex numbers, vectors), Unit and currency conversions, Equation solver, Date and time calculations

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Virtual Battery | $0.49 | per month |
| Semi-Annual Subscription | $2.99 | per 6 months |
| Annual Subscription | $5.99 | per year |
| Lifetime Purchase | $9.99 | one-time |


### SandyCal

[App page](https://appshunter.io/ios/app/sandycal/id6760809812)

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

**In-app purchases:** none


## Frequently asked questions

### Is RLM free?

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

### Is SandyCal free?

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

### Do RLM or SandyCal have ads?

Neither RLM nor SandyCal shows ads.

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

RLM ships an update monthly, and SandyCal every 2 days. Most recently, RLM was updated on October 15, 2026 and SandyCal on October 17, 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.*