# Essential Calculator vs RPMS

The clearest difference is update cadence: Essential Calculator at every 4 months against RPMS's every 45 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Essential Calculator ships an update every 4 months, RPMS every 45 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Essential Calculator | RPMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/essential-calculator/id1151178028/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 45 months |
| Monetization | Free | — |
| Size | 2 MB | 1 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CyberMoai](https://appshunter.io/developer/553890347) | [Shawn Mckenzie](https://appshunter.io/developer/1583416224) |

## What reviewers say

### Essential Calculator

[App page](https://appshunter.io/ios/app/essential-calculator/id1151178028)

Perform basic mathematical calculations with a clean, minimalist interface. Get instant results for your equations on your iPhone or iPod touch.

**Highlights:** Basic mathematical equations, Instant results, Minimalist interface, iPhone and iPod touch support

**In-app purchases:** none


### RPMS

[App page](https://appshunter.io/ios/app/rpms/id1583416222)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Essential Calculator free?

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

### Is RPMS free?

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

### Do Essential Calculator or RPMS have ads?

Neither Essential Calculator nor RPMS shows ads.

### Which is updated more often, Essential Calculator or RPMS?

Essential Calculator ships an update every 4 months, and RPMS every 45 months. Most recently, Essential Calculator was updated on October 24, 2026 and RPMS on October 25, 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.*