# BATTech by RN vs LumioCalc

The clearest difference is in-app purchases: BATTech by RN at none against LumioCalc's 1. BATTech by RN also leads on iOS requirement (15.5 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. LumioCalc sells 1 one-off in-app purchase. BATTech by RN asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BATTech by RN | LumioCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lumiocalc-math-calculator/id6759477183/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 38 MB | 27 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ramesh Natarajan Kailad](https://appshunter.io/developer/1789729225) | [Nathan Booth](https://appshunter.io/developer/1878878289) |

## What reviewers say

### BATTech by RN

[App page](https://appshunter.io/ios/app/battech-by-rn/id6740395915)

**In-app purchases:** none


### LumioCalc

[App page](https://appshunter.io/ios/app/lumiocalc-math-calculator/id6759477183)

A fast and customizable scientific calculator for iPhone and iPad. It offers advanced functions, a scrollable history, and premium themes for a personalized user experience. Ideal for students, engineers, and everyday calculations.

**Highlights:** Scientific calculator functions, Degree/radian modes, Full expression support, Scrollable calculation history, Premium themes and custom styling, Standard and scientific layouts

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is BATTech by RN free?

BATTech by RN is free to download, with no in-app purchases.

### Is LumioCalc free?

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

### Do BATTech by RN or LumioCalc have ads?

Neither BATTech by RN nor LumioCalc shows ads.

### Which is updated more often, BATTech by RN or LumioCalc?

BATTech by RN ships an update every 2 months, and LumioCalc every 2 months. Most recently, BATTech by RN was updated on October 28, 2026 and LumioCalc on October 31, 2026.

---

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