# R2 Touch vs ETERNAL LITHIUM

The clearest difference is price: ETERNAL LITHIUM at Free against R2 Touch's $5.99. ETERNAL LITHIUM also leads on update cadence (every 3 months vs every 10 months) and rating (5.0 vs 4.8). R2 Touch's advantage is ratings volume (9 vs 1) and iOS requirement (8.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

ETERNAL LITHIUM is free to download; R2 Touch costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ETERNAL LITHIUM holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: R2 Touch has 9 ratings behind it against 1, so its average is the more settled of the two.

R2 Touch ships an update every 10 months, ETERNAL LITHIUM every 3 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | R2 Touch | ETERNAL LITHIUM |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.8 (9 ratings)](https://appshunter.io/ios/app/r2-touch/id631960765/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eternal-lithium/id6748685410/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 4 MB | 42 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Neil Hutchison](https://appshunter.io/developer/1521173905) | [Nanchang Yepai Technology Co., Ltd.](https://appshunter.io/developer/1503296093) |

## What reviewers say

### R2 Touch

[App page](https://appshunter.io/ios/app/r2-touch/id631960765)

This app serves as a remote control for R2-D2 replica robots equipped with specific receiver boards. It allows users to control various droid functions like dome panels, holoprojectors, sounds, and lighting. Users can upload their own sound files for playback and customize button commands.

**Highlights:** Control dome panels, holoprojectors, sounds, and lighting, Upload custom sound files, Programmable ASCII string commands, WiFi and serial output options, Customizable buttons, R2-D2 inspired interface

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

**In-app purchases:** none


### ETERNAL LITHIUM

[App page](https://appshunter.io/ios/app/eternal-lithium/id6748685410)

This platform provides military-grade operational intelligence for lithium power systems. It transforms real-time data into enhanced safety and performance control through AI-powered tactics, cross-domain energy tracking, and cell defense.

**Highlights:** AI-powered State of Charge prediction, Cross-domain energy flow tracking, Sentinel cell defense and threat alerts, Auto-calibration for extreme temperatures, 10-second threat mapping, Remote countermeasures via Triad Response Network, ISO 21782 compliance auditing

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

**In-app purchases:** none


## Frequently asked questions

### Is R2 Touch free?

R2 Touch costs $5.99, with no in-app purchases.

### Is ETERNAL LITHIUM free?

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

### Which has better reviews, R2 Touch or ETERNAL LITHIUM?

ETERNAL LITHIUM is rated higher. R2 Touch averages 4.8 out of 5 from 9 ratings, while ETERNAL LITHIUM averages 5.0 from 1 ratings.

### Do R2 Touch or ETERNAL LITHIUM have ads?

Neither R2 Touch nor ETERNAL LITHIUM shows ads.

### Which is updated more often, R2 Touch or ETERNAL LITHIUM?

R2 Touch ships an update every 10 months, and ETERNAL LITHIUM every 3 months. Most recently, R2 Touch was updated on November 1, 2026 and ETERNAL LITHIUM on November 5, 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.*