# OPTIMA Lithium Bluetooth vs R9 Companion

The clearest difference is review sentiment: R9 Companion at 100% against OPTIMA Lithium Bluetooth's 0%. R9 Companion also leads on rating (4.6 vs 3.7) and update cadence (every 6 weeks vs every 3 months). OPTIMA Lithium Bluetooth's advantage is price (Free vs $11.99) and in-app purchases (none vs 4). On ads and device support there is nothing between them.

OPTIMA Lithium Bluetooth is free to download; R9 Companion costs $11.99 up front. R9 Companion sells 4 one-off in-app purchases. OPTIMA Lithium Bluetooth asks for nothing beyond the download.

R9 Companion holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews point the same way: 0% of OPTIMA Lithium Bluetooth's written reviews are positive against 100% of R9 Companion's.

OPTIMA Lithium Bluetooth ships an update every 3 months, R9 Companion every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | OPTIMA Lithium Bluetooth | R9 Companion |
| --- | --- | --- |
| Price | **Free** | $11.99 |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/optima-lithium-bluetooth/id6453360504/reviews) | **[4.6 (11 ratings)](https://appshunter.io/ios/app/r9-companion/id6470324039/reviews)** |
| Number of ratings | 3 | **11** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | **Free** | Paid |
| Size | 42 MB | 14 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Clarios LLC](https://appshunter.io/developer/1481852921) | [Angela Mcarthur](https://appshunter.io/developer/451676466) |

## What reviewers say

### OPTIMA Lithium Bluetooth

[App page](https://appshunter.io/ios/app/optima-lithium-bluetooth/id6453360504)

Monitor your battery's real-time status, including charge level, voltage, and temperature. Receive safety alerts and customize battery names for easy identification. Connect wirelessly via Bluetooth for convenient access to all essential battery data.

**Highlights:** Real-time State of Charge (SOC), Real-time battery and cell voltages, Real-time internal battery temperature, Battery safety alerts, Customizable battery names

**Features:** macOS Compatibility

**In-app purchases:** none


### R9 Companion

[App page](https://appshunter.io/ios/app/r9-companion/id6470324039)

Enhance your driving experience with intelligent alerts and advanced muting for your radar detector. This app provides duplicate signal rejection, dual horn priority, and high-resolution strength meters for improved accuracy and awareness.

**Highlights:** Duplicate signal rejection, Dual horn priority signal queuing, High-resolution front and rear strength meters, Location-based false silencing (SpotLocks™), Customizable audio alerts, HUD with alert details and color coding, Remote detector setting control

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snacks - Contribution | $1.99 | one-time |
| Drinks - Contribution | $3.99 | one-time |
| Lunch - Contribution | $6.99 | one-time |
| Super Fan - Contribution | $9.99 | one-time |


## Frequently asked questions

### Is OPTIMA Lithium Bluetooth free?

OPTIMA Lithium Bluetooth is free to download, with no in-app purchases.

### Is R9 Companion free?

R9 Companion costs $11.99, and also offers in-app purchases.

### Which has better reviews, OPTIMA Lithium Bluetooth or R9 Companion?

R9 Companion is rated higher. OPTIMA Lithium Bluetooth averages 3.7 out of 5 from 3 ratings, while R9 Companion averages 4.6 from 11 ratings.

### Do OPTIMA Lithium Bluetooth or R9 Companion have ads?

Neither OPTIMA Lithium Bluetooth nor R9 Companion shows ads.

### Which is updated more often, OPTIMA Lithium Bluetooth or R9 Companion?

OPTIMA Lithium Bluetooth ships an update every 3 months, and R9 Companion every 6 weeks. Most recently, OPTIMA Lithium Bluetooth was updated on November 3, 2026 and R9 Companion on November 3, 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.*