# BatteryDisplay vs ProMasters Only

The clearest difference is price: BatteryDisplay at Free against ProMasters Only's $69.99. BatteryDisplay also leads on update cadence (every 6 weeks vs every 7 months) and review sentiment (100% vs 79%). ProMasters Only's advantage is ratings volume (21 vs 2). On rating, ads, in-app purchases and device support there is nothing between them.

BatteryDisplay is free to download; ProMasters Only costs $69.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.5 for BatteryDisplay against 4.5 for ProMasters Only. That said, the two scores are not equally well evidenced: ProMasters Only has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of BatteryDisplay's written reviews are positive against 79% of ProMasters Only's.

BatteryDisplay ships an update every 6 weeks, ProMasters Only every 7 months. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | BatteryDisplay | ProMasters Only |
| --- | --- | --- |
| Price | **Free** | $69.99 |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/batterydisplay/id1476044653/reviews) | [4.5 (21 ratings)](https://appshunter.io/ios/app/promasters-only/id6737483353/reviews) |
| Number of ratings | 2 | **21** |
| Positive reviews | **100.0% of reviews** | 78.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | **Free** | Paid |
| Size | 12 MB | 27 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anthony Scappaticci](https://appshunter.io/developer/1242833488) | [Kip Amore](https://appshunter.io/developer/1776662732) |

## What reviewers say

### BatteryDisplay

[App page](https://appshunter.io/ios/app/batterydisplay/id1476044653)

Monitor the health of your KS2 Lithium Batteries through a Bluetooth interface. This app allows you to view battery status and generate reports for analysis by KS2 Corp.

**Highlights:** Bluetooth battery monitoring, Battery health status, Report generation for KS2 Corp, Interface with KS2 Lithium Batteries

**Features:** macOS Compatibility

**In-app purchases:** none


### ProMasters Only

[App page](https://appshunter.io/ios/app/promasters-only/id6737483353)

This app provides diagnostic tools and information specifically for Ram ProMaster vans. It offers real-time gauge monitoring, trouble code explanations, and a repair log, requiring a separate OBD dongle purchase.

**Highlights:** Trouble code reader with explanations, Real-time gauge monitoring (Voltage, Oil Pressure, Coolant Temp, etc.), Transmission fluid temperature gauge, Oil change and repair log book, Repair shop finder, Technical library with videos, Fluids and consumables specifications

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

**In-app purchases:** none


## Frequently asked questions

### Is BatteryDisplay free?

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

### Is ProMasters Only free?

ProMasters Only costs $69.99, with no in-app purchases.

### Which has better reviews, BatteryDisplay or ProMasters Only?

BatteryDisplay and ProMasters Only are both rated 4.5 out of 5 on the App Store, from 2 and 21 ratings respectively.

### Do BatteryDisplay or ProMasters Only have ads?

Neither BatteryDisplay nor ProMasters Only shows ads.

### Which is updated more often, BatteryDisplay or ProMasters Only?

BatteryDisplay ships an update every 6 weeks, and ProMasters Only every 7 months. Most recently, BatteryDisplay was updated on October 5, 2026 and ProMasters Only on October 17, 2026.

---

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