Overkill Solar vs ProMasters Only
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Overkill Solar
This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.
- Monitor cell voltage and capacity
- Control charging and discharging ports
- Calibrate voltage and current
- Configure balancer and protection values
- Log voltage, current, and power
- Monitor BMS alarms and temperature
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Overkill Solar iOS App allows users to connect with the Overkill Solar Battery Management System (BMS). It can monitor voltage of the cells, total capacity, charging and discharging current, and switch the charging and discharging ports on or off. Features: - change bluetooth advertising name - unlock hardware protected BMS - save or load BMS configurations - calibrate cells voltage and charging or discharging current - log maximum or minimum voltage, current and power - enable and configure the balancer - modify the capacity settings - monitor temperature - monitor BMS alarms - import and export .fig files - set level 2 and 3 advanced protection values
ProMasters Only
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.
- 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
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Welcome to the ProMasters Only App version 2.0. This is a phone or tablet app written specifically for the Ram ProMaster. Covers Promaster 1500, 2500, and 3500 all years. App requires hardware purchase of an OBD dongle ($15-30 on Amazon). Approved dongles and links to them are in the demonstration video: https://youtu.be/XWhNLE6Peno New and Improved for 2.0: * Gauge Alarms * One-touch Login * Wake Lock * Heads Up Display Mode * Gauge explanation videos * Oil Change/Repair log book * Repair Shop Finder * Technical Library of videos covering ALL topics * Fluids and Consumables Specs This app features a trouble code reader, and if any of the common codes for ProMaster come up it provides a link for a detailed explanation of that code, what causes it, and how to fix it. Gauges for Voltage, Oil Pressure, Coolant Temperature, Engine power, and Fuel trims. Plus the ALL IMPORTANT Transmission fluid temperature gauge - monitoring transmission temps may save your transmission! Note: transmission temp gauge does not work on 2022-later vans, but is not as important on those newer transmissions. Note: app not fully implemented for the diesel ProMasters. App is free upgrades for life.
Screenshots
Verdict
The clearest difference is price: Overkill Solar at Free against ProMasters Only's $69.99. Overkill Solar also leads on review sentiment (100% vs 79%) and iOS requirement (13.4 vs 15.6). ProMasters Only's advantage is chart position (#166 vs unranked). On rating, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Overkill Solar is free to download; ProMasters Only costs $69.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Overkill Solar holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 16 and 21 respectively. Written reviews point the same way: 100% of Overkill Solar's written reviews are positive against 79% of ProMasters Only's.
Overkill Solar ships an update every 4 months, ProMasters Only every 7 months. The most recent releases landed on September 28, 2026 and October 13, 2026 respectively.
| Parameter | Overkill Solar | ProMasters Only |
|---|---|---|
| Price | Free — better | $69.99 |
| Rating | 4.7 (16 ratings) — better | 4.5 (21 ratings) |
| Positive reviews | 100.0% of reviews — better | 78.6% of reviews |
| Number of ratings | 16 | 21 — better |
| Update frequency | Every 4 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #166 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 21 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | Overkill Solar LLC | Kip Amore |
Customer experience
Overkill Solar
ProMasters Only
In-app purchases
Overkill Solar
No in-app purchases
ProMasters Only
No in-app purchases
