Ultimus Battery vs MTEP App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultimus Battery
Monitor your battery's health and performance wirelessly from your iOS device. Track cycle life, state of charge, voltage, current, and temperature with easy-to-read gauges and text alerts. Connect to individual batteries or battery banks up to 15 feet away.
- Wireless battery monitoring
- Track cycle life
- State of Charge (SOC) percentage
- Display voltage, current, temperature
- Battery event alerts
- Bluetooth BLE 4.0+ connectivity
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"FEATURES * No need for a separate battery monitor⋯save hundreds of dollars! * Wirelessly connect to each battery or your battery bank from your IOS device. * Access each BMS independently or the battery bank as a group. * Track Cycle Life on each battery. * Displays State Of Charge (SOC) percentage with a graphic display. * Display voltage, charging or discharging current, and temperature. * Easy to read gauges. * Battery Events displayed in easy to understand text. * Works up to 15 feet from the battery. * Displays each battery signal level. * Uses Bluetooth BLE 4.0 or later * Compatible with iPhones with IOS 7.0 or later"
MTEP App
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The MTEP Mobile App is your control center for participating in the Maine Transactive Energy Pilot. Monitor your registered devices in real-time, adjust your responsiveness preferences, and track your incentives - all from your smartphone or a tablet.
Screenshots
Verdict
The clearest difference is update cadence: MTEP App at every 6 months against Ultimus Battery's every 12 months. Ultimus Battery's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Ultimus Battery ships an update every 12 months, MTEP App every 6 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | Ultimus Battery | MTEP App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 12 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 17 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Larry Crutcher | Post Road Foundation |
In-app purchases
Ultimus Battery
No in-app purchases
MTEP App
No in-app purchases
Questions
Is Ultimus Battery free?
Is MTEP App free?
Do Ultimus Battery or MTEP App have ads?
Which is updated more often, Ultimus Battery or MTEP App?
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