EST vs AmpWidgets
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EST
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With the EST-100 Smart Thermostat any electric storage water heater will become a Smart Home device. Integrated Wi-Fi module enables wireless connection to the water heater. This app allows you to control and configure your EST-100 thermostat from your iOS device, either locally, or remotely.
AmpWidgets
Monitor your Victron energy system in real-time with customizable widgets for your iPhone, iPad, Mac, and Apple Watch. View battery status, solar production, and more without opening the main app.
- Real-time battery and solar monitoring
- Home Screen, Lock Screen, and StandBy widgets
- macOS desktop and Notification Center widgets
- Apple Watch complications
- Customizable metric display
- Light, Dark, and Auto appearance modes
- Background data refresh
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Never miss a thing with your Victron system. AmpWidgets brings powerful battery, solar, tank, sensor, and system monitoring to every screen you own. Check your most important Victron VRM data on your iPhone, iPad, Mac, and Apple Watch — without constantly opening the VRM app. WIDGETS EVERYWHERE • Home Screen widgets for quick system checks • Lock Screen widgets for instant battery and solar metrics • StandBy support for an always-visible display • macOS desktop and Notification Center widgets • Apple Watch complications for glanceable updates on your wrist • A resizable widget that shows one, three, or six metrics at a time SMART ALERTS Create custom rules for the moments that matter: • Battery below your chosen percentage • Current rising above or falling below a threshold • System or battery state changes • Any value that needs your attention AmpWidgets checks your rules automatically in the background and notifies you the moment something changes — with smart cooldowns so you're never spammed. COMPLETE VICTRON MONITORING See more of your system than ever before: • Battery state of charge, voltage, current, and power • Individual cell voltage highs and lows, plus pack balance for lithium banks • Consumed amp-hours and time-to-go • Solar power output, PV voltage, and today's / yesterday's yield • Charge cycles, charged and discharged energy, min/max voltage • Battery temperature, health details, and starter-battery data • Per-device readings for every shunt, BMS, and charger • System status and alarm summaries TANKS, SENSORS & SYSTEM STATES AmpWidgets supports more Victron data than ever, including: • Fresh, grey, fuel, and gas/LPG tank levels — with a combined level per fluid type • Distinct icons so water and gas tanks are instantly recognizable • Temperature, humidity, and pressure sensors, shown by their real device names • Shore- and generator-power detection via AC input voltage • AC input and output, DC loads, and EV charger data • System, battery, inverter, charger, and solar-charger states CUSTOMIZABLE TO YOUR NEEDS Build the monitoring setup that works for you: • Choose exactly which metrics to display • Use simple widgets for a single value, or expand them to show more • Set Light, Dark, or Auto appearance independently for each widget • Rename your devices so they make sense to you • View solar production trend charts • Switch between multiple installations from the dashboard • Try everything instantly with built-in Demo Mode — no account needed APPLE WATCH SUPPORT Keep your Victron system on your wrist: • View battery, solar, tank, and temperature data directly on Apple Watch • Add complications from the watch face gallery • Reliable independent background updates BUILT FOR OFF-GRID LIVING Whether you're in an RV, on a boat, at a cabin, or running a mobile power setup, AmpWidgets helps you stay informed without constantly checking your system manually. See at a glance if your batteries are charging, how much solar you're producing, whether your tanks need attention, and the instant something important changes. WORKS WITH YOUR VRM ACCOUNT AmpWidgets connects directly to your Victron VRM installation. Just enter your Installation ID and API token from vrm.victronenergy.com and you're ready to go. One app, every screen. Download AmpWidgets and take control of your power monitoring.
Screenshots
Verdict
The clearest difference is price: EST at Free against AmpWidgets's $0.99. EST also leads on iOS requirement (13.0 vs 18.4). AmpWidgets's advantage is update cadence (every 2 weeks vs every 3 months) and device support (4 vs 2). On ads and in-app purchases 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
EST is free to download; AmpWidgets costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EST ships an update every 3 months, AmpWidgets every 2 weeks. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.
| Parameter | EST | AmpWidgets |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 13.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 7 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | EuroICC d.o.o. | Northbound House LLC |
In-app purchases
EST
No in-app purchases
AmpWidgets
No in-app purchases









