W vs Optivolt
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
W
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The W-BACnet app has arrived! Upgrade firmware for LumenRadio W-BACnet devices by connecting to and upgrading the LumenRadio Gateway in the network through the app. In the Network map you will find a system overview where you can see signal strength, edit names of wireless nodes as well as seeing the health of the RS485 bus including which BACnet MS/TP address that is connected to that wireless node. You can also connect to any node in the network and change their name (up to 20 characters). The W-BACnet app requires W-BACnet firmware 3.1.1 and above, which can be downloaded from the LumenRadio support webpage. Note that you need to install FW 3.1.1 or above on the gateway from the nRF connect app to enable the functionality. It is also required to have at least 3.0.0 or above on all nodes in the network. You will need to update all nodes individually if they are on version 2.2.3. This will be the last time this is required. All future updates can be done by either this app or from the nRF connect app.
Optivolt
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The charger at your office is a perk. Optivolt helps you make the most of it. Tell Optivolt which days you're in the office, how many free charges you get each month and how much your commute uses. It builds the optimal plan for the whole month: which days to charge, how much battery you'll arrive with each morning, and how you'll finish the month. No spreadsheets. No guesswork. YOUR MONTH AT A GLANCE - A calendar you read in a second: office days, charge days and expected battery, evening by evening. - A battery chart with your charging threshold and month-end target always in view. - Your next charge up front, with arrival level before and after. REMINDERS THAT THINK FOR YOU - Get reminded to book the charger, as early as you like. - If the plan changes and a booked charge is no longer needed, Optivolt tells you in time to cancel it. - On charge-day mornings at 7:00, a heads-up that today is the day. - Mark a charge as booked right from the notification. ALWAYS IN SYNC WITH REALITY Took a detour? Charged at home? Enter the actual value and Optivolt instantly recalculates the rest of the month. Force a charge, skip one, and save sessions when you don't need them. OPTIVOLT PRO One purchase. Yours forever. No subscription. - Corrections with actual battery levels, extra consumption and home charging. - Every month: plan ahead and look back. - Default office days that fill in your calendar automatically. - History with a chart of your charges over the last year. - A beautifully designed monthly PDF report, ready to share. DESIGNED FOR iOS 26 A Liquid Glass interface, light and dark mode, and your data stays yours โ on your iPhone and in your iCloud. No account, no ads, no tracking. Optivolt. The right charge, at the optimal time.
Screenshots
Verdict
The clearest difference is in-app purchases: W at none against Optivolt's 1. W also leads on iOS requirement (15 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Optivolt sells 1 one-off in-app purchase. W asks for nothing beyond the download.
| Parameter | W | Optivolt |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | โ |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 29 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | LumenRadio AB | Stefano Ferrario |
In-app purchases
W
No in-app purchases
Optivolt
- Optivolt Pro$2.99









