KeepAi vs W
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeepAi
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Many homeowners, BRF etc., have invested in solar panels in recent years as a clean energy alternative to bringing down electricity costs. Make the solar power battery system work for you even when the sun isn’t shining. With El Plus Plus AI technology your system will buy/sell electricity to meet your household needs and save you money.
W
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The W-Modbus app has arrived! Upgrade firmware for LumenRadio W-Modbus 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 Modbus RTU 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-Modbus app requires W-Modbus 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.
Screenshots
Verdict
KeepAi and W are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
KeepAi ships an update every 5 weeks, W every 2 months. The most recent releases landed on March 4, 2026 and September 11, 2026 respectively.
| Parameter | KeepAi | W |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15 — better |
| Further details — not scored | ||
| Size | 52 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | El Plus Plus AB | LumenRadio AB |
In-app purchases
KeepAi
No in-app purchases
W
No in-app purchases
