ETi vs Car 4x4
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ETi
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This app is designed to monitor the energy generated in any kind of Solar PV System like Roof Tops & Large Scale Utility Plants. Generation can be monitored on a daily / Weekly /Monthly basis. If multiple plants are assigned to a single login, one can choose the plant from the drop-down menu. For a solar PV generating system that has a weather station installed, Irradiance & temperature will be displayed along with generation data.
Car 4x4
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Remote control tool software for Electric Side Step and Electric Tonneau Cover. For Electric Side Step: it can flexibly open and close the left and right pedals separately, with a safety lock function to prevent misoperation; The color of the flow light on the switch pedal can be flexibly set, supporting built-in color button selection, color ring selection, channel selection, and color palette selection; You can choose to set different flow light styles. For Electric Tonneau Cover: the position and status of the electric roller blinds can be viewed in real time, the electric roller blinds can be opened and closed, and the operation can be paused at any time to ensure safety.
Screenshots
Verdict
The clearest difference is update cadence: ETi at every 2 months against Car 4x4's every 14 months. Car 4x4's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ETi ships an update every 2 months, Car 4x4 every 14 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | ETi | Car 4x4 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months โ better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 โ better |
| Further details โ not scored | ||
| Size | 94 MB | 47 MB |
| Age rating | 4+ | 17+ |
| Developer | EnerMAN Technologies Private Limited | Jiechu Technology Co., Ltd. |
In-app purchases
ETi
No in-app purchases
Car 4x4
No in-app purchases









