Plus4U Key vs ERA Control
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Plus4U Key
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Plus4U Key enables secure and convenient login to the Plus4U system
ERA Control
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ERA Control APP is a platform for managing heat pump equipment. Through ERA Control, you can complete convenient and fast interactive control between your cell phone and heat pump equipment, and also get real-time information about the operation status of the equipment.
Screenshots
Verdict
The clearest difference is update cadence: ERA Control at every 2 days against Plus4U Key's every 6 months. 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.
Plus4U Key ships an update every 6 months, ERA Control every 2 days. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.
| Parameter | Plus4U Key | ERA Control |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 87 MB | 48 MB |
| Age rating | 4+ | 17+ |
| Developer | Plus4U Net a.s. | Guangdong Mitela Electrical Appliances Technology Co., Ltd. |
In-app purchases
Plus4U Key
No in-app purchases
ERA Control
No in-app purchases
Questions
Is Plus4U Key free?
Is ERA Control free?
Do Plus4U Key or ERA Control have ads?
Which is updated more often, Plus4U Key or ERA Control?
Other comparisons
