Cast4All Connect vs De Key Technical
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cast4All Connect
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With Cast4All Connect, installers of smart meters can verify if the meter is connected to the network and installed properly. This app can only be used when you have received a login-code from Cast4All.
De Key Technical
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This app provides access to all maintenance areas for the contract partners from Lieven de Key. After installation and registration, the phone will function as a digital key. Access is provided only for the contract period and necessary areas. In addition to the digital key, there is information about the location of the maintenance area, contact options, reporting facilities and other useful information.
Screenshots
Verdict
Cast4All Connect and De Key Technical 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.
Cast4All Connect ships an update every 4 months, De Key Technical every 6 months. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.
| Parameter | Cast4All Connect | De Key Technical |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | NSX | GuestCompass |
In-app purchases
Cast4All Connect
No in-app purchases
De Key Technical
No in-app purchases
