Comparison

E vs ProximiKey

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Your new digital key solution

Free

🌟 Lifestyle

No ratingsView app →

About

E

Features

Read full description

With the “E-locks” App you can operate and manage your electronic “E-Win” patio- and window lock and/or your “E-Pad” Bluetooth padlock. For further details see our animations and user guides on www.siso.dk

About

ProximiKey

Features

Read full description

ProximiKey is a digital key solution that enables you to use your Iphone as a key to the locks. ProximiKey is safe, easy and convenient to use and if needed, the access can be shared with friends and family You can have up to 4 locks connected to the app. The solution is powered by NFC tehnology and does not require any additional Iphone settings. The app does not require any user creation with email etc. and ProximiKey will never collect any personal information. ProximiKey is for everyone who wants to replace one or more physical keys in their keybundle.

Screenshots

E3 screens

ProximiKey4 screens

Verdict

The call

The clearest difference is iOS requirement: E at 10.0 against ProximiKey's 13.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

E ships an update every 11 months, ProximiKey every 13 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 5 level

E versus ProximiKey: the parameters behind the verdict, then further details
Parameter	E	ProximiKey
Price	Free	Free
Update frequency	Every 11 months — better	Every 13 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	10.0 — better	13.0
Further details — not scored
Size	24 MB	18 MB
Age rating	4+	4+
Developer	Mark Deelman	ProximiKey Aps

In-app purchases

None

E

No in-app purchases

None

ProximiKey

No in-app purchases

Questions

Is E free?

E is free to download, with no in-app purchases.

Is ProximiKey free?

ProximiKey is free to download, with no in-app purchases.

Do E or ProximiKey have ads?

Neither E nor ProximiKey shows ads.

Which is updated more often, E or ProximiKey?

E ships an update every 11 months, and ProximiKey every 13 months. Most recently, E was updated on October 19, 2026 and ProximiKey on October 7, 2026.