But vs E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
But
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It allows remote calling of elevators that support But-Call.
E
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An APP dedicated to debugging the motherboard of the Envision elevator
Screenshots
Verdict
The clearest difference is update cadence: But at every 5 days against E's every 5 weeks. 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.
But ships an update every 5 days, E every 5 weeks. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.
| Parameter | But | E |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 34 MB | 81 MB |
| Age rating | 4+ | 12+ |
| Developer | BUTKON ASANSOR MUHENDISLIK INSAAT DOGAL GAZ GIDA SANAYI VE TICARET ANONIM SIRKETI | 深圳市英威腾电气股份有限公司 |
In-app purchases
But
No in-app purchases
E
No in-app purchases
