Comparison

Door Knock vs PrinterZap

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

Head to head

Door Knock Pro

Zap printer supplies

★ 4.84 ratingsView app →

About

Door Knock

Features

Read full description

Take your neighborhood domination to the next level with DOORKNOCK PRO! Our powerful platform equips you with the tools and strategies needed to assert your presence and achieve unrivaled success in door-to-door sales.

About

PrinterZap

Discover local printers and check their ink or toner levels. Order replacement supplies directly from Amazon for convenience. This app offers a simple and quick way to manage printer supplies without ads or paid upgrades.

Highlights

Discover local printers via IPP
Check ink and toner levels
Order supplies on Amazon
No ads
No paid upgrades

Features

Read full description

PrinterZap discovers local printers. Quickly see your local printers and the levels of supplies like ink or toner. Then click on the printer and you can order the correct supplies on Amazon. There are no ads, and no paid upgrades. It's just simple and quick productivity.

Screenshots

Door Knock4 screens

PrinterZap3 screens

Verdict

The call

The clearest difference is update cadence: PrinterZap at every 3 days against Door Knock's every 3 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

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

Door Knock ships an update every 3 weeks, PrinterZap every 3 days. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

Scorecard1 real difference · 9 level

Door Knock versus PrinterZap: the parameters behind the verdict, then further details
Parameter	Door Knock	PrinterZap
Price	Free	Free
Rating	—	4.8 (4 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	4 — better
Update frequency	Every 3 weeks	Every 3 days — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	16.0	15.0 — better
Further details — not scored
Size	89 MB	26 MB
Age rating	4+	4+
Developer	SECURAS	Lawrence Meyer

In-app purchases

None

Door Knock

No in-app purchases

None

PrinterZap

No in-app purchases

Questions

Is Door Knock free?

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

Is PrinterZap free?

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

Do Door Knock or PrinterZap have ads?

Neither Door Knock nor PrinterZap shows ads.

Which is updated more often, Door Knock or PrinterZap?

Door Knock ships an update every 3 weeks, and PrinterZap every 3 days. Most recently, Door Knock was updated on October 2, 2026 and PrinterZap on September 28, 2026.