Comparison

imp™ vs Digicard Key

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

Head to head
About

imp™

This app works with a smart home device to filter unwanted landline calls, allowing only desired contacts to reach you. It also functions as a remote answering machine for your landline, letting you manage voicemails from anywhere.

Highlights
  • Real-time call filtering
  • Greenlist Technology™
  • Syncs iPhone contacts
  • Remote voicemail access
  • Do Not Disturb mode
  • Invite others to landline
Read full description

Use of the imp app™ requires our WiFi-enabled imp box™ (sold separately). Meet imp™ - the smart, simple, and easy solution for making landline spam calls go away. Powered by our Greenlist Technology™, the imp app, and imp box work together to eliminate all unwanted landline calls. This real-time call-filtering technology silently handles the calls you don't want to deal with, freeing you up to focus on welcoming only those calls you actually want to receive. With your imp box in place, the app gives your landline phone superpowers. After seamlessly syncing your iPhone's contacts with your landline at setup, you are ready to receive calls only from people you want to talk to. That means no more spam, scam, telemarketing, robo, or any other unwanted caller of any shape or size. imp is the first smart home answering machine, allowing you to receive and listen to your home's landline voicemails no matter where in the world you are. imp-sters also have the ability to put their landline into "Do Not Disturb" mode, as well as invite others to your landline. Created by our team of experts from the fields of old-school landline technology, secure networks, and modern telecommunications, imp is a new approach to your landline phone experience. With imp you now have the power to welcome calls by design, and silence the rest. To learn more about imp, visit us at: www.joinimp.com

About

Digicard Key

Verify the authenticity of tagged items by scanning NFC tags. Access detailed information, origin, and ownership history stored on a blockchain. Claim ownership of items and ensure their provenance.

Highlights
  • Scan NFC tags
  • Verify item authenticity
  • View item information and history
  • Claim item ownership
  • Blockchain-recorded data
  • Supply chain verification
Read full description

The Digicard Key mobile application helps users verify the authenticity of tagged items on the Digicard Key Network. This app is used to scan NFC tags affixed to items on the Network. Items are linked to Digital Landing Pages containing the item’s information, source of origin, supply chain verification points, and history of ownership. Users may also claim ownership of items by proving items are in their possession. Tagged items cannot be replicated and all scan data is recorded to blockchain making the information captured immutable. For assurance and confidence, buyers, collectors, and investors should demand Digicard Key.

Screenshots

imp™3 screens
Digicard Key4 screens

Verdict

The call

The clearest difference is ads: imp™ at none against Digicard Key's shown. imp™ also leads on monetization model (free vs ad-supported) and update cadence (every 2 months vs every 4 months). On price, rating, 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for imp™ against 5.0 for Digicard Key. That said, the two scores are not equally well evidenced: imp™ has 12 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

imp™ ships an update every 2 months, Digicard Key every 4 months. The most recent releases landed on June 3, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
imp™ versus Digicard Key: the parameters behind the verdict, then further details
Parameterimp™Digicard Key
PriceFreeFree
Rating5.0 (12 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings12 — better2
Update frequencyEvery 2 months — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.1 — better15.1
Further details — not scored
Size36 MB33 MB
Age rating4+4+
DeveloperIts My Phone, IncDigicard Key LLC

Customer experience

imp™

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Digicard Key

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

imp™

No in-app purchases

None

Digicard Key

No in-app purchases

Questions

Is imp™ free?
imp™ is free to download, with no in-app purchases.
Is Digicard Key free?
Digicard Key is free to download, with no in-app purchases.
Which has better reviews, imp™ or Digicard Key?
imp™ and Digicard Key are both rated 5.0 out of 5 on the App Store, from 12 and 2 ratings respectively.
Do imp™ or Digicard Key have ads?
Digicard Key shows ads; imp™ does not.
Which is updated more often, imp™ or Digicard Key?
imp™ ships an update every 2 months, and Digicard Key every 4 months. Most recently, imp™ was updated on June 3, 2026 and Digicard Key on September 30, 2026.

Other comparisons