Comparison

Crowdkeep vs OptOutCode Easy Device Opt

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

Head to head
About

Crowdkeep

This app provides a real-time, georeferenced view of people and devices. It offers advanced AI and analytics to notify users when specific rules are triggered and allows for configuration of platform behaviors based on user actions or predefined rules.

Highlights
  • Real-time georeferenced view
  • Device and people tracking
  • Rule-triggered notifications
  • AI and analytics capabilities
  • Behavioral analysis
  • Platform behavior configuration
Features
Read full description

This mobile App allows a user to have a real time georeferenced view of people/devices, get notified when a rule is triggered and/or admin and configure behaviours on the platform. With advanced AI and analytics capabilities, this app allows a user to have a better control and take actions based on behaviours or previous defined rules.

About

OptOutCode Easy Device Opt

This utility app simplifies the process of opting out of commercial surveillance by allowing users to easily rename their devices with a specific prefix. It provides a universal and decentralized mechanism to signal a desire not to have data sold or shared, enhancing user privacy across various connected devices.

Highlights
  • Universal opt-out mechanism
  • Decentralized and privacy-preserving
  • Consumer-friendly device renaming
  • Automated opt-out switch
  • Business-friendly detection protocols
Features
Read full description

Saying “No” to commercial surveillance is as easy as renaming your device & our app makes it even easier! Invented by Privacy4Cars, OptOutCode is a new Universal Opt-Out Mechanism that only requires to add the prefix 0$S = Do Not (zero) Sell (dollar) or Share (capital letter S) as the first three letters of the name of consumers’ smartphones, computers, and wi-fi router. More info at https://optoutcode.com/ OptOutCode has four distinguishing advantages: 1. It is truly Universal: OptOutCode is compatible with smartphones, laptops, tablets,routers, the apps that run on them and the IoTs they connect to, including vehicles, smart appliances, tracking beacons, and more. 2. It’s fully decentralized: OptOutCode does not require to build, maintain, query, or secure a central database of opting-out users, devices, or apps. The signal is detected locally: either by the programs and apps running on the device that has OptOutCode turned on (e.g., an app on a smartphone), or by other devices that connect to the device of the Consumer that has OptOutCode turned on (e.g. a SmartTV connected to a Wi-Fi router with OptOutCode on, a fitness watch connected to a smartphone with OptOutCode on). This architecture makes it privacy-preserving, more secure, without a single point of failure, cheaper, and faster. 3. It’s Consumer-friendly: All Consumers need to do to turn on OptOutCode is simply rename their devices by adding “0$S” as the first three characters. For instance, rename their phone from “My Phone” to “0$S My Phone”. Most Consumers can do it themselves by going through the settings of their devices in less than a minute, but we have also written code to automate the task of turning OptOutCode on or off with a simple “switch” on an app. 4. It’s business-friendly: Businesses can easily read and parse the “0$S” opt-out code from each device using backward-compatible and future proof protocols that require no special authorizations. We want to thank Professor Sebastian Zimmeck of Wesleyan University (credited with inventing GPC) for recently pointing out to us that Google has a somewhat similar protocol to allow users to opt-out of their Wi-Fi routers’ signals to be used by Google Maps, providing an independent industry validation that a portion of the name of a device can be used as an opt-out signal. This app has three purposes: 1. It makes it even easier for consumers to turn on OptOutCode on their iOS devices 2. It demonstrates how easy it is for companies who make apps (social media, gaming, dating, mapping, etc.) to detect OptOutCode and understand that consumer wants to opt-out of targeted advertising and other privacy-invading AdTech. Similarly, it demonstrates how easy it is for companies who make and/or deploy IoTs that connect to devices with OptOutCode to respect the privacy of those users. 3. It offers companies who want to promote privacy a simple way to integrate the OptOutCode “switch” into their own apps (we also created a banner they can add to their websites to help their web visitors enable Global Privacy Control (a Universal Opt-Out Mechanism for browsers) and OptOutCode to extend their protections beyond to web to apps and IoTs they connect to.

Screenshots

Crowdkeep4 screens
OptOutCode Easy Device Opt4 screens

Verdict

The call

The clearest difference is rating: Crowdkeep at 5.0 against OptOutCode Easy Device Opt's 4.0. Crowdkeep also leads on iOS requirement (13.0 vs 15.0). On price, ratings volume, update cadence and ads 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

Crowdkeep holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Crowdkeep ships an update every 2 weeks, OptOutCode Easy Device Opt fortnightly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Crowdkeep versus OptOutCode Easy Device Opt: the parameters behind the verdict, then further details
ParameterCrowdkeepOptOutCode Easy Device Opt
PriceFreeFree
Rating5.0 (1 ratings) — better4.0 (1 ratings)
Positive reviews—0.0% of reviews
Number of ratings11
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size146 MB1 MB
Age rating4+4+
DeveloperCrowdkeep LLCPrivacy4Cars. LLC

Customer experience

Crowdkeep

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

OptOutCode Easy Device Opt

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Crowdkeep

No in-app purchases

None

OptOutCode Easy Device Opt

No in-app purchases

Questions

Is Crowdkeep free?
Crowdkeep is free to download, with no in-app purchases.
Is OptOutCode Easy Device Opt free?
OptOutCode Easy Device Opt is free to download, with no in-app purchases.
Which has better reviews, Crowdkeep or OptOutCode Easy Device Opt?
Crowdkeep is rated higher. Crowdkeep averages 5.0 out of 5 from 1 ratings, while OptOutCode Easy Device Opt averages 4.0 from 1 ratings.
Do Crowdkeep or OptOutCode Easy Device Opt have ads?
Neither Crowdkeep nor OptOutCode Easy Device Opt shows ads.
Which is updated more often, Crowdkeep or OptOutCode Easy Device Opt?
Crowdkeep ships an update every 2 weeks, and OptOutCode Easy Device Opt fortnightly. Most recently, Crowdkeep was updated on October 3, 2026 and OptOutCode Easy Device Opt on October 7, 2026.

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