Comparison

IMMUNE Messenger vs prefGrab™

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

Head to head
About

IMMUNE Messenger

This secure messaging app offers end-to-end encrypted chats and calls, with a built-in crypto wallet for easy Bitcoin transfers directly within conversations. It prioritizes user privacy by not storing data on servers, ensuring all communications remain on your device.

Highlights
  • End-to-end encrypted messaging
  • P2P voice and video calls
  • Built-in Bitcoin wallet
  • Direct Bitcoin transfers
  • Ad-free experience
  • File and media sharing
Features
Read full description

IMMUNE is an innovative, new messenger with a built-in crypto wallet, a high degree of security and protection for your data. The built-in crypto wallet allows you to easily and quickly transfer to your friends and business partners - sending and receiving bitcoins directly from the chat. IMMUNE does not store personal correspondence and contacts on its servers, all data remain on your device. All correspondence is protected with end-to-end encryption using strong, proven algorithms (ECIES, AES256). IMMUNE contains all the usual messenger functions: Sending text and voice messages Voice and video calls Sending and receiving files of any type Sending and receiving images and videos Sending and receiving contacts from the address book The IMMUNE crypto wallet allows you to: Store bitcoins on the mobile device Transfer bitcoins to other people by phone number or a wallet address Restore the wallet using a secret phrase when reinstalling the app or changing the phone number IMMUNE uses the technology that allows you to connect to your companion directly bypassing intermediate servers, which gives high quality calls without interference and distortion. IMMUNE is an ad-free application. Just you and your partners in conversation, no annoying banners or pop-up windows.

About

prefGrab™

This social app helps you discover and share preferences for various items, from food and drinks to gift ideas. Easily find out what friends and family like to make informed decisions when hosting or buying gifts. Share your own preferences to help others.

Highlights
  • Create user profiles
  • Search other users' preferences
  • Share preferences for food, drinks, and gifts
  • Add photos and URLs to preferences
  • Access 'grabBag' for gift ideas and custom categories (subscription)
  • Control who sees your preferences
Features
Read full description

prefGrab™ was designed to be a social app with purpose. We’ve all found ourselves in a situation, for example, where we invited guests to our home and wondered what beverages and food to serve, or needed to buy a present for someone and just didn’t know WHAT…prefGrab™ solves that. We have taken an idea and developed it into an app that seeks to solve that problem in an engaging way. In the age of social media and the spirit of sharing, prefGrab™ offers that you can “Grab just anything or Grab what we prefer”. While it seems every tech-able person is busy building algorithms to best guess our preferences, prefGrab™ approaches it the old fashioned way by simply asking you. prefGrab™ allows you to set up a profile for yourself, and then search the profiles of other users. Our profiles share our preferences for anything from a preferred candy, beverage, restaurant, sports team, gift card, gift idea and more. Include a photo or URL. That way the next time you’re invited to someone’s house for dinner, you know what kind of wine they prefer, so you Grab that on the way. The next time your child is invited to a birthday party, you know what to buy for a gift. You can tell us about a restaurant you like, share what you’re reading, watching or a video game you’re playing. Maybe you’re going to stop for coffee on the way to your child’s soccer game and want to Grab a coffee for someone else. Well, you get the idea now. There is a free version and a paid subscription version. With the free version, users can search for and read other users' preferences with the exception of the “grabBag”. To be able to include preferences for gift ideas and gift cards, you pay for a subscription to access the grabBag. Those who have subscribed for the grabBag, can then view others’ grabBag when given access to view those items. So all users can search and view preferences, but only paid subscribers can use the grabBag and view others’ grabBags when invited. The grabBag gives you access to additional categories like gift ideas, gift cards, a custom category, and allows you to decide who sees what of any of your preferences. What do you prefer? Give it a try! Privacy Policy link - https://app.termly.io/document/privacy-policy/27f5149e-2405-412a-90b4-3b03720cd12d Terms of Uses link - https://app.termly.io/document/terms-of-use-for-ios-app/6f4f19cd-8667-4250-9e98-15757b31719a

Screenshots

IMMUNE Messenger4 screens
prefGrab™4 screens

Verdict

The call

The clearest difference is in-app purchases: IMMUNE Messenger at none against prefGrab™'s 2. IMMUNE Messenger also leads on ads (none vs shown). prefGrab™'s advantage is update cadence (fortnightly vs every 6 weeks) and ratings volume (7 vs 1). On price, rating, device support and iOS requirement 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. prefGrab™ sells 2 in-app purchases, starting at $0.99 per month. IMMUNE Messenger asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for IMMUNE Messenger against 5.0 for prefGrab™. That said, the two scores are not equally well evidenced: prefGrab™ has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

IMMUNE Messenger ships an update every 6 weeks, prefGrab™ fortnightly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 4 level
IMMUNE Messenger versus prefGrab™: the parameters behind the verdict, then further details
ParameterIMMUNE MessengerprefGrab™
PriceFreeFree
Rating5.0 (1 ratings)5.0 (7 ratings)
Number of ratings17 — better
Update frequencyEvery 6 weeksFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.5 — better15.6
Further details — not scored
Size88 MB48 MB
Age rating17+17+
DeveloperIMM Money Messenger LimitedPREFGRAB, INC.

Customer experience

IMMUNE Messenger

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

prefGrab™

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

IMMUNE Messenger

No in-app purchases

2 purchases

prefGrab™

Subscriptions2
  • Monthly Subscription$0.991 Month
  • Yearly Subscription$9.991 Year

Questions

Is IMMUNE Messenger free?
IMMUNE Messenger is free to download, with no in-app purchases.
Is prefGrab™ free?
prefGrab™ is free to download, with in-app purchases available.
Which has better reviews, IMMUNE Messenger or prefGrab™?
IMMUNE Messenger and prefGrab™ are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.
Do IMMUNE Messenger or prefGrab™ have ads?
prefGrab™ shows ads; IMMUNE Messenger does not.
Which is updated more often, IMMUNE Messenger or prefGrab™?
IMMUNE Messenger ships an update every 6 weeks, and prefGrab™ fortnightly. Most recently, IMMUNE Messenger was updated on October 24, 2026 and prefGrab™ on October 23, 2026.

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