# REX: Receptive Expressive ID — Visual identification for kids > Digital flashcards for teaching children receptive and expressive identification. (iPhone/iPad app by Warren Mui.) - Source: https://appshunter.io/ios/app/rex-receptive-expressive-id/id1635884119 (this page in markdown: same URL + `.md`) - Developer: [Warren Mui](https://appshunter.io/developer/1635884121) - Category: Education, Medical - Price: $9.99 - Rating: 3.50/5 from 4 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 15.5 · 57 MB - Languages: English - Released: 2022-08-18 - Data updated: 2026-07-30 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/rex-receptive-expressive-id/id1635884119/reviews.md ## What is REX? "REX", short for "Receptive Expressive ID (identification)", is a purpose-built app intended for use between an adult (parent, teacher, therapist, etc.) and a client (kiddo, student, patient, etc.). REX is a digital substitute for expensive flashcards that cost hundreds of dollars. Not to mention, you will eliminate hours of time-consuming materials preparation. For example, you can select a visual category (e.g. - actions, animals, colors, common items, community helpers, food, furniture, numbers, etc.) and easily customize your visual collection from one up to twelve subjects. There is a built in shuffle button designed to randomly scramble your custom visual collection testing your client's ability to track and follow. For Receptive Identification, REX will challenge your client to visually identify the subject you verbally call out. For Expressive Identification, REX will challenge your client to verbally identify the subject you visually call out. You can adjust your collection and/or switch categories anytime. Then shuffle and repeat as many iterations is you like. ## Key features - Customizable visual collections - Receptive identification mode - Expressive identification mode - Shuffle button for random testing - Multiple subject categories - Digital substitute for flashcards ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/rex-receptive-expressive-id/id1635884119/reviews.md ### 3/5 — Adding custom pics & categories *2024-10-24* I wish I could add my own pics & categories. The shuffling feature is cool! ### 5/5 — Love this! *2022-10-03* The pics are amazing and it is so simple to use. There’s an awesome shuffle feature. I own an ABA agency and I have all my staff use it! ### 1/5 — To expensive to be so limited *2022-09-30* The idea of this app is cool, but it doesn’t provide the options to select what image you want to use/focus on and it doesn’t provide different variations of each targeted image. It would be cheaper for me just to make my only stimuli and recycle them with each client. **Developer response:** Thanks for your review as we are always looking for new ways to improve this app. Our Development Team is interested in learning more about your use case around image use/focus/variations. Could you please contact ‘App Support’? ### 2/5 — Only 3 categories *2022-08-22* App is not as advertised, it only came with 3 categories. Very disappointed for having spent money on this. It did shuffle and increase and decrease the pics, but you can’t customize what pics are displayed besides the category. **Developer response:** Thank you for the review and it has been taken into consideration. Version 1.1 has been released with five additional categories. Further customization of pics will be incorporated in a future release. Please contact ‘App Support’ if you would like to provide additional inputs for consideration. ## Frequently asked questions about REX ### What is REX used for? REX is designed to help adults teach children receptive and expressive identification skills using digital flashcards. It offers a customizable and interactive way to practice identifying various subjects. ### How does REX help with learning? REX facilitates learning through two modes: receptive identification, where the user verbally calls out a subject for the child to find, and expressive identification, where the child verbally identifies a visually presented subject. This dual approach supports comprehensive skill development. ### Can I customize the learning content in REX? Yes, REX allows you to easily customize your visual collection from one up to twelve subjects within various categories like actions, animals, colors, and food. You can adjust your collection or switch categories anytime. ### How much does REX cost? REX is a paid application, available for $9.99. This one-time purchase provides access to all its features for teaching and learning. ### What devices is REX compatible with? REX is compatible with iPhone, iPad, and iPod devices. It is designed for use on Apple's mobile operating system. ### How often is REX updated? The latest version of REX is 1.2, which was last updated on March 13, 2023. Updates typically focus on improving functionality and user experience. ### What is the age rating for REX? REX has an age rating of 4+, making it suitable for children aged four and older. The app's content and functionality are designed for this age group. ### Does REX have ads? No, REX does not contain advertisements. As a paid application, it offers an uninterrupted learning experience without any ad interruptions. ## Version history (last 3 releases) ### 1.2 — 2023-03-13 Added new categories: Music Instruments, Outdoor, Toys ### 1.1 — 2022-09-29 Added new categories: Actions, Colors, Common Items, Community Helpers, Numbers ### 1.0 — 2022-08-18 No release notes. ## Apps similar to REX | App | Rating | Price | Category | | --- | --- | --- | --- | | [SpeechBox for Speech Therapy](https://appshunter.io/ios/app/speechbox-for-speech-therapy/id568581305) | 3.9 (244) | Free | Education | | [Purple Bananas: Learn Words](https://appshunter.io/ios/app/purple-bananas-learn-words/id1559208329) | 5.0 (2) | Free | Education | | [VBMAPP](https://appshunter.io/ios/app/vbmapp/id1061298773) | 3.7 (17) | Free | Education | | [Boardmaker 7 Student Center](https://appshunter.io/ios/app/boardmaker-7-student-center/id1462956340) | 3.0 (2) | Free | Education | | [Pictello Visual Stories](https://appshunter.io/ios/app/pictello-visual-stories/id397858008) | 4.1 (33) | $19.99 | Education | | [FirstWork](https://appshunter.io/ios/app/firstwork/id6468642504) | 4.7 (14) | Free | Education | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-30.*