Instrukt vs World Retina
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Instrukt
Streamline the process of finding substitute instructors for classes. This app ensures that only approved instructors are notified, allowing them to accept with a single tap and automatically updating your scheduling software.
- Instant sub requests to approved instructors
- One-tap acceptance for instructors
- Automatic Mindbody updates
- Instructor approval rules
- Real-time request status
- Automated reminders
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The typical sub request process costs your whole team: your time, your managers' hours, and your instructors' willingness to step in. Instrukt replaces it. It's the fastest way to get your classes covered, by your own instructors. With none of the chaos. At most studios, every sub request kicks off the same routine. A message goes out to the group. Replies pile up. You read through all of them to figure out who's available and whether the class is still open, answer the instructors who replied after it was already covered, then go update Mindbody yourself. Multiply that by every sub, every week. And when a request lands while you're helping a client, teaching a class, or at your kid's game, it's easy to miss it or forget the Mindbody update entirely. Sound familiar? Instrukt ends all of that. Sub requests go straight to the instructors you've approved for that class. They say yes with one tap. Mindbody updates automatically. And you always know where every sub stands, without reading a single thread. GET CLASSES COVERED FAST • Sub requests go instantly to only the instructors you've approved to sub that class • Last-minute requests go out right away to every instructor you've approved for that class EASY FOR INSTRUCTORS, SO CLASSES GET COVERED FASTER • When picking up a class is this easy, more of your instructors say yes, and classes get covered faster • No digging through messages: instructors only hear about classes you've approved them to sub • Accepting takes one tap, even when they're busy and can't stop to check their schedule and reply • Calendar sync puts their teaching and subbing schedule in their phone's calendar, so schedule conflicts are less likely NO MORE MESSAGE TRIAGE • No group texts or email threads to read through, sort out, and follow up on • No more answering replies about classes that were covered hours ago • No updating Mindbody by hand after every sub • Nothing missed while you're teaching, helping a client, or away from your phone NO MANUAL MINDBODY UPDATES • Instrukt is always in sync with your Mindbody schedule • Every confirmed sub is written to Mindbody automatically • No errors, no missed updates, no wasted time YOUR INSTRUCTORS. YOUR RULES. • You decide which of your instructors are approved to sub each type of class, at each location • Set it once, and every sub request follows your rules automatically • Easy to update anytime as your team grows and your studio evolves ALWAYS KNOW WHERE THINGS STAND • See which classes need a sub and which are covered, at a glance • See which instructors have been notified on every open request • Get notified when a sub is requested, covered, or canceled, so nothing slips by while you're busy NOBODY HAS TO CHASE • Automatic reminders ensure classes get covered • Subs get a reminder before class, so no one forgets ALL THE DATA, NONE OF THE TRACKING • Sub reports show every sub, past and upcoming, with no spreadsheet or tracking doc to manually maintain • Filter by date range, instructor, or class, then download or share • A weekly summary email recaps your studio's sub activity NEW IN 2.0 • A redesigned app with clearer sub status and easier calendar navigation • Stay logged in to multiple studio accounts and switch between them in a tap • A faster, smoother experience throughout Less time on subs. More time for your studio. Instrukt works with studios that schedule classes in Mindbody. Each Mindbody Site ID needs its own Instrukt studio account; all locations under one Site ID share a single account. Studio owners set up the account and connect it to Mindbody, then invite their managers and instructors. Learn more at instruktapp.com
World Retina
This app transforms visitor smartphones into personalized tour guides for art venues. It offers tools for content management, data analytics, and event promotion to enhance visitor experience and boost revenue.
- Personalized AI tour guide
- Simplified content curation portal
- Interactive and evolving tours
- Visitor data analytics
- Event and promotion tools
- Multilingual and accessible guide
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A unique and innovative AI solution for artists, galleries, and museums of all sizes. Transforming your visitors' smartphones to personal tour guides experienced in your collections, while providing you with lots of tools and dashboards to promote, enhance your business and increase your revenue stream. HIGHLIGHTS: 1- PERSONAL TOUR GUIDE: Our solution powers a unique personal and customizable tour guide for your visitors whether you are a creative artist, a gallery with changing exhibits or a national museum. 2- SIMPLIFIED CURATION No setup or hardware installation required, self-service, easy to use and user-friendly portal and mobile application for content cataloging and curation. 3- INTERACTIVE TOUR Our powerful cognitive system use curation, Generative AI, visitors' usage and many more inputs to provide interactive and always evolving tour. 4- DATA ANALYTICS Unlock the power of data science to gain insights into your audience. Our tool provides a clear understanding of visitor behavior and collection trends, empowering you to enhance your business and revenue streams effortlessly. 5- EVENTS AND PROMOTIONS Elevate your visitor experience and increase your revenue by offering personalized, AI-driven recommendations, promote your events, and seamlessly integrate your gift shop in the tour by the guide for a truly interactive journey. 6- MULTILINGUAL & ACCESSIBLE Meet more of your visitor needs with our tour guide app. Our tour guide is multilingual and equipped to cater to a wide range of visitor needs, from language preferences to various accessibility requirements.
Screenshots
Verdict
The clearest difference is rating: World Retina at 5.0 against Instrukt's 4.2. World Retina also leads on iOS requirement (13.0 vs 16.4). Instrukt's advantage is ratings volume (20 vs 2). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
World Retina holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Instrukt has 20 ratings behind it against 2, so its average is the more settled of the two.
Instrukt ships an update every 6 weeks, World Retina monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Instrukt | World Retina |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (20 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 90.9% of reviews | — |
| Number of ratings | 20 — better | 2 |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 76 MB |
| Age rating | 4+ | 17+ |
| Developer | Oscar App Labs | World Retina LLC |
Customer experience
Instrukt
World Retina
In-app purchases
Instrukt
No in-app purchases
World Retina
No in-app purchases









