# $MASTR vs RandyAI

The clearest difference is monetization model: $MASTR at free against RandyAI's freemium. RandyAI's advantage is update cadence (every 2 months vs every 8 months) and iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. $MASTR sells 3 in-app purchases, starting at $59.99 per month and RandyAI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

$MASTR ships an update every 8 months, RandyAI every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | $MASTR | RandyAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (7 ratings)](https://appshunter.io/ios/app/randyai/id6752505326/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | **Free** | Freemium |
| Size | 27 MB | 41 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ITEAMCAREER S.R.L.](https://appshunter.io/developer/1810874265) | [RenAIssance Labs, LLC](https://appshunter.io/developer/1839570709) |

## What reviewers say

### $MASTR

[App page](https://appshunter.io/ios/app/mastr/id6745121149)

This app serves as an educational companion for learning about cryptocurrency. It allows users to track their learning progress, collect daily rewards, and scan project information. Account management features are also available.

**Highlights:** Daily reward collection, Token activity reports, Daily project scanning, Notification management, Account deletion

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MASTR Pro Monthly | $59.99 | per month |
| MASTR Pro Quarterly | $149.99 | per 3 months |
| MASTR 1 Inquiry | $4.99 | one-time |


### RandyAI

[App page](https://appshunter.io/ios/app/randyai/id6752505326)

This app helps water and wastewater professionals prepare for certification exams and understand plant operations. It offers state-specific practice questions, an AI-powered study assistant for complex topics, and troubleshooting support for equipment. Learn and retain critical concepts with interactive lessons and quizzes, accessible offline.

**Highlights:** State-specific exam preparation, AI-powered study assistant, Troubleshooting support for plant operations, Interactive lessons and quizzes, Offline mobile learning, Operator-developed content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Randy Pro - Monthly | $4.99 | per month |
| Randy Pro - Yearly | $44.99 | per year |


## Frequently asked questions

### Is $MASTR free?

$MASTR is free to download, with in-app purchases available.

### Is RandyAI free?

RandyAI is free to download, with in-app purchases available.

### Do $MASTR or RandyAI have ads?

Neither $MASTR nor RandyAI shows ads.

### Which is updated more often, $MASTR or RandyAI?

$MASTR ships an update every 8 months, and RandyAI every 2 months. Most recently, $MASTR was updated on October 25, 2026 and RandyAI on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*