# Amazing Marvin vs Grayscale

The clearest difference is price: Amazing Marvin at Free against Grayscale's $1.99. Amazing Marvin also leads on iOS requirement (15.6 vs 17.0). Grayscale's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 2). On update cadence, ads and device support there is nothing between them.

Amazing Marvin is free to download; Grayscale costs $1.99 up front. Amazing Marvin sells 2 in-app purchases, starting at $11.99 per month. Grayscale asks for nothing beyond the download.

Amazing Marvin ships an update monthly, Grayscale fortnightly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Amazing Marvin | Grayscale |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.0 (129 ratings)](https://appshunter.io/ios/app/amazing-marvin-adhd-planner/id1314511546/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 60.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Subscription | **Paid** |
| Size | 123 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Amazing GmbH](https://appshunter.io/developer/1173003383) | [Iliane Zedadra](https://appshunter.io/developer/1571284261) |

## What reviewers say

### Amazing Marvin

[App page](https://appshunter.io/ios/app/amazing-marvin-adhd-planner/id1314511546)

Manage your tasks and projects on the go with this mobile productivity tool. It syncs with the web and desktop versions, offering a comprehensive system for organizing your life. Access your schedule and to-do lists from anywhere.

**Highlights:** Mobile task management, Project organization, Syncs with web/desktop, Subscription-based access, Task scheduling

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $11.99 | per month |
| Amazing Marvin Yearly | $96.00 | per year |


### Grayscale

[App page](https://appshunter.io/ios/app/grayscale-reduce-screen-time/id6760229480)

This app helps you focus by converting websites to black and white within Safari. Reduce visual distractions and make your browsing experience calmer by default. It offers simple, private control through a Safari extension.

**Highlights:** Convert websites to grayscale in Safari, Whitelist domains to keep them in color, One-tap control via Safari extension, Lightweight and private design, Reduces visual noise and stimulation

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Amazing Marvin free?

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

### Is Grayscale free?

Grayscale costs $1.99, with no in-app purchases.

### Do Amazing Marvin or Grayscale have ads?

Neither Amazing Marvin nor Grayscale shows ads.

### Which is updated more often, Amazing Marvin or Grayscale?

Amazing Marvin ships an update monthly, and Grayscale fortnightly. Most recently, Amazing Marvin was updated on November 4, 2026 and Grayscale on November 5, 2026.

---

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