# Marshall Memory vs Proof Fidget

Marshall Memory and Proof Fidget are too close to call on the numbers: across 9 compared parameters — price, rating, review sentiment and ratings volume among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Marshall Memory against 5.0 for Proof Fidget. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

## The numbers

| Metric | Marshall Memory | Proof Fidget |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/marshall-memory/id6738463676/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/proof-fidget/id6759361942/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | Free |
| Size | 77 MB | 10 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Aymont](https://appshunter.io/developer/1835144949) | [Matthew Murphy](https://appshunter.io/developer/1263295014) |

## What reviewers say

### Marshall Memory

[App page](https://appshunter.io/ios/app/marshall-memory/id6738463676)

This app aids long-term memory retention using spaced repetition and retrieval techniques. It sends timely reminders via notifications or email for various types of information, from quotes to vocabulary.

**Highlights:** Spaced review technique, Retrieval practice, Customizable reminders, Notification alerts, Email prompts, Image input

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

**In-app purchases:** none


### Proof Fidget

[App page](https://appshunter.io/ios/app/proof-fidget/id6759361942)

Engage with math through interactive puzzles that build proofs step-by-step. Learn logic, algebra, number theory, and geometry by making correct moves and receiving immediate feedback. Develop intuition for abstract concepts in short, satisfying sessions.

**Highlights:** Puzzle-driven math learning, Step-by-step proof building, Logic and proof techniques, Algebraic transformations, Number theory practice, Geometry and visual aids

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Marshall Memory free?

Marshall Memory is free to download, with no in-app purchases.

### Is Proof Fidget free?

Proof Fidget is free to download, with no in-app purchases.

### Which has better reviews, Marshall Memory or Proof Fidget?

Marshall Memory and Proof Fidget are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Marshall Memory or Proof Fidget have ads?

Neither Marshall Memory nor Proof Fidget shows ads.

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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.*