# QuicklyMemo vs HighDeF

The clearest difference is ads: HighDeF at none against QuicklyMemo's shown. HighDeF also leads on update cadence (every 3 weeks vs every 5 months) and rating (5.0 vs 4.7). QuicklyMemo's advantage is ratings volume (51 vs 1) and iOS requirement (15.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

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

HighDeF holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: QuicklyMemo has 51 ratings behind it against 1, so its average is the more settled of the two.

QuicklyMemo ships an update every 5 months, HighDeF every 3 weeks. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | QuicklyMemo | HighDeF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (51 ratings)](https://appshunter.io/ios/app/quicklymemo/id611472045/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/highdef/id6781456671/reviews)** |
| Number of ratings | **51** | 1 |
| Positive reviews | 77.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 4 MB | 5 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [EIICHI KOMINE](https://appshunter.io/developer/495643581) | [Twarge LLC](https://appshunter.io/developer/6781456673) |

## What reviewers say

### QuicklyMemo

[App page](https://appshunter.io/ios/app/quicklymemo/id611472045)

This app allows for rapid note-taking and drawing, saving your creations instantly. Share your work via email or social media platforms. Its quick startup and save features ensure immediate usability.

**Highlights:** Instant startup, Quick saving, Email sharing, Twitter sharing, URL scheme support

**Features:** Vision Pro support

**In-app purchases:** none


### HighDeF

[App page](https://appshunter.io/ios/app/highdef/id6781456671)

View HDF5 files on Apple devices. Browse groups and datasets, then display data as tables, plots, or images. Large files open instantly and remain responsive due to efficient loading.

**Highlights:** HDF5 file viewing, Group and dataset browsing, Data visualization (table, plot, image), Instant loading of large files, Responsive performance, Open source

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is QuicklyMemo free?

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

### Is HighDeF free?

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

### Which has better reviews, QuicklyMemo or HighDeF?

HighDeF is rated higher. QuicklyMemo averages 4.7 out of 5 from 51 ratings, while HighDeF averages 5.0 from 1 ratings.

### Do QuicklyMemo or HighDeF have ads?

QuicklyMemo shows ads; HighDeF does not.

### Which is updated more often, QuicklyMemo or HighDeF?

QuicklyMemo ships an update every 5 months, and HighDeF every 3 weeks. Most recently, QuicklyMemo was updated on October 11, 2026 and HighDeF on October 2, 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.*