# RRRemember vs PenX

The clearest difference is update cadence: PenX at every 2 days against RRRemember's every 5 days. PenX also leads on iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. RRRemember sells 4 one-off in-app purchases and PenX sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

RRRemember ships an update every 5 days, PenX every 2 days. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | RRRemember | PenX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 34 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [洪跃 管](https://appshunter.io/developer/1363417345) | [志毅 陈](https://appshunter.io/developer/1529215076) |

## What reviewers say

### RRRemember

[App page](https://appshunter.io/ios/app/rrremember/id6479942350)

Record important days with a simple design and delicate experience. Track past days or days remaining with a simulated paper flipping effect. Decorate entries with theme icons and use widgets for quick access.

**Highlights:** Record important days, Track days passed or remaining, Simulated paper flipping experience, Theme icons for decoration, Widgets and standby components, Timeline function

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Storage | $0.99 | one-time |
| All Themes and Icons | $1.99 | one-time |
| One-time Purchase | $2.99 | one-time |
| All Widget Functions | $2.99 | one-time |


### PenX

[App page](https://appshunter.io/ios/app/penx-structured-notes-app/id6745962671)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO member | $4.99 | per month |
| PRO + AI member | $9.99 | per month |
| PRO member | $39.99 | per year |
| PRO + AI member | $79.99 | per year |


## Frequently asked questions

### Is RRRemember free?

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

### Is PenX free?

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

### Do RRRemember or PenX have ads?

Neither RRRemember nor PenX shows ads.

### Which is updated more often, RRRemember or PenX?

RRRemember ships an update every 5 days, and PenX every 2 days. Most recently, RRRemember was updated on October 5, 2026 and PenX on September 30, 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.*