# Stackbox vs Mnemosa

The clearest difference is device support: Stackbox at 3 against Mnemosa's 1. Mnemosa's advantage is iOS requirement (16.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Stackbox sells 2 in-app purchases, starting at $1.99 per month and Mnemosa sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stackbox | Mnemosa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 33 MB | 57 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YunJae Jeong](https://appshunter.io/developer/1568287924) | [Muhamed Sufail](https://appshunter.io/developer/1859292275) |

## What reviewers say

### Stackbox

[App page](https://appshunter.io/ios/app/stackbox-rss-reader/id6758572761)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Yearly Plan | $19.99 | per year |


### Mnemosa

[App page](https://appshunter.io/ios/app/mnemosa/id6759486757)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mnemosa Lifetime Pro | $12.99 | one-time |


## Frequently asked questions

### Is Stackbox free?

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

### Is Mnemosa free?

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

### Do Stackbox or Mnemosa have ads?

Neither Stackbox nor Mnemosa shows ads.

### Which is updated more often, Stackbox or Mnemosa?

Stackbox ships an update every 4 days, and Mnemosa every 4 days. Most recently, Stackbox was updated on October 10, 2026 and Mnemosa 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.*