# SecureSack vs Serious Notebook

The clearest difference is in-app purchases: SecureSack at none against Serious Notebook's 1. SecureSack also leads on update cadence (weekly vs every 2 weeks) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Serious Notebook sells 1 one-off in-app purchase. SecureSack asks for nothing beyond the download.

SecureSack ships an update weekly, Serious Notebook every 2 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SecureSack | Serious Notebook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 33 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SecureSack LLC](https://appshunter.io/developer/1830119169) | [BILGESU KADAN](https://appshunter.io/developer/1896346142) |

## What reviewers say

### SecureSack

[App page](https://appshunter.io/ios/app/securesack/id649693270)

**Features:** macOS Compatibility

**In-app purchases:** none


### Serious Notebook

[App page](https://appshunter.io/ios/app/serious-notebook/id6769515671)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $9.99 | one-time |


## Frequently asked questions

### Is SecureSack free?

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

### Is Serious Notebook free?

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

### Do SecureSack or Serious Notebook have ads?

Neither SecureSack nor Serious Notebook shows ads.

### Which is updated more often, SecureSack or Serious Notebook?

SecureSack ships an update weekly, and Serious Notebook every 2 weeks. Most recently, SecureSack was updated on October 3, 2026 and Serious Notebook on October 8, 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.*