# Smile Tech Library vs Private Notes.

The clearest difference is ads: Smile Tech Library at none against Private Notes.'s shown. Smile Tech Library also leads on update cadence (every 9 days vs every 2 months). Private Notes.'s advantage is iOS requirement (12.0 vs 15.0). On price, in-app purchases, monetization model 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.

Smile Tech Library ships an update every 9 days, Private Notes. every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Smile Tech Library | Private Notes. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/smile-tech-library/id1534607909/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | — | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 25 MB | 16 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Helping Others Smile](https://appshunter.io/developer/1534607911) | [WALABOK LLC](https://appshunter.io/developer/913827467) |

## What reviewers say

### Smile Tech Library

[App page](https://appshunter.io/ios/app/smile-tech-library/id1534607909)

Access video tutorials and instructional manuals for your Apple devices. Get direct access to ask questions and contact the support team.

**Highlights:** Video tutorials, Instructional manuals, Interactive learning, Direct Q&A, Contact support

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

**In-app purchases:** none


### Private Notes.

[App page](https://appshunter.io/ios/app/private-notes/id1539765495)

Securely store your personal thoughts, ideas, and text with a passcode or biometric authentication. This app offers intuitive text editing tools and a straightforward interface for organizing timestamped notes.

**Highlights:** Biometric and passcode security, Intuitive copy/paste/cut, Text formatting (underline, bold, italic), Timestamped notes, Straightforward user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Smile Tech Library free?

Smile Tech Library is free to download, with no in-app purchases.

### Is Private Notes. free?

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

### Do Smile Tech Library or Private Notes. have ads?

Private Notes. shows ads; Smile Tech Library does not.

### Which is updated more often, Smile Tech Library or Private Notes.?

Smile Tech Library ships an update every 9 days, and Private Notes. every 2 months. Most recently, Smile Tech Library was updated on November 3, 2026 and Private Notes. on November 3, 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.*