# optistore.net vs BlackBook

The clearest difference is in-app purchases: optistore.net at none against BlackBook's 2. optistore.net also leads on iOS requirement (11.0 vs 15.0). BlackBook's advantage is update cadence (every 5 days vs every 46 months). On price, ads and device support there is nothing between them.

Both are free to download. BlackBook sells 2 in-app purchases, starting at $4.99 per month. optistore.net asks for nothing beyond the download.

optistore.net ships an update every 46 months, BlackBook every 5 days. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | optistore.net | BlackBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/optistorenet/id908684008/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 11 MB | 16 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Optistore.net Ltd](https://appshunter.io/developer/908684011) | [KYLE AUSTIN PRIESS](https://appshunter.io/developer/6784800323) |

## What reviewers say

### optistore.net

[App page](https://appshunter.io/ios/app/optistorenet/id908684008)

Discover and purchase sunglasses at significantly lower prices than traditional retail. Browse thousands of models, compare prices instantly, and make secure online purchases.

**Highlights:** Browse thousands of sunglass models, Compare prices with market rates, Secure online purchasing, Significant price discounts (30-50%), No unusual permissions required, No user data collection

**Features:** macOS Compatibility

**In-app purchases:** none


### BlackBook

[App page](https://appshunter.io/ios/app/blackbook-dating-journal/id6784800321)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BlackBook Pro | $4.99 | per month |
| BlackBook Pro | $39.99 | per year |


## Frequently asked questions

### Is optistore.net free?

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

### Is BlackBook free?

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

### Do optistore.net or BlackBook have ads?

Neither optistore.net nor BlackBook shows ads.

### Which is updated more often, optistore.net or BlackBook?

optistore.net ships an update every 46 months, and BlackBook every 5 days. Most recently, optistore.net was updated on November 1, 2026 and BlackBook on October 28, 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.*