# Sinjalizo vs Probash Book

The clearest difference is ads: Sinjalizo at none against Probash Book's shown. Probash Book's advantage is update cadence (every 2 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sinjalizo ships an update every 3 months, Probash Book every 2 weeks. Both last shipped on November 12, 2026.

## The numbers

| Metric | Sinjalizo | Probash Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 25 MB | 63 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SIGMA TECHNOLOGY SEE L.L.C.](https://appshunter.io/developer/1108478199) | [Estiak Hossain](https://appshunter.io/developer/1792631324) |

## What reviewers say

### Sinjalizo

[App page](https://appshunter.io/ios/app/sinjalizo/id6738784668)

**Features:** macOS Compatibility

**In-app purchases:** none


### Probash Book

[App page](https://appshunter.io/ios/app/probash-book/id6741025199)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sinjalizo free?

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

### Is Probash Book free?

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

### Do Sinjalizo or Probash Book have ads?

Probash Book shows ads; Sinjalizo does not.

### Which is updated more often, Sinjalizo or Probash Book?

Sinjalizo ships an update every 3 months, and Probash Book every 2 weeks. Most recently, Sinjalizo was updated on November 12, 2026 and Probash Book on November 12, 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.*