# Infinity Book vs SistroFix

The clearest difference is update cadence: SistroFix at daily against Infinity Book's monthly. Infinity Book's advantage is iOS requirement (14.0 vs 16.4). On price, ads, in-app purchases 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.

Infinity Book ships an update monthly, SistroFix daily. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Infinity Book | SistroFix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 144 MB | 57 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elfinbook SRL](https://appshunter.io/developer/6778315449) | [Kevin Manuel Lorenzo Huise](https://appshunter.io/developer/1893257478) |

## What reviewers say

### Infinity Book

[App page](https://appshunter.io/ios/app/infinity-book/id6529560065)

**In-app purchases:** none


### SistroFix

[App page](https://appshunter.io/ios/app/sistrofix/id6762180498)

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

**In-app purchases:** none


## Frequently asked questions

### Is Infinity Book free?

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

### Is SistroFix free?

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

### Do Infinity Book or SistroFix have ads?

Neither Infinity Book nor SistroFix shows ads.

### Which is updated more often, Infinity Book or SistroFix?

Infinity Book ships an update monthly, and SistroFix daily. Most recently, Infinity Book was updated on October 10, 2026 and SistroFix on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*