# iStudy Learning Center vs Preface.ai

The clearest difference is update cadence: Preface.ai at every 3 weeks against iStudy Learning Center's every 3 months. 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.

iStudy Learning Center ships an update every 3 months, Preface.ai every 3 weeks. The most recent releases landed on October 22, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | iStudy Learning Center | Preface.ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 12 MB | 64 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dreamware Limited](https://appshunter.io/developer/892413586) | [Preface Coding](https://appshunter.io/developer/1567531648) |

## What reviewers say

### iStudy Learning Center

[App page](https://appshunter.io/ios/app/istudy-learning-center/id1579619902)

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

**In-app purchases:** none


### Preface.ai

[App page](https://appshunter.io/ios/app/prefaceai/id6541761017)

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

**In-app purchases:** none


## Frequently asked questions

### Is iStudy Learning Center free?

iStudy Learning Center is free to download, with no in-app purchases.

### Is Preface.ai free?

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

### Do iStudy Learning Center or Preface.ai have ads?

Neither iStudy Learning Center nor Preface.ai shows ads.

### Which is updated more often, iStudy Learning Center or Preface.ai?

iStudy Learning Center ships an update every 3 months, and Preface.ai every 3 weeks. Most recently, iStudy Learning Center was updated on October 22, 2026 and Preface.ai 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.*