# Zhizhi vs DayWorld 一念世界

The clearest difference is in-app purchases: Zhizhi at none against DayWorld 一念世界's 1. Zhizhi also leads on device support (4 vs 2) and iOS requirement (12.0 vs 15.0). On price and ads there is nothing between them.

Both are free to download. DayWorld 一念世界 sells 1 in-app purchase, starting at $14.99 per year. Zhizhi asks for nothing beyond the download.

## The numbers

| Metric | Zhizhi | DayWorld 一念世界 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zhizhi/id6740143014/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Free | — |
| Size | 38 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CoreSpeed Inc.](https://appshunter.io/developer/1717281942) | [浩 赵](https://appshunter.io/developer/6790351177) |

## What reviewers say

### Zhizhi

[App page](https://appshunter.io/ios/app/zhizhi/id6740143014)

This app uses AI to provide instant, one-minute podcast-style explanations of academic terms and content on each page of your documents. It acts like a personal tutor, making complex papers and lectures more accessible.

**Highlights:** AI-powered explanations, One-minute summaries per page, Academic term clarification, Document content analysis, Personalized tutor experience

**In-app purchases:** none


### DayWorld 一念世界

[App page](https://appshunter.io/ios/app/dayworld/id6801054754)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Day Keeper | $14.99 | per year |


## Frequently asked questions

### Is Zhizhi free?

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

### Is DayWorld 一念世界 free?

DayWorld 一念世界 is free to download, with in-app purchases available.

### Do Zhizhi or DayWorld 一念世界 have ads?

Neither Zhizhi nor DayWorld 一念世界 shows ads.

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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.*