# Thiên Cơ vs Savi

The clearest difference is update cadence: Savi at every 3 weeks against Thiên Cơ's every 2 months. Thiên Cơ's advantage is iOS requirement (11.0 vs 13.4). 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.

Thiên Cơ ships an update every 2 months, Savi every 3 weeks. The most recent releases landed on September 27, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Thiên Cơ | Savi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/savi/id6740526062/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 38 MB | 40 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Vo Trong Nghia](https://appshunter.io/developer/1590419979) | [Akibook](https://appshunter.io/developer/1790407217) |

## What reviewers say

### Thiên Cơ

[App page](https://appshunter.io/ios/app/thien-co/id1590419977)

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

**In-app purchases:** none


### Savi

[App page](https://appshunter.io/ios/app/savi/id6740526062)

Read books and news on your ebook devices. Access a variety of content directly on your preferred e-reader.

**Highlights:** Read books, Read news, Supports ebook devices, Access diverse content

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

**In-app purchases:** none


## Frequently asked questions

### Is Thiên Cơ free?

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

### Is Savi free?

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

### Do Thiên Cơ or Savi have ads?

Neither Thiên Cơ nor Savi shows ads.

### Which is updated more often, Thiên Cơ or Savi?

Thiên Cơ ships an update every 2 months, and Savi every 3 weeks. Most recently, Thiên Cơ was updated on September 27, 2026 and Savi on October 9, 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.*