# 第三之书 vs TF输入法

The clearest difference is review sentiment: 第三之书 at 100% against TF输入法's 67%. TF输入法's advantage is update cadence (every 2 weeks vs monthly). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 第三之书 sells 10 one-off in-app purchases and TF输入法 sells 9 in-app purchases, starting at $0.49 per 7 days. Whichever you choose, the download price is not the number that matters.

第三之书 ships an update monthly, TF输入法 every 2 weeks. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 第三之书 | TF输入法 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/id1487049886/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 146 MB | 180 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [志强 余](https://appshunter.io/developer/1317516444) | [小拓 林](https://appshunter.io/developer/1267985198) |

## What reviewers say

### 第三之书

[App page](https://appshunter.io/ios/app/id1487049886)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月卡 | $4.99 | one-time |
| 修真礼包 | $4.99 | one-time |
| 珍珠丸礼包 | $7.99 | one-time |
| 能量石礼包 | $7.99 | one-time |
| 终身卡 | $14.99 | one-time |
| 钻石礼包 | $14.99 | one-time |
| 解锁高级犒赏 | $25.99 | one-time |
| 心愿稀有传说伙伴礼包 | $25.99 | one-time |
| 328元礼包 | $49.99 | one-time |
| 一队稀有传说伙伴礼包 | $99.99 | one-time |


### TF输入法

[App page](https://appshunter.io/ios/app/tf/id1537722262)

Enhance your social chats and gaming with a smart keyboard that offers quick access to classic lines, witty replies, and game commands. Supports Cantonese input and provides high-EQ responses for various scenarios.

**Highlights:** Quick access to classic lines and sentences, Customizable commands for gaming, Cantonese input with pronunciation guides, High-EQ responses for social scenarios, Multiple chat scene simulations

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $0.49 | per 7 days |
| tf月会员 | $0.99 | per month |
| TF月会员 | $0.99 | per month |
| 季会员 | $2.99 | per 3 months |
| tf年会员 | $7.49 | per year |
| TF年会员 | $8.99 | per year |
| vip-1个月 | $0.99 | one-time |
| vip-3个月 | $1.99 | one-time |
| vip-12个月 | $7.99 | one-time |


## Frequently asked questions

### Is 第三之书 free?

第三之书 is free to download, with in-app purchases available.

### Is TF输入法 free?

TF输入法 is free to download, with in-app purchases available.

### Do 第三之书 or TF输入法 have ads?

Both 第三之书 and TF输入法 show ads.

### Which is updated more often, 第三之书 or TF输入法?

第三之书 ships an update monthly, and TF输入法 every 2 weeks. Most recently, 第三之书 was updated on October 29, 2026 and TF输入法 on November 3, 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.*