# Thai Reader vs LetterSprig

The clearest difference is update cadence: LetterSprig at every 3 days against Thai Reader's every 8 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Thai Reader sells 1 one-off in-app purchase and LetterSprig sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Thai Reader ships an update every 8 days, LetterSprig every 3 days. The most recent releases landed on November 10, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Thai Reader | LetterSprig |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Size | 104 MB | 52 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thanh My DUONG](https://appshunter.io/developer/1882647935) | [Romulo Carvalho](https://appshunter.io/developer/1896339491) |

## What reviewers say

### Thai Reader

[App page](https://appshunter.io/ios/app/thai-reader-read-thai/id6780390542)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $3.99 | one-time |


### LetterSprig

[App page](https://appshunter.io/ios/app/lettersprig-write-beautifully/id6817156895)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LetterSprig Plus (Monthly) | $3.99 | per month |
| LetterSprig Plus (Annual) | $19.99 | per year |
| 50 Letter Checks | $2.99 | one-time |
| 150 Letter Checks | $6.99 | one-time |
| Plus Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Thai Reader free?

Thai Reader is free to download, with in-app purchases available.

### Is LetterSprig free?

LetterSprig is free to download, with in-app purchases available.

### Do Thai Reader or LetterSprig have ads?

Neither Thai Reader nor LetterSprig shows ads.

### Which is updated more often, Thai Reader or LetterSprig?

Thai Reader ships an update every 8 days, and LetterSprig every 3 days. Most recently, Thai Reader was updated on November 10, 2026 and LetterSprig on October 29, 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.*