# Bitu Mod vs Quail Reader

The clearest difference is in-app purchases: Bitu Mod at none against Quail Reader's 3. Quail Reader's advantage is update cadence (weekly vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Quail Reader sells 3 in-app purchases, starting at $8.99 per month. Bitu Mod asks for nothing beyond the download.

Bitu Mod ships an update every 4 weeks, Quail Reader weekly. The most recent releases landed on September 20, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Bitu Mod | Quail Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quail-reader/id6751991221/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | — | Freemium |
| Size | 108 MB | 76 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BITU VIET NAM COMPANY LIMITED](https://appshunter.io/developer/1551918174) | [Andrew Yong](https://appshunter.io/developer/1837807848) |

## What reviewers say

### Bitu Mod

[App page](https://appshunter.io/ios/app/bitu-mod/id1551918172)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quail Reader

[App page](https://appshunter.io/ios/app/quail-reader/id6751991221)

Enhance learning retention with a memory-optimized reader. Import articles, EPUBs, and text into a distraction-free environment. Utilize spaced repetition and incremental reading to transform information into lasting knowledge.

**Highlights:** Memory-optimized reading, Spaced repetition, Distraction-free environment, Incremental reading, Content import (articles, EPUBs, text), Knowledge modules, Useful annotations

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quail Monthly | $8.99 | per month |
| Quail Annual | $69.99 | per year |
| Quail Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is Bitu Mod free?

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

### Is Quail Reader free?

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

### Do Bitu Mod or Quail Reader have ads?

Neither Bitu Mod nor Quail Reader shows ads.

### Which is updated more often, Bitu Mod or Quail Reader?

Bitu Mod ships an update every 4 weeks, and Quail Reader weekly. Most recently, Bitu Mod was updated on September 20, 2026 and Quail Reader on June 2, 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.*