# Kairos Mobile vs Litup

The clearest difference is in-app purchases: Kairos Mobile at none against Litup's 4. Litup's advantage is update cadence (every 6 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Litup sells 4 in-app purchases, starting at $3.99 per month. Kairos Mobile asks for nothing beyond the download.

Kairos Mobile ships an update monthly, Litup every 6 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Kairos Mobile | Litup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/litup-readchallenge/id6760472746/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 48 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sensoft](https://appshunter.io/developer/1606965807) | [KHADIM GUEYE](https://appshunter.io/developer/1884613656) |

## What reviewers say

### Kairos Mobile

[App page](https://appshunter.io/ios/app/kairos-mobile/id1663835292)

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

**In-app purchases:** none


### Litup

[App page](https://appshunter.io/ios/app/litup-readchallenge/id6760472746)

This app transforms solitary reading into a collective, gamified experience. Users join reading challenges with daily page goals, read within an integrated PDF reader, and earn points through quizzes to climb real-time leaderboards. Streaks, badges, and recognition foster lasting engagement.

**Highlights:** Gamified reading challenges, Integrated PDF reader, Daily quizzes for points, Real-time leaderboards, Streaks and badges, Community reading experience

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LITUP Premium | $3.99 | per month |
| Accès Challenge | $0.99 | one-time |
| Slot de création | $0.99 | one-time |
| Accès Challenge Premium | $1.99 | one-time |


## Frequently asked questions

### Is Kairos Mobile free?

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

### Is Litup free?

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

### Do Kairos Mobile or Litup have ads?

Neither Kairos Mobile nor Litup shows ads.

### Which is updated more often, Kairos Mobile or Litup?

Kairos Mobile ships an update monthly, and Litup every 6 days. Most recently, Kairos Mobile was updated on November 3, 2026 and Litup on October 31, 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.*