# Klepsydra vs ReadStreak

The clearest difference is in-app purchases: Klepsydra at none against ReadStreak's 11. ReadStreak's advantage is update cadence (every 9 days vs every 28 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ReadStreak sells 9 in-app purchases, starting at $2.99 per month. Klepsydra asks for nothing beyond the download.

Klepsydra ships an update every 28 months, ReadStreak every 9 days. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Klepsydra | ReadStreak |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/readstreak/id6475358446/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 251 MB | 48 MB |
| Requires iOS | 15.0 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Cyril de Nanteuil](https://appshunter.io/developer/1608224678) | [ReadStreak Inc](https://appshunter.io/developer/1724049650) |

## What reviewers say

### Klepsydra

[App page](https://appshunter.io/ios/app/klepsydra/id1608224676)

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

**In-app purchases:** none


### ReadStreak

[App page](https://appshunter.io/ios/app/readstreak/id6475358446)

This app provides a vibrant and engaging ebook library for children, featuring hundreds of stories in multiple languages. It aims to enhance language skills and cultural understanding through interactive elements and native speaker narrations in a safe, ad-free environment.

**Highlights:** Vast multilingual ebook library, Interactive stories with narration, Language learning and cultural understanding, Customizable reading levels, Safe and ad-free environment, Regular content updates

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Library Access | $2.99 | per month |
| Full Library Access | $3.99 | per month |
| Full Library Access | $4.99 | per month |
| Full Library Access | $29.99 | per year |
| Full Library Access | $39.99 | per year |
| Full Library Access | $49.99 | per year |
| Full Library Access | $1.99 | one-time |
| Full Library Access | $4.99 | one-time |
| Full Library Access | $9.99 | one-time |


## Frequently asked questions

### Is Klepsydra free?

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

### Is ReadStreak free?

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

### Do Klepsydra or ReadStreak have ads?

Neither Klepsydra nor ReadStreak shows ads.

### Which is updated more often, Klepsydra or ReadStreak?

Klepsydra ships an update every 28 months, and ReadStreak every 9 days. Most recently, Klepsydra was updated on October 27, 2026 and ReadStreak on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*