# Pendulum Digital vs Chess Combinations

The clearest difference is in-app purchases: Pendulum Digital at none against Chess Combinations's 23. Chess Combinations's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Chess Combinations sells 23 one-off in-app purchases. Pendulum Digital asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Pendulum Digital | Chess Combinations |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/pendulum-digital/id6475202766/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free | — |
| Size | 38 MB | 40 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Pendulum Digital](https://appshunter.io/developer/1716317965) | [Maksim Kolosov](https://appshunter.io/developer/1570015397) |

## What reviewers say

### Pendulum Digital

[App page](https://appshunter.io/ios/app/pendulum-digital/id6475202766)

This app aims to enhance early childhood education by digitally connecting educators and parents. It promotes efficient learning processes and encourages active parental involvement in a child's development and progress.

**Highlights:** Blended learning solution, Digital tools for early childhood education, Parental involvement in learning, Progress tracking for children, Digital school operations, Hands-on learning materials

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

**In-app purchases:** none


### Chess Combinations

[App page](https://appshunter.io/ios/app/chess-combinations/id6504554035)

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knight forks | $1.99 | one-time |
| Sacrifice on e6 | $3.99 | one-time |
| Scandinavian Defense (white) | $4.99 | one-time |
| Italian Opening, black pieces | $4.99 | one-time |
| Queen Sacrifice | $4.99 | one-time |
| Caro-Kann (white pieces) | $4.99 | one-time |
| Sicilian Defense (Dragon) | $5.99 | one-time |
| Sicilian Defense (Najdorf) | $5.99 | one-time |
| Italian Opening, white pieces | $5.99 | one-time |
| Scandinavian Defense | $5.99 | one-time |
| Classic Caro-Kann | $5.99 | one-time |
| Sicilian Defense (Paulsen) | $5.99 | one-time |
| Sicilian Defense, white pieces | $5.99 | one-time |
| Scottish Gambit | $5.99 | one-time |
| Budapest Gambit | $6.99 | one-time |
| Grob's Attack | $6.99 | one-time |
| Slav Defense | $6.99 | one-time |
| Ruy Lopez Opening | $6.99 | one-time |
| London System | $6.99 | one-time |
| King's Indian defense | $6.99 | one-time |
| Queen's Gambit, black pieces | $6.99 | one-time |
| Catalan Opening | $7.99 | one-time |
| King's Gambit | $8.99 | one-time |


## Frequently asked questions

### Is Pendulum Digital free?

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

### Is Chess Combinations free?

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

### Do Pendulum Digital or Chess Combinations have ads?

Neither Pendulum Digital nor Chess Combinations shows ads.

### Which is updated more often, Pendulum Digital or Chess Combinations?

Pendulum Digital ships an update every 2 weeks, and Chess Combinations every 2 weeks. Most recently, Pendulum Digital was updated on October 10, 2026 and Chess Combinations on October 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.*