# Astraware Number Cross vs Einstein Challenge

The clearest difference is price: Astraware Number Cross at Free against Einstein Challenge's $0.99. Astraware Number Cross also leads on update cadence (monthly vs every 39 months) and iOS requirement (15.6 vs 17.0). Einstein Challenge's advantage is in-app purchases (none vs 14). On device support there is nothing between them.

Astraware Number Cross is free to download; Einstein Challenge costs $0.99 up front. Astraware Number Cross sells 14 in-app purchases, starting at $1.99 per month. Einstein Challenge asks for nothing beyond the download.

Astraware Number Cross ships an update monthly, Einstein Challenge every 39 months. The most recent releases landed on October 15, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Astraware Number Cross | Einstein Challenge |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (145 ratings)](https://appshunter.io/ios/app/astraware-number-cross/id592702355/reviews)** | — |
| Number of ratings | **145** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | **Monthly** | Every 39 months |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 9 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 12+ |
| Developer | [Astraware Limited](https://appshunter.io/developer/392328106) | [Joao Silva](https://appshunter.io/developer/1293675690) |

## What reviewers say

### Astraware Number Cross

[App page](https://appshunter.io/ios/app/astraware-number-cross/id592702355)

This logic puzzle game challenges you to fill a grid with numbers based on a provided list. It requires deductive reasoning and problem-solving skills, with daily challenges and a large collection of built-in puzzles.

**Highlights:** Deductive reasoning puzzles, Daily and Weekender challenges, 60 built-in puzzles, Multiple grid sizes and difficulties, Endless puzzle streams, Save slots for multiple puzzles, iOS 14 widget and Siri integration

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Puzzles Plus | $1.99 | per month |
| Puzzles Plus | $2.99 | per 3 months |
| Puzzles Plus | $7.99 | per year |
| Fun-size Pack | $0.99 | one-time |
| Ad-Free daily puzzles | $0.99 | one-time |
| Fun Size Pack 2 | $0.99 | one-time |
| Family Pack | $1.99 | one-time |
| Tough Pack | $1.99 | one-time |
| Easy Pack 2 | $1.99 | one-time |
| Easy Pack | $1.99 | one-time |
| Tough Pack 2 | $1.99 | one-time |
| Vacation Pack | $3.99 | one-time |
| Deluxe Pack | $4.99 | one-time |
| Deluxe Pack 2 | $4.99 | one-time |

**What reviewers like**

- 🧠 Sharpens mind
- 👍 Great game
- 💡 Keeps mind active
- ✋ Helps hand-eye coordination
- 🤩 Fun and brain stimulating

**What reviewers complain about**

- 🐛 Keeps crashing
- 🐛 Crashes upon opening
- 🐛 App won't load
- 🐛 Does not work
- 🐛 Won't open with latest update

**Reported bugs**

- 🐛 Clock doesn't show on completion
- 🐛 App won't open after reinstall
- 🐛 Can't enter numbers into puzzle
- 🐛 Numbers don't always stay where put
- 🐛 Hard levels seem easy

**Requested features**

- 💡 Introduce puzzle replays
- 💡 Add Sunday-to-Saturday calendar of puzzles
- 💡 Replay just finished puzzle
- 💡 Pause button not near numbers
- 💡 Make puzzle squares look like they used to


### Einstein Challenge

[App page](https://appshunter.io/ios/app/einstein-challenge/id1293675691)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astraware Number Cross free?

Astraware Number Cross is free to download, with in-app purchases available.

### Is Einstein Challenge free?

Einstein Challenge costs $0.99, with no in-app purchases.

### Which is updated more often, Astraware Number Cross or Einstein Challenge?

Astraware Number Cross ships an update monthly, and Einstein Challenge every 39 months. Most recently, Astraware Number Cross was updated on October 15, 2026 and Einstein Challenge on May 16, 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.*