# Number Guess vs Einstein AI

The clearest difference is ads: Einstein AI at none against Number Guess's shown. Number Guess's advantage is update cadence (every 3 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Number Guess sells 8 one-off in-app purchases and Einstein AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Number Guess ships an update every 3 days, Einstein AI fortnightly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Number Guess | Einstein AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (193 ratings)](https://appshunter.io/ios/app/einstein-ai-learn-and-memorize/id6739162816/reviews)** |
| Number of ratings | — | **193** |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 32 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [NovaNext](https://appshunter.io/developer/1285557502) | [Berkay Gemici](https://appshunter.io/developer/1761248495) |

## What reviewers say

### Number Guess

[App page](https://appshunter.io/ios/app/number-guess/id6466263744)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins | $0.99 | one-time |
| Coffee | $0.99 | one-time |
| Remove ads | $0.99 | one-time |
| Donate $3 | $2.99 | one-time |
| Donate $5 | $4.99 | one-time |
| Donate $10 | $9.99 | one-time |
| Donate $15 | $14.99 | one-time |
| Donate $20 | $19.99 | one-time |


### Einstein AI

[App page](https://appshunter.io/ios/app/einstein-ai-learn-and-memorize/id6739162816)

This app uses the Feynman Learning Technique to help you master any subject through voice interaction. Explain concepts aloud, take voice-powered quizzes, and receive detailed performance analysis to identify areas for improvement.

**Highlights:** Voice-powered concept explanation, Dynamically generated voice quizzes, Detailed performance analysis, Subtopic strength identification, Hands-free microphone interaction, Customizable learning topics

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Yearly Pro | $39.99 | per year |


## Frequently asked questions

### Is Number Guess free?

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

### Is Einstein AI free?

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

### Do Number Guess or Einstein AI have ads?

Number Guess shows ads; Einstein AI does not.

### Which is updated more often, Number Guess or Einstein AI?

Number Guess ships an update every 3 days, and Einstein AI fortnightly. Most recently, Number Guess was updated on October 30, 2026 and Einstein AI on October 24, 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.*