# Numby vs Sign Documents

The clearest difference is rating: Sign Documents at 4.9 against Numby's 4.3. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Numby sells 3 in-app purchases, starting at $9.99 per month and Sign Documents sells 7 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sign Documents holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 6 and 17 respectively.

Numby ships an update every 3 weeks, Sign Documents monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Numby | Sign Documents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/numby-ai-math-learning-games/id6744437091/reviews) | **[4.9 (17 ratings)](https://appshunter.io/ios/app/sign-documents-signeo/id6751916710/reviews)** |
| Number of ratings | 6 | **17** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 33 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wellness Technologies](https://appshunter.io/developer/1626239948) | [Anastasiia Tkachenko](https://appshunter.io/developer/1837909202) |

## What reviewers say

### Numby

[App page](https://appshunter.io/ios/app/numby-ai-math-learning-games/id6744437091)

This app uses AI to make learning math fun and accessible for children. It offers engaging exercises and adaptive challenges that adjust to a child's skill level, helping them master basic arithmetic and build a strong foundation for future learning.

**Highlights:** AI-driven adaptive learning, Master addition, subtraction, multiplication, division, Gradual immersion from simple to complex, Progress tracking for children and parents, Engaging tasks and rewards, Simple and pleasant interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month math with the Ai-Helper | $9.99 | per month |
| 3 month Math games + AI-Helper | $19.99 | per 3 months |
| Year Math with the Ai-Helper | $49.99 | per year |


### Sign Documents

[App page](https://appshunter.io/ios/app/sign-documents-signeo/id6751916710)

Streamline document signing and form completion directly from your device. Create custom digital signatures, fill out forms without printing, and securely share signed files. Keep all your important documents organized and accessible.

**Highlights:** Legally binding digital signatures, Custom signature creation, Form filling without printing, Secure document storage, Direct sharing of signed documents

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Digital Signature Maker | $2.99 | per 7 days |
| Digital Signature Maker | $4.99 | per 7 days |
| Digital Signature Maker | $6.99 | per 7 days |
| Digital Signature Maker | $9.99 | per 7 days |
| Digital Signature Maker | $19.99 | per year |
| Digital Signature Maker | $29.99 | per year |
| Digital Signature Maker | $39.99 | per year |


## Frequently asked questions

### Is Numby free?

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

### Is Sign Documents free?

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

### Which has better reviews, Numby or Sign Documents?

Sign Documents is rated higher. Numby averages 4.3 out of 5 from 6 ratings, while Sign Documents averages 4.9 from 17 ratings.

### Do Numby or Sign Documents have ads?

Neither Numby nor Sign Documents shows ads.

### Which is updated more often, Numby or Sign Documents?

Numby ships an update every 3 weeks, and Sign Documents monthly. Most recently, Numby was updated on October 24, 2026 and Sign Documents 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.*