# Ludwig's Math Lite vs Hidden Numbers

The clearest difference is in-app purchases: Ludwig's Math Lite at none against Hidden Numbers's 10. Ludwig's Math Lite also leads on ads (none vs shown) and update cadence (every 3 months vs every 81 months). On price and device support there is nothing between them.

Both are free to download. Hidden Numbers sells 10 one-off in-app purchases. Ludwig's Math Lite asks for nothing beyond the download.

Ludwig's Math Lite ships an update every 3 months, Hidden Numbers every 81 months. The most recent releases landed on October 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Ludwig's Math Lite | Hidden Numbers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/hidden-numbers-hidden-objects/id1227396653/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 81 months |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 20 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AVIA](https://appshunter.io/developer/390606207) | [Hiren Patel](https://appshunter.io/developer/914022084) |

## What reviewers say

### Ludwig's Math Lite

[App page](https://appshunter.io/ios/app/ludwigs-math-lite/id732763113)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Numbers

[App page](https://appshunter.io/ios/app/hidden-numbers-hidden-objects/id1227396653)

Engage in a visual challenge to find hidden numbers within beautiful scenes. Test your observation skills by spotting differences and racing against the clock. Unlock new packs and levels with in-app purchases.

**Highlights:** Find 10 hidden numbers, Spot differences in pictures, 30 beautiful background scenes, Use hints for assistance, Challenge other players, Share scores on social media

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buy pack-1 | $0.99 | one-time |
| buy pack-2 | $0.99 | one-time |
| buy pack-3 | $0.99 | one-time |
| buy 10 hints | $0.99 | one-time |
| remove Ads | $1.99 | one-time |
| buy 30 hints | $1.99 | one-time |
| buy 50 hints | $2.99 | one-time |
| Full Version (all packs + remove Ads + 300 hints) | $3.99 | one-time |
| buy 100 hints | $3.99 | one-time |
| buy 200 hints | $4.99 | one-time |


## Frequently asked questions

### Is Ludwig's Math Lite free?

Ludwig's Math Lite is free to download, with no in-app purchases.

### Is Hidden Numbers free?

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

### Do Ludwig's Math Lite or Hidden Numbers have ads?

Hidden Numbers shows ads; Ludwig's Math Lite does not.

### Which is updated more often, Ludwig's Math Lite or Hidden Numbers?

Ludwig's Math Lite ships an update every 3 months, and Hidden Numbers every 81 months. Most recently, Ludwig's Math Lite was updated on October 8, 2026 and Hidden Numbers on September 22, 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.*