# FillBoard vs NumChain

The clearest difference is in-app purchases: FillBoard at none against NumChain's 5. FillBoard also leads on iOS requirement (14.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NumChain sells 5 one-off in-app purchases. FillBoard asks for nothing beyond the download.

FillBoard ships an update every 2 months, NumChain monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FillBoard | NumChain |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 14 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerome de Cock](https://appshunter.io/developer/1606364543) | [J.Benito Pereira](https://appshunter.io/developer/1267263346) |

## What reviewers say

### FillBoard

[App page](https://appshunter.io/ios/app/fillboard/id1609657402)

**Features:** macOS Compatibility

**In-app purchases:** none


### NumChain

[App page](https://appshunter.io/ios/app/numchain-math-number-puzzle/id6670266485)

This number puzzle game sharpens mental math skills through engaging gameplay. Connect numbers to form chains, sums, and products across three distinct modes. Compete globally, earn achievements, and enjoy a clean, intuitive interface designed for all ages.

**Highlights:** Three game modes: Chains, Sums, Multiplication, Global leaderboards and achievements, Hint system for challenging puzzles, Intuitive interface and clean design, Optimized for iPhone and iPad, Develops mental calculation and strategic thinking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 Points | $0.99 | one-time |
| 53 Points | $1.99 | one-time |
| Ads Remove | $2.99 | one-time |
| 85 Points | $2.99 | one-time |
| 110 Points | $3.99 | one-time |


## Frequently asked questions

### Is FillBoard free?

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

### Is NumChain free?

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

### Do FillBoard or NumChain have ads?

Both FillBoard and NumChain show ads.

### Which is updated more often, FillBoard or NumChain?

FillBoard ships an update every 2 months, and NumChain monthly. Most recently, FillBoard was updated on November 3, 2026 and NumChain on October 30, 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.*