# Numerlo vs Chalk Speed Math

The clearest difference is in-app purchases: Chalk Speed Math at none against Numerlo's 2. Numerlo's advantage is iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Numerlo sells 2 in-app purchases, starting at $2.99 per month. Chalk Speed Math asks for nothing beyond the download.

Numerlo ships an update every 3 days, Chalk Speed Math every 5 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Numerlo | Chalk Speed Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 52 MB | 1 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nanxi Li](https://appshunter.io/developer/1869944574) | [Deneisha Tieng](https://appshunter.io/developer/6799564144) |

## What reviewers say

### Numerlo

[App page](https://appshunter.io/ios/app/numerlo-speed-math/id6757960037)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $25.99 | per year |


### Chalk Speed Math

[App page](https://appshunter.io/ios/app/chalk-speed-math/id6799564142)

**In-app purchases:** none


## Frequently asked questions

### Is Numerlo free?

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

### Is Chalk Speed Math free?

Chalk Speed Math is free to download, with no in-app purchases.

### Do Numerlo or Chalk Speed Math have ads?

Neither Numerlo nor Chalk Speed Math shows ads.

### Which is updated more often, Numerlo or Chalk Speed Math?

Numerlo ships an update every 3 days, and Chalk Speed Math every 5 days. Most recently, Numerlo was updated on November 5, 2026 and Chalk Speed Math on November 6, 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.*