# PoolDose vs Numo Scanner

The clearest difference is in-app purchases: Numo Scanner at none against PoolDose's 1. Numo Scanner also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PoolDose sells 1 one-off in-app purchase. Numo Scanner asks for nothing beyond the download.

PoolDose ships an update every 2 months, Numo Scanner every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PoolDose | Numo Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 2 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Laure Shin](https://appshunter.io/developer/6785226025) | [Numotamo.com](https://appshunter.io/developer/6800352447) |

## What reviewers say

### PoolDose

[App page](https://appshunter.io/ios/app/pooldose-pool-calculator/id6790205421)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock history & all waters | $4.99 | one-time |


### Numo Scanner

[App page](https://appshunter.io/ios/app/numo-scanner/id6800352445)

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

**In-app purchases:** none


## Frequently asked questions

### Is PoolDose free?

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

### Is Numo Scanner free?

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

### Do PoolDose or Numo Scanner have ads?

Neither PoolDose nor Numo Scanner shows ads.

### Which is updated more often, PoolDose or Numo Scanner?

PoolDose ships an update every 2 months, and Numo Scanner every 2 days. Most recently, PoolDose was updated on October 28, 2026 and Numo Scanner on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*