# 花粉症ナビ vs DustMap

The clearest difference is in-app purchases: 花粉症ナビ at none against DustMap's 4. 花粉症ナビ also leads on ads (none vs shown) and update cadence (weekly vs every 5 months). On price and device support there is nothing between them.

Both are free to download. DustMap sells 4 one-off in-app purchases. 花粉症ナビ asks for nothing beyond the download.

花粉症ナビ ships an update weekly, DustMap every 5 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 花粉症ナビ | DustMap |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 5 months |
| Size | 26 MB | 63 MB |
| Requires iOS | **9.0** | 15 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [NARA INSTITUTE OF SCIENCE AND TEC.](https://appshunter.io/developer/1342503727) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### 花粉症ナビ

[App page](https://appshunter.io/ios/app/id1342503759)

**Features:** macOS Compatibility

**In-app purchases:** none


### DustMap

[App page](https://appshunter.io/ios/app/dustmap/id6744262672)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| Coffee (Large) | $1.99 | one-time |
| システム改善応援費 | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## Frequently asked questions

### Is 花粉症ナビ free?

花粉症ナビ is free to download, with no in-app purchases.

### Is DustMap free?

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

### Do 花粉症ナビ or DustMap have ads?

DustMap shows ads; 花粉症ナビ does not.

### Which is updated more often, 花粉症ナビ or DustMap?

花粉症ナビ ships an update weekly, and DustMap every 5 months. Most recently, 花粉症ナビ was updated on October 3, 2026 and DustMap on October 8, 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.*