# DamApp vs Manhole Card Map

The clearest difference is ads: DamApp at none against Manhole Card Map's shown. Manhole Card Map's advantage is update cadence (weekly vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DamApp ships an update every 2 months, Manhole Card Map weekly. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | DamApp | Manhole Card Map |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 228 MB | 141 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Yuta Kokubo](https://appshunter.io/developer/1549449778) | [TETSUNOSUKE HIDA](https://appshunter.io/developer/6773281087) |

## What reviewers say

### DamApp

[App page](https://appshunter.io/ios/app/damapp/id1549449776)

Discover over 2,000 dams across Japan. Search by name, distance, prefecture, type, or purpose. Record check-ins, dam card ownership, and add favorites or notes. All dam information is available offline.

**Highlights:** Search over 2,000 dams nationwide, Filter by distance, prefecture, type, purpose, Offline access to dam details, Record check-ins and dam card ownership, Map view with MAPCODE support, Import visit records from text files

**Features:** Vision Pro support

**In-app purchases:** none


### Manhole Card Map

[App page](https://appshunter.io/ios/app/manhole-card-map/id6773281085)

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

**In-app purchases:** none


## Frequently asked questions

### Is DamApp free?

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

### Is Manhole Card Map free?

Manhole Card Map is free to download, with no in-app purchases.

### Do DamApp or Manhole Card Map have ads?

Manhole Card Map shows ads; DamApp does not.

### Which is updated more often, DamApp or Manhole Card Map?

DamApp ships an update every 2 months, and Manhole Card Map weekly. Most recently, DamApp was updated on October 10, 2026 and Manhole Card Map on October 15, 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.*