# SpotTour vs ゼロカーボン・チャレンジ

The clearest difference is rating: SpotTour at 3.0 against ゼロカーボン・チャレンジ's 1.0. SpotTour also leads on review sentiment (32% vs 0%). ゼロカーボン・チャレンジ's advantage is device support (3 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

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

SpotTour holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 32% of SpotTour's written reviews are positive against 0% of ゼロカーボン・チャレンジ's.

SpotTour ships an update every 3 weeks, ゼロカーボン・チャレンジ monthly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SpotTour | ゼロカーボン・チャレンジ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/spottour/id1065498137/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id6475059135/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **31.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 52 MB | 29 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [SpotTour, Inc.](https://appshunter.io/developer/1478207199) | [JAPAN ZERO CARBON SMART CITY FOUNDATION, GENERAL INC. ASSOCIATION - AXFG5J98TW](https://appshunter.io/developer/1723265776) |

## What reviewers say

### SpotTour

[App page](https://appshunter.io/ios/app/spottour/id1065498137)

Discover hidden local attractions and support sustainable tourism with this multilingual app. It offers navigation, digital stamps, and the ability to create photo books of your travels. Explore new places or revisit familiar ones with unique insights.

**Highlights:** Sustainable tourism support, Discover local and hidden attractions, 12-lingual support, Navigation to sites, Digital stamps, Photo book creation, Tour history recording

**In-app purchases:** none


### ゼロカーボン・チャレンジ

[App page](https://appshunter.io/ios/app/id6475059135)

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

**In-app purchases:** none


## Frequently asked questions

### Is SpotTour free?

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

### Is ゼロカーボン・チャレンジ free?

ゼロカーボン・チャレンジ is free to download, with no in-app purchases.

### Which has better reviews, SpotTour or ゼロカーボン・チャレンジ?

SpotTour is rated higher. SpotTour averages 3.0 out of 5 from 1 ratings, while ゼロカーボン・チャレンジ averages 1.0 from 1 ratings.

### Do SpotTour or ゼロカーボン・チャレンジ have ads?

Neither SpotTour nor ゼロカーボン・チャレンジ shows ads.

### Which is updated more often, SpotTour or ゼロカーボン・チャレンジ?

SpotTour ships an update every 3 weeks, and ゼロカーボン・チャレンジ monthly. Most recently, SpotTour was updated on November 6, 2026 and ゼロカーボン・チャレンジ on November 4, 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.*