# ヘビ貿易 vs Flat Machine

The clearest difference is in-app purchases: ヘビ貿易 at none against Flat Machine's 4. ヘビ貿易 also leads on iOS requirement (13.0 vs 15.0). Flat Machine's advantage is update cadence (every 5 days vs monthly) and review sentiment (94% vs 72%). On price, rating, ads and device support there is nothing between them.

Both are free to download. Flat Machine sells 4 one-off in-app purchases. ヘビ貿易 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ヘビ貿易 against 4.9 for Flat Machine. That said, the two scores are not equally well evidenced: Flat Machine has 68 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 72% of ヘビ貿易's written reviews are positive against 94% of Flat Machine's.

ヘビ貿易 ships an update monthly, Flat Machine every 5 days. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ヘビ貿易 | Flat Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1601556431/reviews)** | [4.9 (68 ratings)](https://appshunter.io/ios/app/flat-machine-post-apocalyptic/id6473309112/reviews) |
| Number of ratings | 2 | **68** |
| Positive reviews | 72.0% of reviews | **93.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 81 MB | 118 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Satoru Higuchi](https://appshunter.io/developer/1114844580) | [zxima.LLC](https://appshunter.io/developer/714594983) |

## What reviewers say

### ヘビ貿易

[App page](https://appshunter.io/ios/app/id1601556431)

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

**In-app purchases:** none


### Flat Machine

[App page](https://appshunter.io/ios/app/flat-machine-post-apocalyptic/id6473309112)

Control a limbless robot tasked with defending a settlement in a post-apocalyptic world. Engage in simple, timing-based battles against various threats and make choices that influence the game's multiple endings. Discover the mystery of your own identity.

**Highlights:** Simple, timing-based battles, Item combination system, Respond to various visitors, Multiple endings based on choices, Daily events and encounters

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AD removal | $2.99 | one-time |
| Donation(S) | $3.99 | one-time |
| Donation(M) | $14.99 | one-time |
| Donation(L) | $34.99 | one-time |

**What reviewers like**

- 👍 Highly engaging gameplay
- 💖 Compelling characters and story
- 💡 Multiple endings and replayability
- ✨ Unique post-apocalyptic world
- 🎮 Satisfying progression and strategy

**What reviewers complain about**

- 🐛 Ad issues (app store redirection)
- 🐛 Ads sometimes break BGM
- ⚖️ Endless mode can feel like pure luck
- ❓ Some events seem to have limited interactions
- 🚫 Lack of Chinese translation

**Reported bugs**

- Ads redirect to app store and prevent item rewards
- Ad BGM continues playing after ad ends
- Ad BGM persists even after restarting app
- Agoda ads prevent continuing the game

**Requested features**

- Add Chinese translation
- Add Vietnamese translation
- Add Spanish translation
- Option for one-time purchase to remove ads
- More interactions with certain characters (e.g., training robot)


## Frequently asked questions

### Is ヘビ貿易 free?

ヘビ貿易 is free to download, with no in-app purchases.

### Is Flat Machine free?

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

### Which has better reviews, ヘビ貿易 or Flat Machine?

ヘビ貿易 is rated higher. ヘビ貿易 averages 5.0 out of 5 from 2 ratings, while Flat Machine averages 4.9 from 68 ratings.

### Do ヘビ貿易 or Flat Machine have ads?

Both ヘビ貿易 and Flat Machine show ads.

### Which is updated more often, ヘビ貿易 or Flat Machine?

ヘビ貿易 ships an update monthly, and Flat Machine every 5 days. Most recently, ヘビ貿易 was updated on September 22, 2026 and Flat Machine on September 24, 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.*