# Viper maze vs ZEN Tile Flow

The clearest difference is price: ZEN Tile Flow at Free against Viper maze's $1.99. ZEN Tile Flow also leads on update cadence (every 2 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ZEN Tile Flow is free to download; Viper maze costs $1.99 up front. Viper maze sells 1 one-off in-app purchase and ZEN Tile Flow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Viper maze ships an update every 3 months, ZEN Tile Flow every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Viper maze | ZEN Tile Flow |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 6 MB | 43 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Martin Gruner](https://appshunter.io/developer/1824447154) | [YURY NICKOLAEVICH BREI](https://appshunter.io/developer/1895503289) |

## What reviewers say

### Viper maze

[App page](https://appshunter.io/ios/app/viper-maze/id6748138935)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full game | $3.99 | one-time |


### ZEN Tile Flow

[App page](https://appshunter.io/ios/app/zen-tile-flow-pipe-puzzle/id6773094129)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Unlock | $3.99 | one-time |


## Frequently asked questions

### Is Viper maze free?

Viper maze costs $1.99, and also offers in-app purchases.

### Is ZEN Tile Flow free?

ZEN Tile Flow is free to download, with in-app purchases available.

### Do Viper maze or ZEN Tile Flow have ads?

Neither Viper maze nor ZEN Tile Flow shows ads.

### Which is updated more often, Viper maze or ZEN Tile Flow?

Viper maze ships an update every 3 months, and ZEN Tile Flow every 2 weeks. Most recently, Viper maze was updated on November 5, 2026 and ZEN Tile Flow on October 31, 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.*