# Number Chain by SZY vs Stack Three FRVR

The clearest difference is rating: Stack Three FRVR at 5.0 against Number Chain by SZY's 3.0. Stack Three FRVR also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (9.0 vs 15.0). Number Chain by SZY's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Stack Three FRVR sells 1 one-off in-app purchase. Number Chain by SZY asks for nothing beyond the download.

Stack Three FRVR holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Number Chain by SZY ships an update every 4 months, Stack Three FRVR every 2 months. The most recent releases landed on September 18, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Number Chain by SZY | Stack Three FRVR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/number-chain-by-szy/id490969339/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stack-three-frvr/id1355649105/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 60 MB | 42 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shen Zhongyuan](https://appshunter.io/developer/385090494) | [FRVR](https://appshunter.io/developer/911820974) |

## What reviewers say

### Number Chain by SZY

[App page](https://appshunter.io/ios/app/number-chain-by-szy/id490969339)

A puzzle game where you create chains of three or more matching or consecutive numbers to clear them and earn points. Achieve high scores by forming longer chains and triggering "Rensa" combos.

**Highlights:** Build removable chains of numbers, Score points based on chain length, Trigger automatic chain reactions (Rensa), Utilize a 'Final Number of 0' for clearing, Support for leaderboards and achievements, Automatic game saving

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

**In-app purchases:** none


### Stack Three FRVR

[App page](https://appshunter.io/ios/app/stack-three-frvr/id1355649105)

Match three or more colorful heads horizontally or vertically to clear space and score points. Keep the board clear as new heads arrive to avoid game over. Enjoy endless hours of fun with a bright soundtrack and pleasant graphics.

**Highlights:** Match three colors to clear space, Score points and rack up high scores, Fresh challenges and bonus options, Upbeat original soundtrack, Colorful, pleasant graphics, Endless hours of fun

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Number Chain by SZY free?

Number Chain by SZY is free to download, with no in-app purchases.

### Is Stack Three FRVR free?

Stack Three FRVR is free to download, with in-app purchases available.

### Which has better reviews, Number Chain by SZY or Stack Three FRVR?

Stack Three FRVR is rated higher. Number Chain by SZY averages 3.0 out of 5 from 1 ratings, while Stack Three FRVR averages 5.0 from 2 ratings.

### Do Number Chain by SZY or Stack Three FRVR have ads?

Both Number Chain by SZY and Stack Three FRVR show ads.

### Which is updated more often, Number Chain by SZY or Stack Three FRVR?

Number Chain by SZY ships an update every 4 months, and Stack Three FRVR every 2 months. Most recently, Number Chain by SZY was updated on September 18, 2026 and Stack Three FRVR on September 25, 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.*