# FORMBO vs Rill

The clearest difference is in-app purchases: Rill at none against FORMBO's 1. Rill also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). FORMBO's advantage is update cadence (daily vs every 4 days). On price and ads there is nothing between them.

Both are free to download. FORMBO sells 1 one-off in-app purchase. Rill asks for nothing beyond the download.

FORMBO ships an update daily, Rill every 4 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FORMBO | Rill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rill-number-path-puzzle/id6816717402/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 days |
| Monetization | — | Ad-supported |
| Size | 23 MB | 6 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DATOBO](https://appshunter.io/developer/6806855067) | [Gino Cattuzzo](https://appshunter.io/developer/1896638479) |

## What reviewers say

### FORMBO

[App page](https://appshunter.io/ios/app/formbo/id6811333873)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FORMBO Premium | $7.99 | one-time |


### Rill

[App page](https://appshunter.io/ios/app/rill-number-path-puzzle/id6816717402)

A daily logic puzzle game where you draw a single water channel through numbered wells in order, avoiding fences. It offers daily challenges, endless levels, and timed blitz modes, all playable with simple drag controls.

**Highlights:** Daily logic puzzles, Endless ladder levels, Timed blitz mode, Intuitive drag controls, Hint system, Progress saving, Multiple themes

**In-app purchases:** none


## Frequently asked questions

### Is FORMBO free?

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

### Is Rill free?

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

### Do FORMBO or Rill have ads?

Both FORMBO and Rill show ads.

### Which is updated more often, FORMBO or Rill?

FORMBO ships an update daily, and Rill every 4 days. Most recently, FORMBO was updated on October 26, 2026 and Rill 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.*