# SM BrainyIQ vs Sudoku Flow

The clearest difference is in-app purchases: SM BrainyIQ at none against Sudoku Flow's 4. SM BrainyIQ also leads on iOS requirement (15.1 vs 17.0). Sudoku Flow's advantage is ads (none vs shown) and update cadence (every 8 days vs every 8 months). On price and device support there is nothing between them.

Both are free to download. Sudoku Flow sells 4 in-app purchases, starting at $1.99 per 7 days. SM BrainyIQ asks for nothing beyond the download.

SM BrainyIQ ships an update every 8 months, Sudoku Flow every 8 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | SM BrainyIQ | Sudoku Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/sudoku-flow-logic-puzzles/id6792211642/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 12 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SOMMER Media s.r.o.](https://appshunter.io/developer/1716179984) | [JCY Advisors](https://appshunter.io/developer/1880786669) |

## What reviewers say

### SM BrainyIQ

[App page](https://appshunter.io/ios/app/sm-brainyiq/id6748758788)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudoku Flow

[App page](https://appshunter.io/ios/app/sudoku-flow-logic-puzzles/id6792211642)

Enjoy classic Sudoku puzzles without any advertisements or data tracking. Solve grids at your own pace with a clean, focused interface. Support an independent studio with a one-time purchase to unlock all content.

**Highlights:** No ads, ever, No data tracking, Solve at your own pace, Mistake highlighting toggle, Hint system, Multiple difficulty levels, One-time purchase unlocks

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Puzzle Master Pass — Weekly | $1.99 | per 7 days |
| Puzzle Master Pass — Yearly | $49.99 | per year |
| All Packs | $2.99 | one-time |
| Puzzle Master | $12.99 | one-time |


## Frequently asked questions

### Is SM BrainyIQ free?

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

### Is Sudoku Flow free?

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

### Do SM BrainyIQ or Sudoku Flow have ads?

SM BrainyIQ shows ads; Sudoku Flow does not.

### Which is updated more often, SM BrainyIQ or Sudoku Flow?

SM BrainyIQ ships an update every 8 months, and Sudoku Flow every 8 days. Most recently, SM BrainyIQ was updated on October 25, 2026 and Sudoku Flow on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*