# SherlockForms vs Twindow

The clearest difference is ads: SherlockForms at none against Twindow's shown. SherlockForms also leads on device support (3 vs 1). Twindow's advantage is update cadence (every 5 days vs every 12 months). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SherlockForms ships an update every 12 months, Twindow every 5 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SherlockForms | Twindow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sherlockforms/id1347062847/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 13 MB | 92 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Amicale du Personel de l'institut pour Deficients Visuels](https://appshunter.io/developer/563144151) | [Ozkan Yilmaz](https://appshunter.io/developer/1708878442) |

## What reviewers say

### SherlockForms

[App page](https://appshunter.io/ios/app/sherlockforms/id1347062847)

A simple game designed to help visually impaired children identify shapes. It progresses through levels with increasingly smaller shapes, aiding supervisors in assessing visual acuity while keeping children engaged.

**Highlights:** Shape identification challenges, Progressive difficulty with smaller shapes, Visual acuity assessment tool, Engaging gameplay for children, Designed for visually impaired users

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

**In-app purchases:** none


### Twindow

[App page](https://appshunter.io/ios/app/twindow-find-the-difference/id6801139744)

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

**In-app purchases:** none


## Frequently asked questions

### Is SherlockForms free?

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

### Is Twindow free?

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

### Do SherlockForms or Twindow have ads?

Twindow shows ads; SherlockForms does not.

### Which is updated more often, SherlockForms or Twindow?

SherlockForms ships an update every 12 months, and Twindow every 5 days. Most recently, SherlockForms was updated on October 4, 2026 and Twindow on October 15, 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.*