# Hashi Solver vs DD

The clearest difference is update cadence: DD at daily against Hashi Solver's every 3 months. DD also leads on iOS requirement (13 vs 15.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Hashi Solver sells 2 one-off in-app purchases and DD sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Hashi Solver ships an update every 3 months, DD daily. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Hashi Solver | DD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/hashi-solver/id6444668783/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 9 MB |
| Requires iOS | 15.2 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stephen Lardieri](https://appshunter.io/developer/1572222942) | [四川省与初电竞俱乐部有限公司](https://appshunter.io/developer/1669013411) |

## What reviewers say

### Hashi Solver

[App page](https://appshunter.io/ios/app/hashi-solver/id6444668783)

This app helps you solve Hashi puzzles by finding bridge combinations. Input your puzzle details into the editor and let the app generate the solution. You can also save and load your puzzles.

**Highlights:** Puzzle editor, Automatic solution generation, Save and load puzzles, Bridge combination finder, Easy-to-use interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Larger Puzzles | $2.99 | one-time |
| High Resolution Images | $4.99 | one-time |


### DD

[App page](https://appshunter.io/ios/app/dd-knots-knotpuzzlechallenge/id6757379599)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP | $2.99 | per month |


## Frequently asked questions

### Is Hashi Solver free?

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

### Is DD free?

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

### Do Hashi Solver or DD have ads?

Neither Hashi Solver nor DD shows ads.

### Which is updated more often, Hashi Solver or DD?

Hashi Solver ships an update every 3 months, and DD daily. Most recently, Hashi Solver was updated on October 27, 2026 and DD on October 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.*