# Str8ts Solver

> Logic puzzle game with daily challenges and an integrated solver. (iPhone/iPad app by Th. Wolf.)

- Source: https://appshunter.io/ios/app/str8ts-solver/id1452058653 (this page in markdown: same URL + `.md`)
- Developer: [Th. Wolf](https://appshunter.io/developer/1440178074)
- Category: Games, Puzzle, Trivia
- Price: $2.99
- Age rating: 4+
- Requires: iOS 13.0 · 2 MB
- Languages: American English, German (Germany)
- Released: 2019-02-14
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/str8ts-solver/id1452058653/reviews.md

## What is Str8ts Solver?

Jeff Widderich had the idea for Str8ts in 2008. Together with Andrew Stuart, he developed a new puzzle that is a successful successor to Sudoku. It is a puzzle where you have to enter the numbers 1 to 9 in the fields, where each digit may occur only once per line and column.
With the app you can daily download new puzzles and solve them for free. There are puzzles in different difficulty levels, so that everyone will find something for their level of knowledge. If you can not find a solution, the integrated solver helps to find the next steps. The integrated solver is able to solve even the most extreme str8ts puzzles with a backtracking algorithm. So far, we've only found two puzzles where the one-step backtracking algorithm did not find a solution and needed support from the user.
As a further function, you can even enter puzzles, which are available for example in printed form, by hand. An import via a text format is also possible.
We thank Jeff Widderich and Andrew Stuart, who gave us permission to use the name "Str8ts". A highlight, of course, is the link from Andrew, through which he daily provides us with new puzzles for the app.

## Key features

- Daily new puzzles
- Multiple difficulty levels
- Integrated solver
- Manual puzzle entry
- Text format import

## Chart rankings

- #199 in Top Paid · Trivia (US App Store)

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/str8ts-solver/id1452058653/reviews.md

### 5/5 — Einfach nur Str8ts

*2024-01-01*

Einfaches Interface, 
Keine Werbung
Zwar jeden Tag für jede Schwierigkeitsstufe nur ein Rätsel,
Dafür ein Bonus Rätsel unterschiedlicher Schwierigkeitsstufen.

### 5/5 — Fast perfekt

*2021-06-12*

Wenn die Fehlererkennung auch die Straßenregel kennen würde, wäre die App perfekt. Es braucht nur ein kleines Update. Es gibt täglich vier neue Rätsel in verschiedenen Schwierigkeitsstufen. Und man kann gedruckte oder aus anderen Quellen verfügbare Rätsel einlesen und speichern.

### 1/5 — Für das Geld nur 1 Rätsel!!!!

*2021-06-05*

Man kann anscheinend pro Tag nur 1 Rätsel lösen, wollte sofort loslegen und zig Rätsel machen. Hatte mir die Beschreibung leider nicht gut durchgelesen. Würde den Kauf sofort rückgängig machen, wenn das gehen würde :(

### 1/5 — Das Geld nicht wert

*2020-04-10*

Sehr benutzerunfreundlich, wenn man es auch nur ansatzweise mit den verfügbaren Sudoku-Apps vergleicht. Viele Verbesserungsmöglichkeiten: das Spiel läuft langsam und ist sehr umständlich zu bedienen. Man kann keine Fehler ausfindig machen, ohne das ganze Rätsel zu lösen.

Außerdem gibt es pro Tag genau ein einzelnes Rätsel zu lösen. Man könnte die „Alten“ ja auch speichern?

Ich würde meinen Kauf am liebsten rückgängig machen.

## Frequently asked questions about Str8ts Solver

### What is Str8ts Solver?

Str8ts Solver is a logic puzzle game where you fill a grid with numbers 1-9, ensuring each digit appears only once per row and column. It's a successor to Sudoku, offering daily new puzzles and an integrated solver.

### How much does Str8ts Solver cost?

Str8ts Solver is a paid app, priced at $2.99. There are no in-app purchases or advertisements mentioned.

### Does Str8ts Solver have ads?

No, Str8ts Solver is ad-free. The app does not contain advertisements, allowing for an uninterrupted puzzle-solving experience.

### What devices is Str8ts Solver available on?

Str8ts Solver is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often are new puzzles added to Str8ts Solver?

New puzzles are provided daily for Str8ts Solver, ensuring a continuous supply of challenges for players.

### Can I input my own puzzles into Str8ts Solver?

Yes, Str8ts Solver allows you to manually enter puzzles, for example, from printed sources. It also supports importing puzzles via a text format.

### What is the age rating for Str8ts Solver?

Str8ts Solver has an age rating of 4+, making it suitable for a wide range of players.

### Does Str8ts Solver offer offline play?

The description does not explicitly state whether Str8ts Solver supports offline play. However, daily puzzle downloads suggest an internet connection may be needed for new content.

## Version history (last 4 releases)

### 5.0 — 2023-01-03

Even if there is no internet connection, the puzzles provided by the author can be loaded.
In "Solve" mode, there is an additional query before resetting.

### 4.0 — 2021-07-29

If digits are entered that lead to invalid streets, these streets are now marked RED and errors are reliably detected when solving the puzzle. 
In "New Puzzles", in addition to the Str8ts by Andrew Stuart, another puzzle is offered to be solved. 
The colors of the app have been adjusted for dark mode.

### 2.0 — 2020-06-23

With the update to iOS 13, a function was implemented that can be used to scan Str8ts puzzles from printed templates using the camera.
A rare problem with the automatic Str8ts solver has also been fixed.

### 1.0 — 2019-02-13

No release notes.

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All apps by Th. Wolf: https://appshunter.io/developer/1440178074

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*