Last updated on February 13th, 2026 at 06:40 am
Killer Aid – Puzzle Game Review
Killer Aid is a Puzzle/Utilities game from Trevor Butler, first launched in 13th November 2014.
It’s rated 4+ and currently has 43+ ratings on the App Store.
What Makes Killer Aid Stand Out
If you've struggled to complete tricky, tough, or deadly Killer Sudoku puzzles then this App could be for you. It provides a suite of tools to aid finding the minimum number of combinations that add up to each cage’s sum. The results are clearly displayed with any duplicate numbers highlighted in red.
The target number of cells and their sum is entered using the edit tool. This presents a pick list of cells and sums values to simplify their selection and prevent invalid entries. It is also possible to select the display of combinations with duplicate values.
Filter tools help reduce the possible combinations. Three variants of filter are provided namely:
・Exclude
・Include AND
・Include OR
The exclude filter removes any combinations that contain the specified numbers. The "include AND" filter reduces the combinations down to those that include all the specified numbers. The "include OR" filter facilitates including combinations that contain one or more of a set of numbers. These three filter types can be combined together. Cage combinations can also be manually deleted.
A calculator tool, optimised for solving Killer puzzles, is provided. This helps with some of the solving strategies (e.g. determining the sums of “innies” and “outies” – remainders inside and outside the a 3 x 3 square, row or column). The calculator includes formula text to keep track of entries.
Lastly a support menu provides access to help, Killer Sudoku solving strategies and references sources of Killer Sudoku puzzles.
This Puzzle game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Killer Aid is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 27th September 2022
Recent improvements include:
Fixed the problem of the extra tabletop padding introduced in iOS 15. Addressed the deprecated code warnings.
Download & Availability
Killer Aid is available through the official App Store for iOS devices.
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
This app is magic. Now we can successfully do even the hard Sum Sudoku s.
Has a ton of filtering options. Easy to use.
User feedback from Apple App Store
App Details
- Version: 3.0.2
- Size: 1.42 MB
- iOS: 12.4 or later
- Languages: EN
- Content Advisory:
- Developer: [Trevor Butler]()
Last updated: 27th September 2022 | Genre: Puzzle, Utilities | Developer: Trevor Butler