About
Combine six numbers using basic arithmetic operations to reach a target number. Offers daily challenges and practice modes with adjustable difficulty. Earn scores based on proximity, elegance, and speed, with offline play available.
What's New in Sumstone
1.1
May 18, 2026
BLITZ MODE Race the clock with the all-new Blitz Mode! Toggle it on for a 30-second countdown timer that adds a thrilling speed challenge to any puzzle. Solve it before time runs out to earn a guaranteed full speed bonus. No penalty for cutting it close. Available for both free play and daily puzzles, with your Blitz results tracked and included in your daily share. Think fast! Minor Enhancements - Text changes to increase readability
MoreSubscription plans
Sumstone Pro - Monthly
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FAQ
What is Sumstone?
Sumstone is a number puzzle game inspired by the Countdown game show. Players combine six numbers using addition, subtraction, multiplication, and division to reach a target number.
Does Sumstone have ads?
The provided data does not specify if Sumstone contains advertisements. However, it does offer optional subscription plans for 'Sumstone Pro'.
Can I play Sumstone offline?
Yes, Sumstone is designed to be played offline. Your puzzles, stats, and progress are stored directly on your device, allowing you to play without an internet connection.
How is scoring calculated in Sumstone?
Each round in Sumstone is scored out of 100 based on three dimensions: proximity (how close you got to the target), elegance (the fewest operations used), and speed (the time taken to solve the puzzle).
What are the different game modes in Sumstone?
Sumstone features a 'Daily Puzzle' with a new challenge each day that increases in difficulty throughout the week, and a 'Practice Mode' where you can play unlimited puzzles across four difficulty levels: Easy, Medium, Hard, and Expert.
What are the subscription options for Sumstone Pro?
Sumstone Pro offers two subscription plans: a monthly subscription for $1.99 and a yearly subscription for $17.99, providing access to premium features.
What is the age rating for Sumstone?
Sumstone has an age rating of 4+, making it suitable for a wide range of players.
How often is Sumstone updated?
Sumstone was last updated on May 18, 2026, with version 1.1. The release date was May 17, 2026, suggesting recent development activity.