QSum: Number Sums Puzzle
Relaxing offline math & logic
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Match numbers, clear the board.
QSum is a cozy number puzzle with one simple rule: drag across neighboring tiles so their numbers add up to the target sum. Clear every tile for the perfect S grade — but watch out, one greedy move can strand the rest of the board. A relaxing logic game and a genuine brain workout in the same little package.
HOW TO PLAY
- Drag across neighboring tiles so they add up to the target number
- Every cleared tile counts — clear the whole board for the perfect S grade
- Stuck? Ring the hint bell to reveal the next move on the perfect path
- Plan ahead: one greedy move can leave the rest of the board unsolvable
LEVEL MODE — Four handcrafted packs, from gentle 3x3 gardens to the fiendish 6x6 Quantum Matrix. Every level is verified to have a perfect solution — this logic puzzle never deals you an unsolvable board.
ENDLESS MODE — Fresh number puzzles forever. Clear a board perfectly to grow your streak; one miss and it's gone. A quick math workout or a long zen session — your call.
HINTS WHEN YOU NEED THEM — Hints highlight the next move on the perfect path. Earn more by watching an optional ad, or grab a hint pack whenever you need one.
MADE WITH CARE
- Free to play, and playable completely offline — perfect for flights and commutes
- Warm, tactile tile design with light and dark themes
- Satisfying sounds and haptics (toggle anytime)
- No forced ads — ever. Ads are optional and always your choice
- No account, no sign-in; your progress stays on your device
- Train your brain: logic, mental math, and planning in every board
A little brain teaser for your coffee break, from a tiny studio that loves number games.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Small update: polish and improvements.
The developer, Pixie Lab Studios LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pixie Lab Studios LLC
- Size
- 44.4 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Super Tip $9.99
- 50 Hints $2.99
- 10 Hints $0.99
- Coffee Tip $4.99
- Nice Tip $1.99
- Copyright
- © 2026 Pixie Lab Studios LLC