Free
In-App Purchases

Details

Released
September 24, 2010
Updated
October 23, 2026

Features

Nanogram HD: Picture Puzzles screenshot #1 for iPhone
Nanogram HD: Picture Puzzles screenshot #2 for iPhone
Nanogram HD: Picture Puzzles screenshot #3 for iPhone
iphone
iphoneDuo
ipad
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About

A logic puzzle game where you fill squares on a grid based on number clues to reveal retro pictures. Offers hint modes for beginners and advanced players, with options to create and share your own puzzles.

✓Logic grid puzzles
✓Number clue system
✓Retro picture reveals
✓Hint modes (on/off)
✓Custom puzzle creation
✓Puzzle sharing
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What's New in Nanogram HD

5.2.0

October 23, 2026

● Changed the application name ● Updated art work and graphics (bit of UI modernization) ● Many iPad improvements to play well in the new iOS enhancements ● Removed Ads ● Added support for iPhone Duo ● Be sure to restore purchases if you had previously purchased puzzle packs

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Subscriptions & In-App Purchases

$2.99

Metropolitan Puzzle Pack

Metropolitan Puzzle Pack

User reviews

Why ask review?

Not good

Addictive game!

I would like the fill button and X button to be a little larger and spaced apart more. I use my thumb and no I hit one button only to find it didn't switch.

Umm no actual gameplay

There is what I think is a glitch where you tap each individual square and it will automatically place an x or a square. So all you have to do is tap each square and you will eventually get the answer from that. It always places an x on an unused square and it puts a square on any square that is needed for the puzzle. So there is basically no gameplay.
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Loved it until loud blaring commercials

I loved this game for a long time and purchased extra puzzles until just recently it started blaring loud video commercials upon launch. So annoying and no way to stop them. You can't even buy your way out. I'm going to switch to another app. My peace and quiet is worth more than that. So sad they ruined a good game.
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Developers are maybe a little lazy

I bought the daily and daily big upgrades a long time ago. I can no recognize many of the puzzles, such as girl with hat and armadillo shopping just from the grid and numbers. This was a fun app for a while so no harm in downloading and playing, but I'd avoid the daily puzzle options if I knew then what I know now.
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Developer apps

FAQ

What is Nanogram HD?

Nanogram HD is a logic puzzle game where players fill in squares on a grid according to numeric clues to reveal a hidden retro picture. It's designed to be easy to learn and fun for puzzle lovers.

Does Nanogram HD have ads?

No, Nanogram HD is ad-free. The developers have turned off all advertisements to enhance the user experience.

Can I create my own puzzles in Nanogram HD?

Yes, if you have an iPad, you can build your own puzzles. The app simplifies the process by automatically generating the number clues once you draw your picture.

How many puzzles are available in Nanogram HD?

The app offers a vast collection of puzzles. There are over 1000 puzzles available on the iPad and over 500 on the iPhone, with daily puzzle packs providing a random selection.

What is the age rating for Nanogram HD?

Nanogram HD has an age rating of 4+. This indicates it is suitable for young children and general audiences.

Is Nanogram HD available on multiple devices?

Yes, Nanogram HD is supported on both iPhone and iPad devices, allowing users to enjoy the puzzles across different Apple platforms.

How often is Nanogram HD updated?

The app was last updated on October 23, 2026, to version 5.2.0. While specific update frequency isn't detailed, this indicates ongoing support and development.

What do users like about Nanogram HD?

Users appreciate the fun logic puzzle gameplay and the satisfaction of revealing retro pictures. The option to create and share custom puzzles is also a highly valued feature.