Semantra
Heat-seek the hidden word
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Follow meaning alone to reach the hidden word first.
Read the constellation of meaning on the radar.
Duel vs AI, online, or a nearby device. One-time unlock.
Reach the hidden word before your opponent — using nothing but how CLOSE your guesses are in meaning. A fresh kind of word-guessing duel.
Type any word and see its HEAT (0–100): how semantically close it is to the hidden target. The nearer the radar's centre, the hotter. Related words link up into a living "constellation of meaning." Follow the heat, read the connections, and close in.
WHAT MAKES IT DIFFERENT
- Win by meaning, not letter count or category
- A heat radar where every guess sits by its closeness to the answer
- Draft 3 self-insight items that change how you read the board
MODES
- vs AI — four strengths (Easy / Normal / Hard / Expert).
- Online — 1-on-1 via Game Center
- Nearby — two devices in the same place
FEATURES
- Deterministic, on-device scoring from 300-dimension meaning vectors. No LLM, no server — instant and consistent
- The answer changes every game, so there's nothing to memorize
- Japanese / English
- Built-in How-to-Play in Settings
PRICING
Free to play. A one-time "Premium" unlock opens all items, the random loadout, Hard & Expert difficulty, and online matches. No subscription.
Note: multiplayer is played between players using the same language setting.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Text input fix
Fixed an issue where the keyboard would close again immediately and no text could be entered, on devices using certain third-party keyboards (such as Shimeji).
Move counter
A round ends in a draw at 30 moves, so the move count is now always shown as "12/30" — and turns red for the last 5.
Better item clues
Meteor Search and Prism could surface words far too distant from the answer. Their reveals are now genuinely useful leads.
Black Hole fix
In duels, absorbed words vanished only from your own board. They now clear the opponent's board as well.
Thanks for playing!
The developer, seiji honda, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- seiji honda
- Size
- 90.4 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 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+
- In-App Purchases
Yes
- Premium $0.49
- Copyright
- © Seiji Honda

