Now on Mac · iPhone and iPad coming soon
Spare Notes
Turn class recordings and course materials into one complete, illustrated notebook.
SPARE · AI WAITING COMMUNITY
While AI generates,
explore fun plugins
While AI writes its answer, Spare opens a small window with the games, films and pets you saved. It closes when the answer is ready.
macOS · Windows · iPhone
Founding team fromMassachusetts Institute of TechnologyThe Hong Kong University of Science and TechnologyMcGill University
Spare opens while AI generates and closes when it’s done
- 31
- Works
- 18
- By the team
- 13
- Open source
Supported AI
Codex
Claude
Doubao
Kimi
Qwen
DeepSeek
Gemini
CodexClaudeDoubaoKimiQwenDeepSeekGeminiSpare ecosystem
Explore more of the Spare ecosystem
A study app from Spare, plus two source-available projects that make RayNeo iO smart glasses nicer to use and easier to build for.
Source-available · Non-commercial · Developer preview
Spare io
A new launcher, glanceable apps and one iPhone companion for RayNeo iO smart glasses.
Open source · Experimental
rayneo-io-on-mac
A full-system emulator experiment: boot your own RayNeo iO firmware on a Mac, in Renode.
Spare io and rayneo-io-on-mac are unofficial projects, not affiliated with RayNeo.
Browse by kind
All works
Games14Hextris · Particle Clicker · Astray
Films & stories6Tears of Steel · Cat Detective: The Pudding Case · WING IT!
Virtual pets3Dot Critter · Spike the Cactus · My Companion
Ambient & fidget3Wait Aquarium · Fidget Board · Lo-fi Rain Window
Tools & ideas5Prompt Library · Prompt Dice · 60-Second ChallengesSPARE · SMALL MOMENTS, REAL CARE
You care for a pet. We help stray animals.
Give a little companion a name and watch it grow in Spare. Beyond the screen, we have begun helping stray dogs and purchasing everyday supplies for their care.
- 01
Choose one. Give it a name.
My Companion offers 10 dogs, 10 cats and 10 other animals. The type stays fixed after adoption; you can adopt more companions.
- 02
Care alone, or together
Keep a growth journal in the work. Sign in to Spare Time to invite a mutual friend to a separate shared-care space.
- 03
Follow the real-world progress
We start with available purchase records, then add receipt, handover and care updates by batch, recording each stage separately.
Care at your own pace. Spare arranges support according to real needs and confirmed resources. Participation is free, with no payment or invitations required. Growth and closeness record companionship; clicks and time do not convert into fixed amounts of cash, food or animals helped. Missing a day does not stop our rescue work.
Purchase screenshots · see the records
View 6 screenshotsHide screenshots
These six original purchase screenshots were supplied by the team and include different order statuses. Refunded and cancelled orders are excluded from completed records. Purchases do not prove handover or actual use for care.
Participation · solo and shared care
- My Companion
- The solo work supports naming, care and its own growth journal. An adopted companion’s type cannot be replaced, but you can adopt more, up to 10 in this pet space.
- Shared care
- Sign in to Spare Time, follow each other to become friends, and send an invitation. Shared care starts after acceptance. Each person can care once per day; the daily goal resets at 08:00 Beijing time (00:00 UTC).
- Separate experiences and records
- The solo work and shared-care space do not automatically merge pets, types or growth records. Virtual identities and stories do not represent real animals or a rescue shelter.
- No participation threshold
- Care does not require payment or recruiting anyone. Growth, closeness and care records have no cash value and are not proof of a completed real-world rescue.
What we are doing · selected purchases
The team has begun helping stray dogs and supplied purchase screenshots for dog food, pet milk powder, ingredients, beds and mats, toys and cleaning supplies. These examples are marked “Transaction successful” in the screenshots. A purchase record is not proof of delivery for rescue work.
| Item | Paid (CNY) | Order status |
|---|---|---|
| Dog food · 2 kg | ¥29.00 | Transaction successful |
| Pet milk powder · 1 tin | ¥12.19 | Transaction successful |
| Squeaky toy | ¥4.53 | Transaction successful |
| Dog food · 2 kg | ¥20.80 | Transaction successful |
Refunded, cancelled and incomplete-status orders are excluded from completed records. We do not publish a rescue spending total or animal count from these screenshots, or claim that the supplies have been handed over.
Reporting · from order to care
- 01 / Purchase orders
- Publish the original purchase screenshots supplied by the team, with selected items, paid amounts and successful order statuses. Refunded and cancelled orders are excluded from completed records.
- 02 / Receipt and handover
- Add receipt or handover information when supporting evidence is available. Receipt and actual use for rescue are recorded separately.
- 03 / Care updates
- Explain use and care progress when shareable photos or records are available. Publish only confirmed locations, partners and animal counts.
AI coding tools
Open source · maintained by their authors
All tools| Tool | What it does | Platforms | Install |
|---|---|---|---|
| CodexBar★ 21.9k · MIT | See how much of each AI plan is left, and when it resets, from the menu bar | macOS 14+ / Linux | brew install --cask codexbar |
| ccusage★ 18.7k · MIT | Find out how many tokens and dollars Claude Code and Codex used each day | macOS / Linux / Windows | npx ccusage@latest |
| ccstatusline★ 13.0k · MIT | Keep model, branch, cost and time left visible at the bottom of Claude Code | macOS / Linux / Windows | npx -y ccstatusline@latest |
| Claude Code Usage Monitor★ 8.7k · MIT | Watch how fast you burn Claude Code quota and when it runs out | macOS / Linux / Windows | uv tool install claude-monitor |
| Code-Notify★ 0.3k · MIT | Get a desktop alert when your AI agent finishes or needs you | macOS / Linux / Windows | brew install mylee04/tools/code-notify |
How it works
- 1Install the appmacOS 14+ or Windows 10/11; sign in to Spare.
- 2Save worksSave games, films, pets and tools on the site or in the app.
- 3Opens while you waitA small window opens when AI starts generating and tucks away when it’s done.
Privacy & safety
- Only detects whether AI is generating; never reads prompts, answers or code.
- Close or pause any time; your AI task keeps going.
- Community works run in an isolated sandbox without account access.
- Open-source works keep their authors, licences and source links.
Common questions
- Does it cost anything?
- The site, the desktop app and every work are free.
- Which AI tools?
- The latest GPT-6 Astra, Sol and Luna, plus Codex, Claude, Doubao, Kimi, Qwen, DeepSeek, Gemini and more.
- Can I publish my own work?
- Yes. Upload a ZIP; it goes live after review.
- Is there an iPhone app?
- Yes, on the App Store: account, devices and saves.