Pi, your personal AI vs Lightvessel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pi, your personal AI
This AI companion offers a supportive space for conversations, helping you explore ideas, process difficult topics, or simply have someone to listen. It adapts to your needs, providing assistance with decision-making, learning, and inspiration.
- Personalized AI conversations
- Voice mode for live interaction
- Idea exploration and brainstorming
- Decision-making support
- Learning and language practice
- Emotional support and venting
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Hey, I'm Pi, your personal intelligence partner. I'm designed to empower you to feel confident and supported to tackle everyday life. Whether you're looking to explore new ideas, talk through a difficult topic, or just want someone to listen, Pi is here for you. TALK IT OUT - Prep for a hard conversation, or just vent when you need someone to talk to. Try voice mode to talk it out live! FUEL YOUR CURIOSITY - Learn about a new topic, or practice a language. GET THINGS DONE - Talk through decision-making, or come up with an action plan to tackle something new. GET INSPIRED - Brainstorm new ideas, or get recommendations on what to watch next. HAVE FUN - Ask Pi anything! Pi grows with you – the more you talk with Pi, the better it evolves and understands you. Pi is created by Inflection AI, the Public Benefit Corporation empowering people with emotionally intelligent, human-centered AI.
Lightvessel
This AI companion helps you process emotions and reflect on your inner state. Engage in guided conversations, track your mood, and find calm with a virtual lighthouse. Save memories and receive gentle AI-generated replies.
- AI-powered conversations
- Mood logging and pattern analysis
- Guided breathing exercises
- Digital drift bottle for messages
- On-device data storage
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Some days call for a place to pause. Lightvessel is a quiet vessel at sea—an AI companion that helps you notice the tides within, put feelings into words, and move at your own pace. Step aboard to: • Talk things through in Vent, Untangle, or Companion. • Log your inner weather and notice patterns over time. • Breathe with the lighthouse when you need a steadier rhythm. • Save memories and send a thought in a drift bottle for a gentle reply. Your conversations, mood logs, and memories stay on your device. Messages are securely processed to generate AI replies. Lightvessel contains no advertising or tracking SDKs. Lightvessel is not a medical device, therapist, or crisis service and does not diagnose or treat. If you are in immediate danger, contact local emergency services. A limited number of AI conversations is included. Optional monthly and yearly subscriptions unlock unlimited conversations. Prices, duration, and any eligible introductory trial are shown before purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lightvessel.lenia.tech/privacy.html
Screenshots
Verdict
The clearest difference is rating: Lightvessel at 5.0 against Pi, your personal AI's 4.4. Lightvessel also leads on review sentiment (100% vs 60%). Pi, your personal AI's advantage is in-app purchases (none vs 2) and ratings volume (2.5K vs 1). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lightvessel sells 2 in-app purchases, starting at $7.99 per month. Pi, your personal AI asks for nothing beyond the download.
Lightvessel holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Pi, your personal AI has 2.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Pi, your personal AI's written reviews are positive against 100% of Lightvessel's.
Pi, your personal AI ships an update every 2 days, Lightvessel weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Pi, your personal AI | Lightvessel |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (2.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 60.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.5K — better | 1 |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 16 — better | 18.0 |
| Further details — not scored | ||
| Size | 170 MB | 9 MB |
| Age rating | 17+ | 17+ |
| Developer | Inflection AI | 晓航 王 |
Customer experience
Pi, your personal AI
Lightvessel
Bugs and requests
Pi, your personal AI
Reported bugs
3 issues- Frequent freezes and unresponsiveness
- Inconsistent behavior with voice and text inputs
- Sync issues between web and mobile versions
Requested features
4 requests- Dark mode option
- Ability to save and revisit past conversations
- More voice options and customization
- Improved memory and consistency across conversations
Lightvessel
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Pi, your personal AI
No in-app purchases
Lightvessel
- Lightvessel Premium(Monthly)3 Days trial$7.991 Month
- Lightvessel Premium(Yearly)3 Days trial$69.991 Year
Questions
Is Pi, your personal AI free?
Is Lightvessel free?
Which has better reviews, Pi, your personal AI or Lightvessel?
Do Pi, your personal AI or Lightvessel have ads?
Which is updated more often, Pi, your personal AI or Lightvessel?
Other comparisons
