Comparison

Leaf vs Personal.AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Leaf

Read full description

Private, offline AI chat that lives entirely on your iPhone. Leaf pairs a calm, botanical interface with Apple’s on-device Foundation Model so you can brainstorm, write, summarize notes, and work through code—even in Airplane Mode. No cloud servers. No accounts. No subscriptions. WHY LEAF IS DIFFERENT • 100% On-Device & Offline — Every prompt and response is generated locally on your iPhone using Apple Intelligence. Zero data leaves your device, and zero water or cloud data-center energy is used. • 4-Layer Context & Memory Engine — Inspired by modern LLM memory systems, Leaf combines session context, long-term user memories, recent chat summaries, and a smart token-based sliding window so it remembers who you are across conversations. • Transparent, Editable Memory — Leaf automatically learns your preferences, skills, and goals as you chat—or you can add, edit, and delete memories anytime in the built-in Memory & Context Inspector. • Smart Cross-Chat Summaries — When you switch topics, Leaf summarizes past threads on-device so you can pick up right where you left off. • No Account & No Subscription — Open Leaf and start chatting immediately. No sign-up, no email, no token paywalls, and no recurring fees. BUILT FOR REAL WORK & EVERYDAY THINKING • Summarize rough meeting or lecture notes into crisp checklists • Draft warm, concise replies and emails without filler • Debug code, compare architectures, and brainstorm weekend projects • Pin important threads and inspect real-time token capacity at a glance YOUR WORDS STAY YOURS In a world of cloud AI that harvests conversations for training, Leaf takes a quieter, local-first approach. Your thoughts stay on your phone—we can’t read them, and we never will.

About

Personal.AI

An on-device AI assistant that processes information locally for enhanced privacy and structured understanding. It offers web search, local document querying, and agent mode for complex reasoning, all without sending data to external servers.

Highlights
  • On-device AI processing
  • Web search integration
  • Local RAG for document querying
  • Agent mode for multi-step reasoning
  • Offline AI experience
  • Support for quantized models
Features
Read full description

Personal.AI is an on-device AI assistant designed for reading and exploring AI-generated knowledge in a clear, structured, and private way. • All AI runs directly on your device • Interact with powerful models without sending data to external servers • Designed for privacy, readability, and simplicity • Structured answers that make complex topics easy to understand Key Features • On-Device AI Processing All AI runs locally. Your prompts and responses stay private. • Web Search Get real-time answers from the web, even for complex questions. • Local RAG Ask questions using your documents and saved content. • Agent Mode Get smarter answers with multi-step reasoning. • Support for Quantized Models Supports GGUF models for efficient on-device performance. • Offline AI Experience Works fully offline once a model is downloaded. • Model Switching Choose smaller models for speed or larger models for deeper answers. • Structured Reading Interface Clean, layered responses designed for easy reading. • Privacy-First Design No tracking. No data collection. Your data stays with you. Privacy • AI processing happens entirely on your device • No personal data is collected • No data is sent to external servers • No analytics or tracking Our Goal • A non-profit project focused on on-device AI • Built for privacy, readability, and user-first design

Screenshots

Leaf4 screens
Personal.AI4 screens

Verdict

The call

The clearest difference is update cadence: Personal.AI at weekly against Leaf's every 3 months. Personal.AI also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Leaf ships an update every 3 months, Personal.AI weekly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 7 level
Leaf versus Personal.AI: the parameters behind the verdict, then further details
ParameterLeafPersonal.AI
PriceFreeFree
Rating—5.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS26.017.0 — better
Further details — not scored
Size7 MB15 MB
Age rating17+4+
DeveloperBig Numbers, Inc.Jagadeesh Raghu

In-app purchases

None

Leaf

No in-app purchases

None

Personal.AI

No in-app purchases

Questions

Is Leaf free?
Leaf is free to download, with no in-app purchases.
Is Personal.AI free?
Personal.AI is free to download, with no in-app purchases.
Do Leaf or Personal.AI have ads?
Neither Leaf nor Personal.AI shows ads.
Which is updated more often, Leaf or Personal.AI?
Leaf ships an update every 3 months, and Personal.AI weekly. Most recently, Leaf was updated on October 24, 2026 and Personal.AI on October 7, 2026.

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