Comparison

Reef AI vs Electron Flow

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

Head to head
About

Reef AI

Features
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Reef is an on-device AI harness for iPhone and iPad. Connect a local or hosted model, add tools and files when you need them, and keep chats and data on your device. You choose the LLM and the credentials. Reef does not include a subscription or relay your traffic. MODELS OpenAI, Anthropic, Mistral, Groq, OpenRouter, Perplexity, and OpenAI-compatible servers—Ollama, LM Studio, vLLM, LocalAI, Jan, and others. Multiple profiles with per-discussion settings. API keys stored in the iOS keychain. TOOLS Four types, same thread: • Platform — calendar, contacts, photos, health, location, web, workspaces, memory banks, and more. Runs on your phone; you grant each permission. • Endpoint — HTTP APIs you define. • Lens — structured reasoning with on-device signed records. • Dynamic — tools the model can register during a session. FILES & MEMORY Thread-scoped workspaces for PDFs, code, images, and documents. Named memory banks across sessions. Knowledge graph with a 3D explorer, built offline from your content. VOICE & AGENTS Composer dictation and Talk mode (hands-free with native device voices; additional TTS providers coming). Switch models mid-thread, coordinate several agents with @mentions, or run parallel discussions. PLUGINS Install skills, tools, prompts, and presets from Git or an archive—without waiting for an app update. LOCAL-FIRST Chats, embeddings, workspace files, and settings stay on device. Direct connection to the endpoint you configure. Full export and import. Offline queue and background streaming. Sensitive capabilities require explicit OS permission.

About

Electron Flow

Read full description

Stop memorizing formulas. Start feeling the flow. Visualize invisible electrons through Liquid Glass UI and master KCL/KVL with Socratic AI guidance.

Screenshots

Reef AI4 screens
Electron Flow4 screens

Verdict

The call

The clearest difference is iOS requirement: Reef AI at 15.1 against Electron Flow's 17.0. 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.

Scorecard1 real difference · 5 level
Reef AI versus Electron Flow: the parameters behind the verdict, then further details
ParameterReef AIElectron Flow
PriceFreeFree
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size68 MB6 MB
Age rating17+4+
DeveloperAlexandru GhineaHANZ WONG

In-app purchases

None

Reef AI

No in-app purchases

None

Electron Flow

No in-app purchases

Questions

Is Reef AI free?
Reef AI is free to download, with no in-app purchases.
Is Electron Flow free?
Electron Flow is free to download, with no in-app purchases.
Do Reef AI or Electron Flow have ads?
Neither Reef AI nor Electron Flow shows ads.

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