CodingKB vs OpenCone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CodingKB
This app provides a specialized keyboard designed to streamline coding on mobile devices. It eliminates the need to frequently switch between character sets, offering direct access to essential symbols and numbers.
- Simplified coding workflow
- Direct access to characters, numbers, and punctuation
- Reduced need for keyboard switching
- Enhanced mobile coding efficiency
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Tired of constantly switching between characters, numbers, and punctuation while coding on your phone? CodingKB is here to simplify your workflow and set you free!
OpenCone
This app transforms your iPhone or iPad into a powerful RAG system. It allows you to import various document types for on-device extraction, embedding, and semantic search. Connect to your OpenAI and Pinecone accounts to build a private knowledge base for real-time, citation-backed answers.
- Multi-format document import (PDF, DOCX, TXT, code, etc.)
- On-device OCR for image text recognition
- Semantic search with streaming answers
- Real-time citations and metadata filtering
- Support for GPT-5 and other advanced models
- Secure credential management in Keychain
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Transform your iPhone and iPad into a self-contained RAG powerhouse. Import PDFs, Word docs, code, images, and text into a secure sandbox - extraction, embedding, and semantic search happen with zero lock-in. Point the app at your OpenAI and Pinecone credentials for a private knowledge base that streams grounded, citation-backed answers in real time. COMPLETE DOCUMENT PIPELINE • Multi-format extraction: PDF, DOCX, TXT, HTML, Markdown, JSON, CSV, and code • Apple Vision OCR for on-device image text recognition • MIME-aware chunking with configurable size and overlap • Security-scoped bookmarks preserve file access across launches • Deduplication by path, size, and timestamp fingerprinting • Live progress tracking with structured logs for every phase SEMANTIC SEARCH WITH STREAMING • One-tap queries embed prompts and run similarity search against Pinecone • Server-Sent Events deliver incremental answer deltas—no blocking spinners • Citations reference exact chunks with document names and source metadata • Metadata filters scope searches to specific documents or custom tags • Conversation memory keeps recent turns in context for coherent follow-ups GPT-5 REASONING MODEL SUPPORT • Choose between standard models (GPT-4o, GPT-4o mini) or GPT-5 • Dynamic controls: reasoning effort for GPT-5, temperature/top-p for others • Unified Responses API with conditional parameterization RESILIENCE & OBSERVABILITY • Pinecone health checks surface outages with dismissible banners • Circuit breaker prevents hammering unhealthy hosts • Watchdog timers catch stalled streams and trigger fallbacks • Per-search trace IDs and granular log levels make every stage inspectable • Error banners auto-dismiss after 8 seconds with user-friendly summaries SETTINGS & PRIVACY • Credentials in Keychain via SecureSettingsStore • Release guardrails prevent accidental key leaks • Model selection, chunk parameters, top-k defaults, metadata presets persist • Reset control wipes credentials and history without reinstalling • Guided onboarding validates API keys before unlocking main interface POLISHED SWIFTUI EXPERIENCE • Theme manager with alternate icons and dynamic color schemes • Reactive MVVM-S architecture decouples views from business logic • Async/await throughout keeps UI responsive during heavy operations • Design system components ensure consistency across all tabs Whether building surgical references, legal research corpora, or personal knowledge vaults, OpenCone delivers production-grade RAG without vendor dashboards or billing surprises.
Screenshots
Verdict
The clearest difference is price: OpenCone at Free against CodingKB's $1.99. CodingKB's advantage is chart position (#153 vs unranked). On rating, ratings volume, update cadence 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
OpenCone is free to download; CodingKB costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for CodingKB against 5.0 for OpenCone. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
CodingKB ships an update every 6 months, OpenCone every 5 months. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.
| Parameter | CodingKB | OpenCone |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #153 — better | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.1 | 17.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 杰 瓮 | Gunnar Hostetler |
Customer experience
CodingKB
OpenCone
In-app purchases
CodingKB
No in-app purchases
OpenCone
No in-app purchases









