Comparison

OneLLM vs BigWrite Markdown

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

Head to head
About

OneLLM

This app offers advanced AI capabilities with both cloud and local processing for privacy and performance. It includes features like offline OCR, voice-to-text, password generation, and QR code scanning. Developers can customize and load thousands of models from Hugging Face.

Highlights
  • Dual AI engine (cloud & local)
  • Offline OCR document scanning
  • Offline voice-to-text transcription
  • Password generator & QR code scanner
  • Developer Mode for custom LLM loading
  • API integration (OpenAI, Claude)
  • Parameter tuning for LLMs
Features
Read full description

Local AI. Online models. Your computer, within reach. OneLLM brings everyday AI and your computer’s agents into one workspace on iPhone and iPad. CHOOSE HOW YOU CHAT Download a compatible model for on-device, offline chat, or use your own credentials with supported online providers. Connect to Ollama or OpenClaw on a reachable server. Different tasks call for different models. BIGGER LOCAL MODELS An optional 35-billion-parameter MoE package uses expert streaming with about 3B active parameters. Smaller text and vision models are also available. Model capability, speed and memory needs vary by device. YOUR ONELLM OFFICE, ON YOUR PHONE Pair with a compatible OneLLM Office computer using its connection code. Continue a conversation, choose an available local or online model, follow task progress and respond to approvals. Open task files from a separate Files view. The desktop preview must remain running and reachable; desktop release availability may vary. OPENCODE MOBILE CONNECTOR Connect to OpenCode on your computer from iOS. Continue sessions, choose models and agents, browse files, review changes and respond to permissions. Scan the matching connection code or enter the service address. DEEPSEEK HARNESS CONNECTION Keep DS Harness conversations and workspaces close. Send messages and supported attachments, follow agent activity and continue from your phone. Use the DS Harness connection code in its matching module. PHOTOS, FILES AND VOICE See image previews in chat, check attachments before sending and remove them with a tap. English voice input uses bundled local transcription. Notes and on-device text recognition are also included. Local models require a separate download, storage and compatible hardware. The optional 35B package needs about 16.6 GB of storage; 12 GB RAM is recommended. Remote connections require a running computer and a reachable trusted LAN, Tailscale network or supported secure service address. Computer services use the model accounts configured there. Direct online chat requires your own provider credentials; provider subscriptions and API charges are not included. Review AI output before using it.

About

BigWrite Markdown

Features
Read full description

This is the biggest update yet, with loads of new features.

Screenshots

OneLLM4 screens
BigWrite Markdown4 screens

Verdict

The call

The clearest difference is price: OneLLM at Free against BigWrite Markdown's $14.99. OneLLM also leads on iOS requirement (16.4 vs 18.2). On update cadence, 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

OneLLM is free to download; BigWrite Markdown costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OneLLM ships an update fortnightly, BigWrite Markdown every 3 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
OneLLM versus BigWrite Markdown: the parameters behind the verdict, then further details
ParameterOneLLMBigWrite Markdown
PriceFree — better$14.99
Rating4.5 (29 ratings) — better—
Positive reviews55.6% of reviews—
Number of ratings29 — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.4 — better18.2
Further details — not scored
Size145 MB15 MB
Age rating17+4+
DeveloperESOTECH LtdDavid Johnson

In-app purchases

None

OneLLM

No in-app purchases

None

BigWrite Markdown

No in-app purchases

Questions

Is OneLLM free?
OneLLM is free to download, with no in-app purchases.
Is BigWrite Markdown free?
BigWrite Markdown costs $14.99, with no in-app purchases.
Do OneLLM or BigWrite Markdown have ads?
Neither OneLLM nor BigWrite Markdown shows ads.
Which is updated more often, OneLLM or BigWrite Markdown?
OneLLM ships an update fortnightly, and BigWrite Markdown every 3 weeks. Most recently, OneLLM was updated on November 8, 2026 and BigWrite Markdown on October 30, 2026.

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