Comparison

Ninja AI vs FieldSize

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

Head to head
About

Ninja AI

This AI assistant offers a dual experience with a chat agent for everyday tasks and an autonomous agent for complex projects. It supports numerous premium AI models for tasks like coding, content creation, research, and website building, boasting high-speed performance.

Highlights
  • Dual AI experience (Chat & Autonomous Agent)
  • Supports 40+ premium AI models
  • Autonomous project execution on its own computer
  • Blazing fast performance (up to 3000 tokens/sec)
  • Website building and deployment
  • Content creation (text, images, video, podcasts)
  • Code generation and debugging
  • File analysis and research
Features
Read full description

Meet Ninja AI, your All In One AI Assistant with 40 Premium Models • Ninja mode for everyday AI tasks • SuperNinja Agent for autonomous projects on its own computer Why Ninja AI • Dual AI Experience: • Ninja Chat Agent powered by GPT 5, Claude Sonnet, Gemini Pro, DeepSeek, Grok • SuperNinja Agent on its own computer for complex work • Blazing Fast Performance: • Up to 3000 tokens per second • Five to ten times faster than competitors • Parallel task execution with no waiting • Every AI Model You Need: • OpenAI GPT 5, GPT 4.1, DALL E 3 • Anthropic Claude 3.7 Sonnet and Haiku • Google Gemini 2.5 Pro and Flash • DeepSeek R1 and V3 • Amazon Nova Pro, Canvas and Reel • Meta Llama 4 Scout and Maverick • Plus FLUX, Mistral, Stable Diffusion and more SuperNinja Agent Capabilities • Build Complete Websites: • Describe your vision and SuperNinja codes and deploys your site with full functionality on its own computer • Create Business Tools: • Generate dashboards, spreadsheets, presentations and documents • Conduct Deep Research: • Get comprehensive reports with citations and insights • Generate Production Ready Code: • From single scripts to full applications Ninja Chat Agent Features • Answer Any Question: • Real time search or deep research on any topic • Write and Create Content: • Generate posts, emails, articles and marketing materials • Create Stunning Visuals: • AI images with DALL E 3, FLUX Pro, Imagen 4 Ultra, Amazon Nova Canvas, Stable Diffusion XL • Generate Videos: • Dazzling videos with Amazon Nova Reel • Turn Text into Podcasts: • One click conversion into high quality audio • Analyze Files: • Upload and analyze text, images, PDFs and reports • Code Generation and Debugging: • Create and debug code in Python, JavaScript, C++ and more • Automate Meeting Scheduling: • Connect Gmail and let Ninja schedule meetings • Built in Editor: • Workspace to create, refine and manage writing or code • Compare Mode: • View results from any two AI models side by side Perfect For • Developers accelerating development cycles • Entrepreneurs conducting market research and creating materials • Students building projects without coding experience • Researchers analyzing and synthesizing information • Content Creators generating multi format outputs • Business Professionals automating workflows Get Started Today • Experience Ninja mode for quick AI tasks and SuperNinja Agent on its own computer for full projects • Download now and transform how you work with AI Web App: https://super.myninja.ai/ Learn More: https://www.ninjatech.ai/ Terms: https://www.ninjatech.ai/terms-of-service

About

FieldSize

Features
Read full description

Measure and maintain your athletic fields with ease. Get sizes, measurements distances and re-marking predictions right on your phone. Weather, previous painting needs and even game schedules all help the app predict when you should head out and re-mark a field.

Screenshots

Ninja AI4 screens
FieldSize4 screens

Verdict

The call

The clearest difference is update cadence: Ninja AI at fortnightly against FieldSize's every 3 months. 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. Ninja AI sells 7 in-app purchases, starting at $5.00 per month and FieldSize sells 1 in-app purchase, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ninja AI ships an update fortnightly, FieldSize every 3 months. The most recent releases landed on September 8, 2026 and August 9, 2026 respectively.

Scorecard1 real difference · 9 level
Ninja AI versus FieldSize: the parameters behind the verdict, then further details
ParameterNinja AIFieldSize
PriceFreeFree
Rating4.0 (52 ratings) — better—
Positive reviews56.0% of reviews—
Number of ratings52 — better—
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size61 MB15 MB
Age rating12+4+
DeveloperNinjatech AI, IncChris Weed

Bugs and requests

Ninja AI

Reported bugs

2 issues
  • Crashes and freezes reported
  • Compatibility issues with older devices

Requested features

2 requests
  • Implement delete option for chat history
  • Add Chinese language support

FieldSize

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Ninja AI

Subscriptions7
  • Standard$5.001 Month
  • Pro$10.001 Month
  • Ultra$15.001 Month
Show 4 more
  • SuperNinja Standard$19.001 Month
  • SuperNinja Pro$29.001 Month
  • SuperNinja Ultra$49.001 Month
  • SuperNinja Max$149.001 Month
1 purchases

FieldSize

Subscriptions1
  • Yearly$24.991 Year

Questions

Is Ninja AI free?
Ninja AI is free to download, with in-app purchases available.
Is FieldSize free?
FieldSize is free to download, with in-app purchases available.
Do Ninja AI or FieldSize have ads?
Neither Ninja AI nor FieldSize shows ads.
Which is updated more often, Ninja AI or FieldSize?
Ninja AI ships an update fortnightly, and FieldSize every 3 months. Most recently, Ninja AI was updated on September 8, 2026 and FieldSize on August 9, 2026.

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