Comparison

DeepThink vs Compass Retro

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

Head to head
About

DeepThink

This AI assistant operates entirely on your device, offering private and unlimited conversations without needing an internet connection. It utilizes a self-reflection model for accurate reasoning and provides formatted output for easy use. Share with family for a secure, offline thinking partner.

Highlights
  • Complete privacy on-device processing
  • Offline functionality
  • Unlimited conversations
  • Markdown and LaTeX rendering
  • Full chat history
  • Family Sharing up to 6 members
  • AI self-reflection for thoughtful responses
Features
Read full description

Transform your device into a personal AI assistant that works completely offline. DeepThink runs entirely on your device, giving you unlimited conversations with absolute privacy – no internet required and we never transmit your messages anywhere. One purchase, unlimited access. No subscriptions, no accounts, no API keys needed. Share with up to six family members through Family Sharing. While we may transition to a subscription model in the future, anyone who purchases now will have lifetime access to the app at no additional cost. DeepThink is powered by DeepSeek R-1, a groundbreaking AI model distilled and optimized for mobile devices. R-1 represents a new generation of AI assistant that carefully performs internal self-reflection and reasoning before responding. Until recently, even leading AI services would generate answers without proper reasoning steps. This led to errors on seemingly simple questions like "Is 9.11 greater than 9.9" and "How many letter R's are in the word Strawberry". DeepThink, through R-1's methodical reasoning process, tackles these examples and much more with accuracy. Key Features: • Complete privacy – all processing happens on your device • Works offline – think with AI anywhere, anytime • Unlimited conversations – no usage limits or extra fees • Output has formatted Markdown and LaTeX rendering • Full chat history with conversation review and resume • Copy responses as rich text or Markdown • Family Sharing enabled – share with up to 6 family members • Thoughtful responses through AI self-reflection • Simple temperature controls to fine-tune responses • Advanced settings for power users While DeepThink may not beat online enterprise AI services for many uses, it excels at being your offline and private thinking partner. The rare occasions where it needs a reset are easily handled with the stop button or by adjusting temperature settings. Coming Soon to free updates: • Additional AI models • Faster performance • Editable context Like all AI systems, DeepThink may occasionally make mistakes. Users should verify important information and are responsible for how they use the AI's output. We believe in being transparent about both capabilities and limitations while delivering genuine value through private, offline AI assistance. We're passionate about making DeepThink better with each update. Your feedback and suggestions play a crucial role in shaping future versions – we read every comment and feature request. Join us in evolving DeepThink into an even more capable offline AI companion. Share your thoughts with us @3DTOPO on X (formally Twitter), through App Store reviews or support contact information. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Additional Terms of Use: Any user assumes full responsibility for any and all use of information provided by DeepThink. The app's AI-generated responses are provided "as is" without any warranties of accuracy or fitness for any particular purpose. Any user must independently verify any information provided by the app before relying on it.

About

Compass Retro

Experience a photorealistic retro compass that transforms your device into an intuitive navigation tool. It offers a full-screen analog display with smooth needle alignment to true north. Choose between light and dark themes for a visually appealing experience.

Highlights
  • Full-screen photorealistic display
  • Smooth true north alignment
  • Intuitive analog instrument feel
  • Light and dark theme support
  • Purpose-built for reliable navigation
Features
Read full description

A full-screen, photo-realistic retro compass fills your display, recreating the look and feel of a classic analog instrument. When you hold your device flat, the needle smoothly aligns to true north, turning your phone into a dedicated, intuitive navigation tool. The app supports both light and dark themes, each with its own carefully crafted photograph: in light mode, the compass rests in bright, daytime lighting; in dark mode, it's bathed in the warm glow of an evening sunset. This app is purpose-built for one thing only-being a beautiful, reliable compass-with no extra screens, menus, or distracting features.

Screenshots

DeepThink4 screens
Compass Retro4 screens

Verdict

The call

The clearest difference is price: Compass Retro at Free against DeepThink's $2.99. Compass Retro also leads on rating (5.0 vs 3.0) and iOS requirement (15.6 vs 18.0). DeepThink's advantage is in-app purchases (none vs 1) and ads (none vs shown). On ratings volume 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

Compass Retro is free to download; DeepThink costs $2.99 up front. Compass Retro sells 1 one-off in-app purchase. DeepThink asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Compass Retro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

DeepThink ships an update every 2 days, Compass Retro every 8 days. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
DeepThink versus Compass Retro: the parameters behind the verdict, then further details
ParameterDeepThinkCompass Retro
Price$2.99Free — better
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 2 days — betterEvery 8 days
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.6 — better
Further details — not scored
Size21 MB36 MB
Age rating+44+
Developer3DTOPO Inc.akira ohmachi

Customer experience

DeepThink

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Compass Retro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

DeepThink

No in-app purchases

1 purchases

Compass Retro

One-time1
  • Remove Ads$1.99

Questions

Is DeepThink free?
DeepThink costs $2.99, with no in-app purchases.
Is Compass Retro free?
Compass Retro is free to download, with in-app purchases available.
Which has better reviews, DeepThink or Compass Retro?
Compass Retro is rated higher. DeepThink averages 3.0 out of 5 from 2 ratings, while Compass Retro averages 5.0 from 1 ratings.
Do DeepThink or Compass Retro have ads?
Compass Retro shows ads; DeepThink does not.
Which is updated more often, DeepThink or Compass Retro?
DeepThink ships an update every 2 days, and Compass Retro every 8 days. Most recently, DeepThink was updated on September 29, 2026 and Compass Retro on October 11, 2026.

Other comparisons