DeepThink vs Kashf Lens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Kashf Lens
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Kashf Lens turns your iPhone into a multi-sensor exploration tool. Visualize real-time data from three built-in sensors - magnetometer, microphone, and camera - presented through a sleek, immersive interface. IMPORTANT: Kashf Lens reads raw sensor data from your iPhone's hardware. It is NOT a professional inspection device and does NOT reliably locate objects inside walls. Sensor readings are influenced by many environmental factors and should be treated as exploratory data, not definitive results. WHAT THE SENSORS MEASURE: MAGNETOMETER Reads magnetic field intensity in microteslas using your iPhone's built-in magnetometer. Displays real-time fluctuations as you move your device near surfaces. Magnetic field changes may be caused by nearby electronics, metal structures, Earth's field variations, or other environmental sources. Uses Kalman filtering for smoother readings. SOUND FREQUENCY ANALYZER Records audio from your iPhone's microphone when you tap a surface. Analyzes the frequency spectrum using FFT (Fast Fourier Transform) to compare sound characteristics. Different surface materials produce different acoustic responses. CAMERA SURFACE INSPECTOR Uses your iPhone's camera with image processing to highlight visual textures, edges, and surface patterns in real time. Applies saliency detection algorithms to identify areas of visual interest on surfaces. FEATURES: - Real-time sensor data visualization - Room-by-room session logging - Advanced haptic feedback (Core Haptics) - Dark, immersive interface optimized for OLED - 100% offline - no data leaves your device - Educational sensor exploration WHO USES KASHF LENS: - Curious minds exploring how phone sensors work - Students learning about magnetism and acoustics - DIY hobbyists experimenting with sensor readings - Paranormal enthusiasts and Ruqyah practitioners - Anyone interested in environmental sensor data Results vary based on device model, environmental conditions, and surface materials. Kashf Lens is an educational sensor exploration app. It does not replace professional tools or inspection equipment. Your data never leaves your device. Full privacy, always offline. Download free today.
Screenshots
Verdict
The clearest difference is price: Kashf Lens at Free against DeepThink's $2.99. Kashf Lens also leads on iOS requirement (16.0 vs 18.0). DeepThink's advantage is update cadence (every 2 days vs weekly). On 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
Kashf Lens is free to download; DeepThink costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DeepThink ships an update every 2 days, Kashf Lens weekly. The most recent releases landed on September 29, 2026 and September 16, 2026 respectively.
| Parameter | DeepThink | Kashf Lens |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | +4 | 4+ |
| Developer | 3DTOPO Inc. | Azziz Mimouni |
In-app purchases
DeepThink
No in-app purchases
Kashf Lens
No in-app purchases









