# Tearline by NGA vs DeepThink

The clearest difference is price: Tearline by NGA at Free against DeepThink's $2.99. Tearline by NGA also leads on rating (3.6 vs 3.0) and ratings volume (9 vs 2). DeepThink's advantage is update cadence (every 2 days vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

Tearline by NGA is free to download; DeepThink costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tearline by NGA holds the better App Store score, 3.6 against 3.0. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

Tearline by NGA ships an update every 3 months, DeepThink every 2 days. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Tearline by NGA | DeepThink |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/tearline-by-nga/id1201916437/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/deepthink/id6741049434/reviews) |
| Number of ratings | **9** | 2 |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | **Free** | Paid |
| Size | 17 MB | 21 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | +4 |
| Developer | [National Geospatial-Intelligence Agency](https://appshunter.io/developer/935822508) | [3DTOPO Inc.](https://appshunter.io/developer/306248371) |

## What reviewers say

### Tearline by NGA

[App page](https://appshunter.io/ios/app/tearline-by-nga/id1201916437)

Access open-source intelligence on strategic, economic, and humanitarian topics. Review articles chronologically or by category, with detailed overviews and downloadable structured data. Includes infographics, visualizations, and satellite imagery analysis.

**Highlights:** Open access intelligence content, Chronological and categorized article review, Analytic overview and future focus highlights, Downloadable structured data, Infographics and visualizations, Satellite imagery analysis

**Features:** Vision Pro support

**In-app purchases:** none


### DeepThink

[App page](https://appshunter.io/ios/app/deepthink/id6741049434)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tearline by NGA free?

Tearline by NGA is free to download, with no in-app purchases.

### Is DeepThink free?

DeepThink costs $2.99, with no in-app purchases.

### Which has better reviews, Tearline by NGA or DeepThink?

Tearline by NGA is rated higher. Tearline by NGA averages 3.6 out of 5 from 9 ratings, while DeepThink averages 3.0 from 2 ratings.

### Do Tearline by NGA or DeepThink have ads?

Neither Tearline by NGA nor DeepThink shows ads.

### Which is updated more often, Tearline by NGA or DeepThink?

Tearline by NGA ships an update every 3 months, and DeepThink every 2 days. Most recently, Tearline by NGA was updated on October 10, 2026 and DeepThink on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*