DC Historic Sites vs Deep Time Audio Description
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DC Historic Sites
Explore Washington D.C.'s significant historic locations and spaces. This app is built upon the city's official inventory of sites recognized for their cultural heritage contributions.
- Learn about historic places
- Based on official city inventory
- Discover cultural heritage sites
- Information on preservation
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Learn about District of Columbia's important and irreplaceable historic places and spaces. DC Historic Sites is based on the DC Inventory of Historic Sites, the city's official list of properties deemed worthy of recognition and protection for their contribution to the cultural heritage of the city, the nation’s capital, and the nation. DC Historic Sites was developed by the DC Preservation League, Washington's only citywide nonprofit dedicated to the preservation, protection and enhancement of the historic resources of our nation's capital. www.dcpreservation.org
Deep Time Audio Description
Explore the Smithsonian Fossil Hall with a self-guided audio tour designed for blind and low-vision users. Learn about evolution, ecosystems, and the interconnectedness of life from its origins to the Age of Humans. Features include screen reader compatibility, alt text, and zoomable text.
- Screen Reader compatible
- Background contrast
- Alt text and captions
- Zoomable text
- Search feature
- Audio descriptions of exhibits
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Assistive technology for blind and low-vision users to explore the new Fossil Hall at the Smithsonian National Museum of Natural History through a self-guided tour. Discover how all life is connected–past, present, and future–to all other life and to the Earth itself. Learn more about evolution, ecosystems, and extinction from the beginning of life 3.7 billion years ago to the Age of Humans today. Features: • Screen Reader compatible • Background contrast • Alt text and captions for all images • Zoomable text • Search feature This app contains descriptive overviews of: • tactile models • iconic specimens such as T. rex • multimedia videos and interactives • content stories Download ahead of time to plan your visit, follow along in the gallery, or read afterwards. The app uses the accessibility features native to your phone. By downloading this mobile app, you agree to the Smithsonian’s Privacy Policy (http://si.edu/privacy) NOTE: WiFi is available in all Smithsonian museums.
Screenshots
Verdict
The clearest difference is update cadence: Deep Time Audio Description at every 6 days against DC Historic Sites's every 6 months. Deep Time Audio Description also leads on iOS requirement (11.0 vs 16.0). On price, rating, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for DC Historic Sites against 5.0 for Deep Time Audio Description. Both are backed by a comparable volume of ratings — 3 and 4 respectively.
DC Historic Sites ships an update every 6 months, Deep Time Audio Description every 6 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | DC Historic Sites | Deep Time Audio Description |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (4 ratings) |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 6 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Curatescape | Smithsonian Institution |
Customer experience
DC Historic Sites
Deep Time Audio Description
In-app purchases
DC Historic Sites
No in-app purchases
Deep Time Audio Description
No in-app purchases
Questions
Is DC Historic Sites free?
Is Deep Time Audio Description free?
Which has better reviews, DC Historic Sites or Deep Time Audio Description?
Do DC Historic Sites or Deep Time Audio Description have ads?
Which is updated more often, DC Historic Sites or Deep Time Audio Description?
Other comparisons
