# Science Now vs Trailer Shopper

The clearest difference is review sentiment: Trailer Shopper at 100% against Science Now's 43%. Trailer Shopper also leads on in-app purchases (none vs 3) and ads (none vs shown). Science Now's advantage is ratings volume (140 vs 1). On price, update cadence and device support there is nothing between them.

Both are free to download. Science Now sells 3 in-app purchases, starting at $0.99 per month. Trailer Shopper asks for nothing beyond the download.

Trailer Shopper holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Science Now has 140 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 43% of Science Now's written reviews are positive against 100% of Trailer Shopper's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Science Now | Trailer Shopper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (140 ratings)](https://appshunter.io/ios/app/science-now/id428269406/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trailer-shopper/id568456453/reviews)** |
| Number of ratings | **140** | 1 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Freemium | **Free** |
| Size | 69 MB | 2 MB |
| Requires iOS | 15.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [Trailer Shopper®](https://appshunter.io/developer/568456456) |

## What reviewers say

### Science Now

[App page](https://appshunter.io/ios/app/science-now/id428269406)

Stay updated with the latest scientific research and discoveries delivered directly to your mobile device. Explore space exploration, technological breakthroughs, and environmental data from leading organizations.

**Highlights:** Latest scientific research and discoveries, Space exploration and innovation news, Technological breakthroughs, Radiation readings and space weather, Data and imagery from NASA, NIST, NOAA

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $0.99 | per month |
| Space Weather | $4.99 | one-time |
| Remove Ads | $6.99 | one-time |


### Trailer Shopper

[App page](https://appshunter.io/ios/app/trailer-shopper/id568456453)

Discover and purchase new and used trailers from dealers and private sellers. Browse over 10,000 listings across the US with a user-friendly mobile interface.

**Highlights:** Discover new and used trailers, Browse listings by dealers/private sellers, 10,000+ new and used trailers, 2000+ dealers across US, All manufactured trailer types

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Science Now free?

Science Now is free to download, with in-app purchases available.

### Is Trailer Shopper free?

Trailer Shopper is free to download, with no in-app purchases.

### Which has better reviews, Science Now or Trailer Shopper?

Trailer Shopper is rated higher. Science Now averages 4.6 out of 5 from 140 ratings, while Trailer Shopper averages 5.0 from 1 ratings.

### Do Science Now or Trailer Shopper have ads?

Science Now shows ads; Trailer Shopper does not.

### Which is updated more often, Science Now or Trailer Shopper?

Science Now ships an update every 3 months, and Trailer Shopper every 3 months. Most recently, Science Now was updated on November 1, 2026 and Trailer Shopper on November 3, 2026.

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