# inspire hep browser vs Feynman WTF

The clearest difference is in-app purchases: inspire hep browser at none against Feynman WTF's 2. inspire hep browser also leads on iOS requirement (11.0 vs 15.1). Feynman WTF's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Feynman WTF sells 2 in-app purchases, starting at $10.00 per month. inspire hep browser asks for nothing beyond the download.

inspire hep browser ships an update every 2 months, Feynman WTF weekly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | inspire hep browser | Feynman WTF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/inspire-hep-browser/id1435865611/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 37 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuji Tachikawa](https://appshunter.io/developer/378764358) | [Vrushal Kapadnis](https://appshunter.io/developer/1830846117) |

## What reviewers say

### inspire hep browser

[App page](https://appshunter.io/ios/app/inspire-hep-browser/id1435865611)

This app facilitates easy PDF downloads and reading for inspirehep.net and arXiv.org. It offers iCloud synchronization across Apple devices, making it a convenient tool for high energy physicists.

**Highlights:** One-click PDF downloads, Read arXiv and new papers, iCloud sync across devices, Supports inspirehep.net, Supports arXiv.org

**Features:** macOS Compatibility

**In-app purchases:** none


### Feynman WTF

[App page](https://appshunter.io/ios/app/feynman-wtf/id6749510148)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $10.00 | per month |
| Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is inspire hep browser free?

inspire hep browser is free to download, with no in-app purchases.

### Is Feynman WTF free?

Feynman WTF is free to download, with in-app purchases available.

### Do inspire hep browser or Feynman WTF have ads?

Neither inspire hep browser nor Feynman WTF shows ads.

### Which is updated more often, inspire hep browser or Feynman WTF?

inspire hep browser ships an update every 2 months, and Feynman WTF weekly. Most recently, inspire hep browser was updated on November 2, 2026 and Feynman WTF on November 5, 2026.

---

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