# radian vs Velocity

The clearest difference is rating: Velocity at 5.0 against radian's 2.0. Velocity also leads on update cadence (every 2 days vs monthly). radian's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 16). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Velocity sells 3 in-app purchases, starting at $4.99 per 7 days. radian asks for nothing beyond the download.

Velocity holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

radian ships an update monthly, Velocity every 2 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | radian | Velocity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/radian/id593206526/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/velocity-speed-updown-video/id6743888971/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 6 MB | 23 MB |
| Requires iOS | **11.0** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tangy Laboratories Inc](https://appshunter.io/developer/1480011645) | [Nathan Johnson](https://appshunter.io/developer/1772979395) |

## What reviewers say

### radian

[App page](https://appshunter.io/ios/app/radian/id593206526)

Control a motion time-lapse device for DSLR or smartphone cameras. Create stunning panning, vertical, or still time-lapses. Requires the Radian device for operation.

**Highlights:** Motion time-lapse control, Panning time-lapses, Vertical time-lapses, Still time-lapses, DSLR camera integration, Smartphone camera integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Velocity

[App page](https://appshunter.io/ios/app/velocity-speed-updown-video/id6743888971)

Easily adjust video playback speed, from rapid timelapses to dramatic slow-motion, with a simple slider.  Export your edited videos in seconds without needing advanced editing skills.

**Highlights:** Adjust playback speed from 0.1x to 20x, Intuitive speed slider, Fast video processing, One-tap export, Create timelapses and slow-motion

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Velocity Weekly | $4.99 | per 7 days |
| Velocity Monthly | $15.99 | per month |
| Velocity Annual | $49.99 | per year |


## Frequently asked questions

### Is radian free?

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

### Is Velocity free?

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

### Which has better reviews, radian or Velocity?

Velocity is rated higher. radian averages 2.0 out of 5 from 4 ratings, while Velocity averages 5.0 from 5 ratings.

### Do radian or Velocity have ads?

Neither radian nor Velocity shows ads.

### Which is updated more often, radian or Velocity?

radian ships an update monthly, and Velocity every 2 days. Most recently, radian was updated on November 1, 2026 and Velocity on October 30, 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.*