# Tempus vs GRFX

The clearest difference is price: Tempus at Free against GRFX's $6.99. Tempus also leads on iOS requirement (13.0 vs 17.0). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Tempus is free to download; GRFX costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Tempus against 4.6 for GRFX. Both are backed by a comparable volume of ratings — 9 and 11 respectively. Written reviews are what separate them: 83% of Tempus's written reviews are positive against 78% of GRFX's.

Tempus ships an update every 5 weeks, GRFX monthly. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Tempus | GRFX |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/tempus-delay-calculator/id1488364362/reviews) | [4.6 (11 ratings)](https://appshunter.io/ios/app/grfx-granular-effects/id6745477065/reviews) |
| Number of ratings | 9 | **11** |
| Positive reviews | **83.3% of reviews** | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 117 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marcos Kohler](https://appshunter.io/developer/1024379665) | [Imaginando Lda](https://appshunter.io/developer/895445015) |

## What reviewers say

### Tempus

[App page](https://appshunter.io/ios/app/tempus-delay-calculator/id1488364362)

Calculate delay times and sample re-pitch amounts with a tap-tempo metronome. Preview delay sounds and determine BPM changes for your DAW. This tool helps musicians fine-tune audio effects.

**Highlights:** Tap-tempo metronome, Specify beat count for metronome, View and preview delay times, Calculate sample re-pitch amounts, Calculate BPM changes, Supports Re-Pitch Warp modes

**In-app purchases:** none


### GRFX

[App page](https://appshunter.io/ios/app/grfx-granular-effects/id6745477065)

Transform ordinary audio into unique sonic textures, evolving soundscapes, and rhythmic glitches. This app offers precise control over sound manipulation with a unique pitch controller, multiple LFOs, and a flexible multi-effect chain. Create complex and immersive audio transformations in real-time.

**Highlights:** Granular engine for textures and rhythms, Harmonic Triangle pitch controller, Multi-effect chain with probabilistic routing, Four self-modulating LFOs, Real-time audio sculpting, AUv3 plugin and standalone app

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tempus free?

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

### Is GRFX free?

GRFX costs $6.99, with no in-app purchases.

### Which has better reviews, Tempus or GRFX?

Tempus and GRFX are both rated 4.6 out of 5 on the App Store, from 9 and 11 ratings respectively.

### Do Tempus or GRFX have ads?

Neither Tempus nor GRFX shows ads.

### Which is updated more often, Tempus or GRFX?

Tempus ships an update every 5 weeks, and GRFX monthly. Most recently, Tempus was updated on October 7, 2026 and GRFX on October 12, 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.*