# NMR Tutor vs Improv ACT

The clearest difference is update cadence: NMR Tutor at fortnightly against Improv ACT's every 13 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NMR Tutor ships an update fortnightly, Improv ACT every 13 months. The most recent releases landed on August 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | NMR Tutor | Improv ACT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nmr-tutor/id785450176/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 13 months |
| Monetization | Free | — |
| Size | 7 MB | 2 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Keisuke Nakashima](https://appshunter.io/developer/1691259083) |

## What reviewers say

### NMR Tutor

[App page](https://appshunter.io/ios/app/nmr-tutor/id785450176)

Explore NMR data acquisition and signal processing with interactive simulations. Adjust parameters like noise, apodization, and phase to observe immediate effects on FID and spectra. Learn about common artifacts and advanced concepts like spin-spin coupling.

**Highlights:** Interactive FID and spectra simulations, Adjustable peak positions and decay, Noise and apodization control, Zero filling and phase correction, Simulate acquisition artifacts, Explore spin-spin coupling

**Features:** Vision Pro support

**In-app purchases:** none


### Improv ACT

[App page](https://appshunter.io/ios/app/improv-act/id6455836199)

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

**In-app purchases:** none


## Frequently asked questions

### Is NMR Tutor free?

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

### Is Improv ACT free?

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

### Do NMR Tutor or Improv ACT have ads?

Neither NMR Tutor nor Improv ACT shows ads.

### Which is updated more often, NMR Tutor or Improv ACT?

NMR Tutor ships an update fortnightly, and Improv ACT every 13 months. Most recently, NMR Tutor was updated on August 8, 2026 and Improv ACT on September 14, 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.*