NMR Tutor vs Improv ACT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NMR Tutor
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.
- 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
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NMR Tutor is an interactive introduction to NMR data acquisition and signal processing. Use simulated free induction decays (FIDs) and spectra to explore how time-domain NMR signals become frequency-domain spectra. Adjust peak positions, decay, noise, apodization, zero filling, phase behavior, and common acquisition artifacts, then see the effect immediately in the FID and final spectrum. The app displays real and imaginary FID channels before and after processing, together with the resulting spectrum after Fourier transformation. A live signal-to-noise (S/N) measurement updates as you adjust noise, scan averaging, apodization, FID artifacts, and shimming, making processing tradeoffs easy to compare. Apply zero filling to see how digital interpolation changes the appearance of the spectrum without adding new measured data. You can also introduce common receiver or acquisition faults into the FID and observe the artifacts that appear after processing. As an advanced example, add spin-spin coupling to create an AB coupling pattern, then move the peaks or change the coupling strength to compare AB behavior with an AX spin system. Charts retain every data point and support pan, zoom, phase-pivot dragging, graph audio, sharing and export, and external displays. Optimized Metal and Accelerate processing keeps high-resolution chart and shimming interactions responsive. Adaptive layouts and larger accessibility text make the workspace easier to use on iPhone, iPad, and Mac. Open one-dimensional JEOL, Bruker and Varian FID datasets directly. Inspect the acquired real and imaginary channels, then apply apodization, zero filling, first-point scaling, and zero- and first-order phase correction to your own data.
Improv ACT
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Improv ACT - 1-3人用即興劇練習用配役ツール Improv ACTは、1人から3人の演者を対象にした、即興劇配役アプリです。あなたが新たな舞台での主役を目指すアスリートであろうと、古代の恐竜が好きな学生であろうと、Improv ACTがあなたに独自の役割を提供します。 Improv ACTは、あなたの演技力を試すための多様なキャラクターセットを持っています。それぞれのキャラクターは、さまざまな背景や特徴を持っています。演じるキャラクターはランダムに選ばれ、あなたにはそれぞれの配役を輝かせるアピールが求められます。 即興劇は1分・2分・3分・5分・10分で設定可能な便利なタイマー機能で管理できます。パフォーマンス時間の制限により、あなたのクリエイティビティを最大限に引き出す訓練を行うことができます。 シナリオはあなた次第です。Improv ACTは配役に焦点を当てていますので、あなたのキャラクターがどのような場面にでも対応できるように訓練してください。 Improv ACTで舞台に立ち、あなたのストーリーテリングの技術を磨き、あなたの演技力を新たな高みに引き上げましょう。 Improv ACTをダウンロードして、improve your ACT!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | NMR Tutor | Improv ACT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim E. Burrow | Keisuke Nakashima |
In-app purchases
NMR Tutor
No in-app purchases
Improv ACT
No in-app purchases





