# NMR Tutor vs ChemSpark

The clearest difference is in-app purchases: NMR Tutor at none against ChemSpark's 5. NMR Tutor also leads on ads (none vs shown) and rating (5.0 vs 4.6). ChemSpark's advantage is ratings volume (8 vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. ChemSpark sells 5 one-off in-app purchases. NMR Tutor asks for nothing beyond the download.

NMR Tutor holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ChemSpark has 8 ratings behind it against 1, so its average is the more settled of the two.

NMR Tutor ships an update fortnightly, ChemSpark monthly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | NMR Tutor | ChemSpark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nmr-tutor/id785450176/reviews)** | [4.6 (8 ratings)](https://appshunter.io/ios/app/chemspark-chemistry-practice/id6746169230/reviews) |
| Number of ratings | 1 | **8** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 43 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Lojas Software Corp](https://appshunter.io/developer/1799458054) |

## 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


### ChemSpark

[App page](https://appshunter.io/ios/app/chemspark-chemistry-practice/id6746169230)

Master chemistry concepts and prepare for exams with this comprehensive study tool. It offers a dynamic way to test knowledge across various topics, featuring diverse question types, visual learning aids, and detailed feedback to track progress and improve understanding.

**Highlights:** Extensive question bank with varying difficulty, Multiple question types (multiple-choice, fill-in-the-blank), Visual learning aids with images and diagrams, Detailed feedback and answer explanations, Structured learning by subject and topic, Progress tracking and score monitoring, Interactive testing interface

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Test Tube of Hints (25) | $0.99 | one-time |
| Combustion Skips (5) | $0.99 | one-time |
| Atomic Skips (15) | $1.99 | one-time |
| Beaker of Hints (60) | $2.99 | one-time |
| Flask of Hints (150) | $4.99 | one-time |


## Frequently asked questions

### Is NMR Tutor free?

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

### Is ChemSpark free?

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

### Which has better reviews, NMR Tutor or ChemSpark?

NMR Tutor is rated higher. NMR Tutor averages 5.0 out of 5 from 1 ratings, while ChemSpark averages 4.6 from 8 ratings.

### Do NMR Tutor or ChemSpark have ads?

ChemSpark shows ads; NMR Tutor does not.

### Which is updated more often, NMR Tutor or ChemSpark?

NMR Tutor ships an update fortnightly, and ChemSpark monthly. Most recently, NMR Tutor was updated on November 1, 2026 and ChemSpark on November 5, 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.*