# ToneDetector Lite vs navitusStudyGuides

The clearest difference is in-app purchases: ToneDetector Lite at none against navitusStudyGuides's 10. navitusStudyGuides's advantage is update cadence (every 3 months vs every 30 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. navitusStudyGuides sells 10 one-off in-app purchases. ToneDetector Lite asks for nothing beyond the download.

ToneDetector Lite ships an update every 30 months, navitusStudyGuides every 3 months. The most recent releases landed on July 4, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | ToneDetector Lite | navitusStudyGuides |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tonedetector-lite/id550854681/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 28 MB | 44 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jian Cheng](https://appshunter.io/developer/495002823) | [NAVITUS TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1293616779) |

## What reviewers say

### ToneDetector Lite

[App page](https://appshunter.io/ios/app/tonedetector-lite/id550854681)

Practice and master Mandarin Chinese tones with instant visual feedback. Compare your pronunciation's pitch contours to sample sounds to improve accuracy and reduce accent.

**Highlights:** Instant tone contour detection, Visual pitch shape comparison, Practice Mandarin tonal syllables, Covers hundreds of base and tonal syllables, Assess tone perception ability, Sample sounds for comparison

**Features:** macOS Compatibility

**In-app purchases:** none


### navitusStudyGuides

[App page](https://appshunter.io/ios/app/navitusstudyguides/id1551972506)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CBSE STD V | $3.99 | one-time |
| CBSE STD VI | $8.99 | one-time |
| CBSE STD VII | $9.99 | one-time |
| CBSE STD VIII | $12.99 | one-time |
| CBSE STD IX | $16.99 | one-time |
| CBSE STD X | $25.99 | one-time |
| CBSE STD XI(SCI) | $33.99 | one-time |
| CBSE STD XI(COMM) | $33.99 | one-time |
| CBSE STD XII(SCI) | $42.99 | one-time |
| CBSE STD XII(COMM) | $42.99 | one-time |


## Frequently asked questions

### Is ToneDetector Lite free?

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

### Is navitusStudyGuides free?

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

### Do ToneDetector Lite or navitusStudyGuides have ads?

Neither ToneDetector Lite nor navitusStudyGuides shows ads.

### Which is updated more often, ToneDetector Lite or navitusStudyGuides?

ToneDetector Lite ships an update every 30 months, and navitusStudyGuides every 3 months. Most recently, ToneDetector Lite was updated on July 4, 2026 and navitusStudyGuides on September 9, 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.*