# シャドーイング Shadog vs スピフル

The clearest difference is review sentiment: シャドーイング Shadog at 70% against スピフル's 0%. シャドーイング Shadog also leads on device support (3 vs 1). スピフル's advantage is in-app purchases (none vs 3). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. シャドーイング Shadog sells 3 in-app purchases, starting at $22.99 per month. スピフル asks for nothing beyond the download.

シャドーイング Shadog ships an update every 11 days, スピフル fortnightly. Both last shipped on September 24, 2026.

## The numbers

| Metric | シャドーイング Shadog | スピフル |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (33 ratings)](https://appshunter.io/ios/app/id6504902019/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | **70.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 97 MB | 48 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Shadog LLC](https://appshunter.io/developer/1685605147) | [PROGRIT Inc.](https://appshunter.io/developer/1437876016) |

## What reviewers say

### シャドーイング Shadog

[App page](https://appshunter.io/ios/app/shadog/id6448691638)

Enhance your English listening skills with AI-powered shadowing. Get instant pronunciation feedback, identify weak spots, and practice with a vast library of materials. Achieve your language goals with personalized, daily practice.

**Highlights:** AI pronunciation feedback, Shadowing practice, Personalized learning paths, Extensive material library (500+ questions), Progress tracking, Daily practice reminders, Weakness-focused script generation

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadog | $22.99 | per month |
| Shadog 3ヶ月プラン | $59.99 | per 3 months |
| Shadog 1年プラン | $149.99 | per year |


### スピフル

[App page](https://appshunter.io/ios/app/id6504902019)

This app enhances English speaking skills through AI-powered oral composition and monologue training. It offers personalized feedback and practical business scenarios to improve fluency and expression, building on proven methodologies.

**Highlights:** AI scoring and feedback, Oral composition training, Monologue English conversation practice, Real-time発話 speed measurement, Extensive business例文 library, AI speech correction

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

**In-app purchases:** none


## Frequently asked questions

### Is シャドーイング Shadog free?

シャドーイング Shadog is free to download, with in-app purchases available.

### Is スピフル free?

スピフル is free to download, with no in-app purchases.

### Do シャドーイング Shadog or スピフル have ads?

Neither シャドーイング Shadog nor スピフル shows ads.

### Which is updated more often, シャドーイング Shadog or スピフル?

シャドーイング Shadog ships an update every 11 days, and スピフル fortnightly. Most recently, シャドーイング Shadog was updated on September 24, 2026 and スピフル on September 24, 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.*