# Inkdrift vs Spark AI tutor

The clearest difference is in-app purchases: Inkdrift at none against Spark AI tutor's 1. Spark AI tutor's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Spark AI tutor sells 1 in-app purchase, starting at $9.99 per month. Inkdrift asks for nothing beyond the download.

Inkdrift ships an update every 4 days, Spark AI tutor every 6 days. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Inkdrift | Spark AI tutor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/inkdrift-graded-reader/id6760686791/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | Free | — |
| Size | 46 MB | 45 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Andrew Stromme LLC](https://appshunter.io/developer/1188928700) | [Ahmad Mahfouz](https://appshunter.io/developer/1896611869) |

## What reviewers say

### Inkdrift

[App page](https://appshunter.io/ios/app/inkdrift-graded-reader/id6760686791)

This app offers a distraction-free reading experience for language learners. Instantly get contextual definitions by tapping words or full sentence translations by holding them, all within the text. It includes built-in stories and allows importing your own EPUB files to build reading habits.

**Highlights:** Instant contextual definitions, Full sentence translations, EPUB file import, Built-in graded stories, Daily reading timers, Reading streak tracking, Cumulative reading badges

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

**In-app purchases:** none


### Spark AI tutor

[App page](https://appshunter.io/ios/app/spark-ai-tutor/id6768868521)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| spark | $9.99 | per month |


## Frequently asked questions

### Is Inkdrift free?

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

### Is Spark AI tutor free?

Spark AI tutor is free to download, with in-app purchases available.

### Do Inkdrift or Spark AI tutor have ads?

Neither Inkdrift nor Spark AI tutor shows ads.

### Which is updated more often, Inkdrift or Spark AI tutor?

Inkdrift ships an update every 4 days, and Spark AI tutor every 6 days. Most recently, Inkdrift was updated on October 2, 2026 and Spark AI tutor on October 13, 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.*