# Between the Lines Level2 Lt HD vs Inference Ace

The clearest difference is review sentiment: Inference Ace at 89% against Between the Lines Level2 Lt HD's 0%. Inference Ace also leads on device support (3 vs 1) and iOS requirement (12.2 vs 14.0). Between the Lines Level2 Lt HD's advantage is in-app purchases (none vs 3). On price, update cadence and ads there is nothing between them.

Both are free to download. Inference Ace sells 3 one-off in-app purchases. Between the Lines Level2 Lt HD asks for nothing beyond the download.

Between the Lines Level2 Lt HD ships an update every 6 months, Inference Ace every 7 months. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Between the Lines Level2 Lt HD | Inference Ace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (21 ratings)](https://appshunter.io/ios/app/inference-ace/id866920724/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | 0.0% of reviews | **88.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 219 MB | 22 MB |
| Requires iOS | 14.0 | **12.2** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hamaguchi Learning & Development, LLC](https://appshunter.io/developer/460288922) | [Janine Toole](https://appshunter.io/developer/839832427) |

## What reviewers say

### Between the Lines Level2 Lt HD

[App page](https://appshunter.io/ios/app/between-the-lines-level2-lt-hd/id574723058)

Practice interpreting social cues like vocal intonation, facial expressions, and body language through interactive photos, voices, and video clips. This app helps older students understand non-literal communication, including idioms and slang, in a dynamic, engaging way.

**Highlights:** Interpreting vocal intonation, Analyzing facial expressions, Understanding body language, Recognizing idiomatic expressions, Practicing perspective-taking, Progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Inference Ace

[App page](https://appshunter.io/ios/app/inference-ace/id866920724)

This app helps children in grades 2-5 improve their reading comprehension by teaching inference skills step-by-step. It uses a game-like environment with over 450 examples and a reward center to keep kids engaged. Detailed reporting is available for up to 10 students.

**Highlights:** Step-by-step inference skill building, Game-like environment with reward center, Over 450 examples designed by teachers, Detailed reporting for multiple students, Incremental learning with unlocked levels, Guided learning for reduced frustration

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to 2 Players | $1.99 | one-time |
| Inference Ace: Buy All Levels | $2.99 | one-time |
| Upgrade to 10 Players | $2.99 | one-time |


## Frequently asked questions

### Is Between the Lines Level2 Lt HD free?

Between the Lines Level2 Lt HD is free to download, with no in-app purchases.

### Is Inference Ace free?

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

### Do Between the Lines Level2 Lt HD or Inference Ace have ads?

Neither Between the Lines Level2 Lt HD nor Inference Ace shows ads.

### Which is updated more often, Between the Lines Level2 Lt HD or Inference Ace?

Between the Lines Level2 Lt HD ships an update every 6 months, and Inference Ace every 7 months. Most recently, Between the Lines Level2 Lt HD was updated on October 16, 2026 and Inference Ace on October 15, 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.*