# Inference Ace vs MATHTRA

The clearest difference is in-app purchases: MATHTRA at none against Inference Ace's 3. MATHTRA also leads on update cadence (every 2 weeks vs every 7 months). Inference Ace's advantage is ads (none vs shown) and iOS requirement (12.2 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Inference Ace sells 3 one-off in-app purchases. MATHTRA asks for nothing beyond the download.

Inference Ace ships an update every 7 months, MATHTRA every 2 weeks. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Inference Ace | MATHTRA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (21 ratings)](https://appshunter.io/ios/app/inference-ace/id866920724/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 88.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 5 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Kentaro Seki](https://appshunter.io/developer/1412644397) |

## What reviewers say

### 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 |


### MATHTRA

[App page](https://appshunter.io/ios/app/mathtra/id1412644398)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inference Ace free?

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

### Is MATHTRA free?

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

### Do Inference Ace or MATHTRA have ads?

MATHTRA shows ads; Inference Ace does not.

### Which is updated more often, Inference Ace or MATHTRA?

Inference Ace ships an update every 7 months, and MATHTRA every 2 weeks. Most recently, Inference Ace was updated on October 3, 2026 and MATHTRA on September 27, 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.*