# Math Trainer vs SubVi

The clearest difference is review sentiment: Math Trainer at 78% against SubVi's 0%. Math Trainer also leads on rating (4.3 vs 2.5) and device support (5 vs 3). SubVi's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Math Trainer sells 1 one-off in-app purchase and SubVi sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Math Trainer holds the better App Store score, 4.3 against 2.5. Both are backed by a comparable volume of ratings — 15 and 4 respectively. Written reviews point the same way: 78% of Math Trainer's written reviews are positive against 0% of SubVi's.

Math Trainer ships an update every 2 months, SubVi fortnightly. The most recent releases landed on August 21, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Math Trainer | SubVi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (15 ratings)](https://appshunter.io/ios/app/math-trainer-quick-questions/id659065074/reviews)** | [2.5 (4 ratings)](https://appshunter.io/ios/app/subvi/id1058907603/reviews) |
| Number of ratings | **15** | 4 |
| Positive reviews | **77.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 2 MB | 39 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rob Sammons](https://appshunter.io/developer/659065077) | [Tuan Duong](https://appshunter.io/developer/787874021) |

## What reviewers say

### Math Trainer

[App page](https://appshunter.io/ios/app/math-trainer-quick-questions/id659065074)

Sharpen your mental math skills with rapid-fire arithmetic challenges. Practice addition, subtraction, division, and multiplication across four difficulty levels. Compete on global leaderboards and unlock achievements.

**Highlights:** Addition, Subtraction, Division, Multiplication, Four difficulty levels, Game Center leaderboards, Over 20 achievements, iCloud sync, Full iOS support (Dark Mode, Split Screen, VoiceOver), Privacy-focused (no external data storage or tracking)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Trainer Pro | $0.99 | one-time |


### SubVi

[App page](https://appshunter.io/ios/app/subvi/id1058907603)

Enhance English language skills through interactive video learning. Features include subtitle translations, dictation exercises, speech recognition for pronunciation practice, and vocabulary building. Access content from your favorite YouTube channels with subtitles.

**Highlights:** Side-by-side subtitle translations, Dictation exercises for listening comprehension, Speech recognition for pronunciation practice, Vocabulary building and exercises, Video summaries for Ted and Ted-Ed, Access YouTube videos with subtitles

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription. | $0.99 | per month |
| Yearly subscription. | $10.49 | per year |


## Frequently asked questions

### Is Math Trainer free?

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

### Is SubVi free?

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

### Which has better reviews, Math Trainer or SubVi?

Math Trainer is rated higher. Math Trainer averages 4.3 out of 5 from 15 ratings, while SubVi averages 2.5 from 4 ratings.

### Do Math Trainer or SubVi have ads?

Neither Math Trainer nor SubVi shows ads.

### Which is updated more often, Math Trainer or SubVi?

Math Trainer ships an update every 2 months, and SubVi fortnightly. Most recently, Math Trainer was updated on August 21, 2026 and SubVi on June 4, 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.*