# Grammar Parrot vs Smart Mental Math Trainer

The clearest difference is update cadence: Smart Mental Math Trainer at every 3 days against Grammar Parrot's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Grammar Parrot sells 2 in-app purchases, starting at $5.99 per month and Smart Mental Math Trainer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Grammar Parrot ships an update every 2 weeks, Smart Mental Math Trainer every 3 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Grammar Parrot | Smart Mental Math Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-mental-math-trainer/id6761359389/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 37 MB | 32 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Boon Kgim Khur](https://appshunter.io/developer/1860792890) | [Maximilian Daniliev](https://appshunter.io/developer/1889111350) |

## What reviewers say

### Grammar Parrot

[App page](https://appshunter.io/ios/app/grammar-parrot/id6757898313)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $5.99 | per month |
| Premium Yearly | $59.99 | per year |


### Smart Mental Math Trainer

[App page](https://appshunter.io/ios/app/smart-mental-math-trainer/id6761359389)

Improve your arithmetic skills with an AI coach that adapts to your learning pace. Master multiplication, division, percentages, and more through interactive lessons and targeted practice sessions. Learn practical calculation strategies to boost speed and accuracy in everyday situations.

**Highlights:** Adaptive AI coaching, Learn calculation strategies, Practice core arithmetic skills, Focus on weak spots, Progress tracking, Short, high-impact sessions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Lifetime Unlock | $3.99 | one-time |


## Frequently asked questions

### Is Grammar Parrot free?

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

### Is Smart Mental Math Trainer free?

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

### Do Grammar Parrot or Smart Mental Math Trainer have ads?

Neither Grammar Parrot nor Smart Mental Math Trainer shows ads.

### Which is updated more often, Grammar Parrot or Smart Mental Math Trainer?

Grammar Parrot ships an update every 2 weeks, and Smart Mental Math Trainer every 3 days. Most recently, Grammar Parrot was updated on October 31, 2026 and Smart Mental Math Trainer on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*