# Bug Identifier vs Mental Math

Bug Identifier and Mental Math are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Bug Identifier sells 2 in-app purchases, starting at $0.99 per 7 days and Mental Math sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Bug Identifier | Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mental-math-kalc/id6764098294/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 17 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Inkolab](https://appshunter.io/developer/1726749975) | [LMT Digital Creations](https://appshunter.io/developer/640455461) |

## What reviewers say

### Bug Identifier

[App page](https://appshunter.io/ios/app/bug-identifier-buzzby/id6747992379)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $24.99 | per year |


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-kalc/id6764098294)

Sharpen your mental math skills with daily practice. This app uses spaced repetition to help you master concepts like fractions, percentages, and algebra. It offers two modes for flexible learning and provides real-life examples of how math is used every day.

**Highlights:** Spaced repetition system (SRS), Covers multiplication, division, fractions, percentages, algebra, Zen and Chrono practice modes, Visible progress tracking, Real-life math examples, Home screen widgets, Customizable reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plan Annuel | $17.99 | one-time |
| Accès à vie | $29.99 | one-time |


## Frequently asked questions

### Is Bug Identifier free?

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

### Is Mental Math free?

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

### Do Bug Identifier or Mental Math have ads?

Neither Bug Identifier nor Mental Math shows ads.

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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.*