# Calcula vs Numvolt

The clearest difference is in-app purchases: Calcula at none against Numvolt's 1. Calcula also leads on ratings volume (10 vs 1). Numvolt's advantage is update cadence (every 2 days vs every 2 weeks) and rating (5.0 vs 4.6). On price, ads and device support there is nothing between them.

Both are free to download. Numvolt sells 1 one-off in-app purchase. Calcula asks for nothing beyond the download.

Numvolt holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calcula has 10 ratings behind it against 1, so its average is the more settled of the two.

Calcula ships an update every 2 weeks, Numvolt every 2 days. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calcula | Numvolt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10 ratings)](https://appshunter.io/ios/app/calcula-mental-math-trainer/id1510492911/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/numvolt-mental-math-trainer/id6809142973/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 44 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Raj Pandya](https://appshunter.io/developer/1510492910) | [ROMEO ILARIO FLAVIO GAMBINO](https://appshunter.io/developer/1874823696) |

## What reviewers say

### Calcula

[App page](https://appshunter.io/ios/app/calcula-mental-math-trainer/id1510492911)

This app offers daily mental math drills with various game modes and answer styles. Track your progress with detailed stats, streaks, and achievements. Designed for focus with a clean interface and no ads.

**Highlights:** Four game modes (Standard, Percent, Squared, Sequence), Three answer styles (Type, Reveal, Multiple Choice), Flexible session lengths and difficulties, Streak tracking and leveling system, Unlockable achievements, Detailed performance statistics, Light and dark themes

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

**In-app purchases:** none


### Numvolt

[App page](https://appshunter.io/ios/app/numvolt-mental-math-trainer/id6809142973)

Enhance your mental math skills with a comprehensive trainer offering 15 topics and 150 levels each. Learn fastest calculation methods, track progress, and compete globally. Features include daily challenges, duels, and a home screen widget.

**Highlights:** 15 topics, 150 levels each, Fastest calculation method explanations, Daily challenges and sprints, Global ladder rankings, Two-player duels, Progress tracking and home screen widget

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Numvolt Pro | $8.99 | one-time |


## Frequently asked questions

### Is Calcula free?

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

### Is Numvolt free?

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

### Which has better reviews, Calcula or Numvolt?

Numvolt is rated higher. Calcula averages 4.6 out of 5 from 10 ratings, while Numvolt averages 5.0 from 1 ratings.

### Do Calcula or Numvolt have ads?

Neither Calcula nor Numvolt shows ads.

### Which is updated more often, Calcula or Numvolt?

Calcula ships an update every 2 weeks, and Numvolt every 2 days. Most recently, Calcula was updated on October 6, 2026 and Numvolt 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.*