# Calculation Practice vs Zolly

The clearest difference is review sentiment: Zolly at 100% against Calculation Practice's 0%. Zolly also leads on price (Free vs $0.99) and device support (4 vs 1). Calculation Practice's advantage is in-app purchases (none vs 5). On ads there is nothing between them.

Zolly is free to download; Calculation Practice costs $0.99 up front. Zolly sells 5 one-off in-app purchases. Calculation Practice asks for nothing beyond the download.

## The numbers

| Metric | Calculation Practice | Zolly |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (17 ratings)](https://appshunter.io/ios/app/zolly-perspective-models/id6736867463/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Monetization | Paid | **Free** |
| Size | 2 MB | 485 MB |
| Requires iOS | 18.2 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hideomi Sato](https://appshunter.io/developer/601939713) | [Proko](https://appshunter.io/developer/976907261) |

## What reviewers say

### Calculation Practice

[App page](https://appshunter.io/ios/app/calculation-practice/id601939710)

Master fundamental math skills with this interactive flashcard app. Choose the correct answer from multiple choices for randomly generated calculations. Track your progress with accuracy and time metrics after each session.

**Highlights:** Randomized calculation problems, Multiple-choice answers, Auditory feedback for correct answers, Progress tracking (correct answers, time), Daily practice reinforcement

**Features:** macOS Compatibility

**In-app purchases:** none


### Zolly

[App page](https://appshunter.io/ios/app/zolly-perspective-models/id6736867463)

Learn dynamic perspective drawing by manipulating camera angles and object proximity. Explore ready-made models and primitive shapes to understand and experiment with perspective distortion for exciting visual effects.

**Highlights:** Learn perspective drawing, Dynamic perspective manipulation, Camera control for distortion, Ready-made and primitive models, Grid lines and ground planes, Understand position and proximity

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| XYZ Forms | $1.99 | one-time |
| Vehicle Pack | $4.99 | one-time |
| Buildings Pack | $4.99 | one-time |
| Home Props Pack | $4.99 | one-time |
| Work Props Pack | $4.99 | one-time |


## Frequently asked questions

### Is Calculation Practice free?

Calculation Practice costs $0.99, with no in-app purchases.

### Is Zolly free?

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

### Do Calculation Practice or Zolly have ads?

Neither Calculation Practice nor Zolly 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.*