# Vidyagram vs Christopher

The clearest difference is review sentiment: Christopher at 100% against Vidyagram's 75%. Vidyagram's advantage is update cadence (monthly vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Vidyagram ships an update monthly, Christopher every 4 months. The most recent releases landed on September 25, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | Vidyagram | Christopher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/vidyagram/id6446213422/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | Free |
| Size | 117 MB | 93 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Udit Ranjan](https://appshunter.io/developer/1895608575) | [Anuj Gupta](https://appshunter.io/developer/1651060633) |

## What reviewers say

### Vidyagram

[App page](https://appshunter.io/ios/app/vidyagram/id6446213422)

Visualize mathematical concepts in 3D using augmented reality. This interactive app makes learning shapes, graphs, and formulas more engaging for students. Explore complex ideas through immersive visualizations.

**Highlights:** Augmented Reality visualization, 3D concept models, Interactive learning, Maths education, Shapes and graphs visualization

**Features:** Vision Pro support

**In-app purchases:** none


### Christopher

[App page](https://appshunter.io/ios/app/christopher/id6473265340)

This platform offers online learning for competitive exam preparation, guided by an experienced educator. It aims to provide comprehensive educational resources for students seeking government sector placements.

**Highlights:** Online learning platform, Competitive exam preparation, Expert guidance, Government sector placement focus, Mobile learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vidyagram free?

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

### Is Christopher free?

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

### Do Vidyagram or Christopher have ads?

Neither Vidyagram nor Christopher shows ads.

### Which is updated more often, Vidyagram or Christopher?

Vidyagram ships an update monthly, and Christopher every 4 months. Most recently, Vidyagram was updated on September 25, 2026 and Christopher on July 8, 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.*