# HistoGrams⁺ vs PDF StudyMate

The clearest difference is in-app purchases: HistoGrams⁺ at none against PDF StudyMate's 1. HistoGrams⁺ also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF StudyMate sells 1 one-off in-app purchase. HistoGrams⁺ asks for nothing beyond the download.

## The numbers

| Metric | HistoGrams⁺ | PDF StudyMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/histograms/id6477970674/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 28 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Viren Kariya](https://appshunter.io/developer/1731249462) | [Alteru Inc.](https://appshunter.io/developer/434747758) |

## What reviewers say

### HistoGrams⁺

[App page](https://appshunter.io/ios/app/histograms/id6477970674)

This app offers a quick reference and revision guide for students, covering histology, physiology, biochemistry, and pathology. It features comprehensive notes and hand-drawn diagrams to simplify complex topics and prepare for exams.

**Highlights:** Histology revision notes, Hand-drawn diagrams, Neuroanatomy demos, Physiology practical details, Video links for concepts, Regular updates

**In-app purchases:** none


### PDF StudyMate

[App page](https://appshunter.io/ios/app/pdf-studymate/id6776373945)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF StudyMate Unlock | $4.99 | one-time |


## Frequently asked questions

### Is HistoGrams⁺ free?

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

### Is PDF StudyMate free?

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

### Do HistoGrams⁺ or PDF StudyMate have ads?

Neither HistoGrams⁺ nor PDF StudyMate 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.*