# Histogram App vs Exposure Equivalence

The clearest difference is price: Histogram App at Free against Exposure Equivalence's $0.99. Histogram App also leads on iOS requirement (14.0 vs 17.0). Exposure Equivalence's advantage is chart position (#192 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Histogram App is free to download; Exposure Equivalence costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Histogram App ships an update every 4 months, Exposure Equivalence every 3 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | Histogram App | Exposure Equivalence |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Best chart rank | — | **#192** |
| Size | 17 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John Van Der Jagt](https://appshunter.io/developer/1692578324) | [Rob Duell PhD](https://appshunter.io/developer/1458271389) |

## What reviewers say

### Histogram App

[App page](https://appshunter.io/ios/app/histogram-app/id6450269382)

**Features:** macOS Compatibility

**In-app purchases:** none


### Exposure Equivalence

[App page](https://appshunter.io/ios/app/exposure-equivalence/id6469605168)

**Currently charting:** #192 Top Paid · Photo & Video (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is Histogram App free?

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

### Is Exposure Equivalence free?

Exposure Equivalence costs $0.99, with no in-app purchases.

### Do Histogram App or Exposure Equivalence have ads?

Neither Histogram App nor Exposure Equivalence shows ads.

### Which is updated more often, Histogram App or Exposure Equivalence?

Histogram App ships an update every 4 months, and Exposure Equivalence every 3 months. Most recently, Histogram App was updated on October 27, 2026 and Exposure Equivalence on October 27, 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.*