# DOT dataCalc vs KLASH Viewer

The clearest difference is in-app purchases: KLASH Viewer at none against DOT dataCalc's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DOT dataCalc sells 2 in-app purchases, starting at $1.99 per month. KLASH Viewer asks for nothing beyond the download.

DOT dataCalc ships an update monthly, KLASH Viewer every 2 weeks. The most recent releases landed on September 18, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | DOT dataCalc | KLASH Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 1 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JOSE F DA SILVA NT](https://appshunter.io/developer/524992898) | [KLASH](https://appshunter.io/developer/1807355647) |

## What reviewers say

### DOT dataCalc

[App page](https://appshunter.io/ios/app/dot-datacalc/id524992895)

This app helps digital cinema and video professionals estimate storage needs for their recordings. It calculates file sizes based on chosen camera models, codecs, and recording durations. Access to all features may require a subscription.

**Highlights:** Instant storage estimation, Camera setup options, Supports numerous camera models, Calculates file size by recording time, Multiple codec support, Subscription for full features

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $4.99 | per year |


### KLASH Viewer

[App page](https://appshunter.io/ios/app/klash-viewer/id6744369550)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DOT dataCalc free?

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

### Is KLASH Viewer free?

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

### Do DOT dataCalc or KLASH Viewer have ads?

Neither DOT dataCalc nor KLASH Viewer shows ads.

### Which is updated more often, DOT dataCalc or KLASH Viewer?

DOT dataCalc ships an update monthly, and KLASH Viewer every 2 weeks. Most recently, DOT dataCalc was updated on September 18, 2026 and KLASH Viewer on September 14, 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.*