# SizeRight vs FTC Lot Size Calculator

The clearest difference is ads: FTC Lot Size Calculator at none against SizeRight's shown. SizeRight's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.1 vs 17.6). On price, in-app purchases and device support there is nothing between them.

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

SizeRight ships an update every 3 weeks, FTC Lot Size Calculator every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SizeRight | FTC Lot Size Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 26 MB | 1 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Alexander Bacsa](https://appshunter.io/developer/1895938685) | [Georgi Toskov](https://appshunter.io/developer/1891774214) |

## What reviewers say

### SizeRight

[App page](https://appshunter.io/ios/app/sizeright-position-size/id6764857338)

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

**In-app purchases:** none


### FTC Lot Size Calculator

[App page](https://appshunter.io/ios/app/ftc-lot-size-calculator/id6788431066)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SizeRight free?

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

### Is FTC Lot Size Calculator free?

FTC Lot Size Calculator is free to download, with no in-app purchases.

### Do SizeRight or FTC Lot Size Calculator have ads?

SizeRight shows ads; FTC Lot Size Calculator does not.

### Which is updated more often, SizeRight or FTC Lot Size Calculator?

SizeRight ships an update every 3 weeks, and FTC Lot Size Calculator every 2 months. Most recently, SizeRight was updated on October 25, 2026 and FTC Lot Size Calculator on October 24, 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.*