# BoltBox vs Ring Sizer

The clearest difference is in-app purchases: Ring Sizer at none against BoltBox's 2. Ring Sizer also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. BoltBox sells 2 in-app purchases, starting at $2.99 per month. Ring Sizer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | BoltBox | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/boltbox-calculator-and-tools/id6740825077/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 49 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Senol Cagir](https://appshunter.io/developer/1240140029) | [Yaroslav Trofimov](https://appshunter.io/developer/1851395994) |

## What reviewers say

### BoltBox

[App page](https://appshunter.io/ios/app/boltbox-calculator-and-tools/id6740825077)

This utility app provides a comprehensive suite of tools for daily and professional tasks. It includes calculators, text editors, QR code functions, audio tools, and more, all within a user-friendly interface to enhance efficiency.

**Highlights:** Calculation & Conversion Tools, Text Editing & Analysis, QR Code Generation & Scanning, Audio Recording & Text-to-Speech, Password & Random Number Generation, Pomodoro Timer & White Noise

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $24.99 | per year |


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measure-ruler/id6793472743)

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

**In-app purchases:** none


## Frequently asked questions

### Is BoltBox free?

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

### Is Ring Sizer free?

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

### Do BoltBox or Ring Sizer have ads?

BoltBox shows ads; Ring Sizer does not.

### Which is updated more often, BoltBox or Ring Sizer?

BoltBox ships an update every 2 weeks, and Ring Sizer every 2 weeks. Most recently, BoltBox was updated on October 28, 2026 and Ring Sizer on October 25, 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.*