# Visolve RT for iPhone vs Drill Bit Converter

The clearest difference is price: Visolve RT for iPhone at Free against Drill Bit Converter's $0.99. Visolve RT for iPhone also leads on update cadence (every 13 months vs every 54 months) and iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

Visolve RT for iPhone is free to download; Drill Bit Converter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Visolve RT for iPhone ships an update every 13 months, Drill Bit Converter every 54 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Visolve RT for iPhone | Drill Bit Converter |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 54 months |
| Monetization | Free | — |
| Size | 3 MB | 2 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryobi Systems Co.,Ltd.](https://appshunter.io/developer/422237051) | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) |

## What reviewers say

### Visolve RT for iPhone

[App page](https://appshunter.io/ios/app/visolve-rt-for-iphone/id668502747)

This utility app assists individuals with color vision deficiency by applying real-time video transformations to enhance color perception. It offers various filters and simulations to help users distinguish colors, find specific hues, or understand how others perceive the world.

**Highlights:** Real-time video color transformations, Red-Green color transform, Blue-Yellow color transform, Saturation increase, Color filtering, Hatching patterns, Color blindness simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### Drill Bit Converter

[App page](https://appshunter.io/ios/app/drill-bit-converter/id1552080952)

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

**In-app purchases:** none


## Frequently asked questions

### Is Visolve RT for iPhone free?

Visolve RT for iPhone is free to download, with no in-app purchases.

### Is Drill Bit Converter free?

Drill Bit Converter costs $0.99, with no in-app purchases.

### Do Visolve RT for iPhone or Drill Bit Converter have ads?

Neither Visolve RT for iPhone nor Drill Bit Converter shows ads.

### Which is updated more often, Visolve RT for iPhone or Drill Bit Converter?

Visolve RT for iPhone ships an update every 13 months, and Drill Bit Converter every 54 months. Most recently, Visolve RT for iPhone was updated on October 9, 2026 and Drill Bit Converter on October 8, 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.*