# Zapvision vs Flip Unit

The clearest difference is update cadence: Flip Unit at monthly against Zapvision's every 2 months. Zapvision's advantage is iOS requirement (13.0 vs 17.6). On price, ads, 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.

Zapvision ships an update every 2 months, Flip Unit monthly. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Zapvision | Flip Unit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/flip-unit-unit-converter/id6757921823/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free |
| Size | 27 MB | 6 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zappar Limited](https://appshunter.io/developer/429885271) | [SIRAJ SALIM](https://appshunter.io/developer/1869633316) |

## What reviewers say

### Zapvision

[App page](https://appshunter.io/ios/app/zapvision/id1603467286)

**In-app purchases:** none


### Flip Unit

[App page](https://appshunter.io/ios/app/flip-unit-unit-converter/id6757921823)

Easily convert units across 12 categories including cooking, currency, and distance. Access conversions on your iPhone, Apple Watch, and home screen widgets. This app offers a clean interface and works offline for most conversions.

**Highlights:** 12 conversion categories, Apple Watch app and complications, iPhone home screen widgets, Offline conversion (except currency), No ads or tracking, iCloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Zapvision free?

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

### Is Flip Unit free?

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

### Do Zapvision or Flip Unit have ads?

Neither Zapvision nor Flip Unit shows ads.

### Which is updated more often, Zapvision or Flip Unit?

Zapvision ships an update every 2 months, and Flip Unit monthly. Most recently, Zapvision was updated on October 5, 2026 and Flip Unit 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.*