# Mercury vs WiPhone

The clearest difference is in-app purchases: WiPhone at none against Mercury's 5. WiPhone also leads on update cadence (every 13 months vs every 70 months) and iOS requirement (16.0 vs 26.0). Mercury's advantage is review sentiment (100% vs 67%). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Mercury sells 5 one-off in-app purchases. WiPhone asks for nothing beyond the download.

Mercury ships an update every 70 months, WiPhone every 13 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Mercury | WiPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/mercury-temperature-converter/id1494415587/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 70 months | **Every 13 months** |
| Monetization | Free | Free |
| Size | 4 MB | 98 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Samuel Herrera](https://appshunter.io/developer/962670797) | [Wimore S.r.l.](https://appshunter.io/developer/1610976453) |

## What reviewers say

### Mercury

[App page](https://appshunter.io/ios/app/mercury-temperature-converter/id1494415587)

Easily convert temperatures between Celsius, Fahrenheit, and Kelvin with an elegant and intuitive interface. Features dynamic background color changes based on temperature and supports decimal conversions.

**Highlights:** Celsius, Fahrenheit, Kelvin conversion, Interactive temperature scrolling, Dynamic background color, Reset to zero function, Decimal temperature support

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Massive Tip | $9.99 | one-time |


### WiPhone

[App page](https://appshunter.io/ios/app/wiphone/id1660763338)

This internet telephony app allows you to make and receive calls using your smartphone over 4G and WiFi networks. It connects to a dedicated hosted switching system and optimizes bandwidth usage with small band codecs. An account from a VoIP provider is required to use this supplier-specific software.

**Highlights:** Make and receive calls, VoIP calls over 4G/WiFi, Optimized bandwidth usage, Connects to hosted switching system, Supplier-specific application

**In-app purchases:** none


## Frequently asked questions

### Is Mercury free?

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

### Is WiPhone free?

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

### Do Mercury or WiPhone have ads?

Neither Mercury nor WiPhone shows ads.

### Which is updated more often, Mercury or WiPhone?

Mercury ships an update every 70 months, and WiPhone every 13 months. Most recently, Mercury was updated on October 24, 2026 and WiPhone 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.*