# CONVERT UNITS vs Sardines Carpool

The clearest difference is ads: Sardines Carpool at none against CONVERT UNITS's shown. Sardines Carpool also leads on review sentiment (100% vs 75%) and update cadence (every 4 days vs fortnightly). CONVERT UNITS's advantage is ratings volume (1.4K vs 12) and iOS requirement (15.0 vs 18.2). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.7 for CONVERT UNITS against 4.7 for Sardines Carpool. That said, the two scores are not equally well evidenced: CONVERT UNITS has 1.4K ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 75% of CONVERT UNITS's written reviews are positive against 100% of Sardines Carpool's.

CONVERT UNITS ships an update fortnightly, Sardines Carpool every 4 days. The most recent releases landed on September 29, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | CONVERT UNITS | Sardines Carpool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.4K ratings)](https://appshunter.io/ios/app/convert-units/id1114969241/reviews)** | [4.7 (12 ratings)](https://appshunter.io/ios/app/sardines-carpool/id6744044111/reviews) |
| Number of ratings | **1.4K** | 12 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Ad-supported | **Free** |
| Size | 21 MB | 14 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Robert Mc Cord Hoehn](https://appshunter.io/developer/1805723652) |

## What reviewers say

### CONVERT UNITS

[App page](https://appshunter.io/ios/app/convert-units/id1114969241)

Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.

**Highlights:** Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currency, Automatic currency updates, 160 currencies available, Multitasking enabled for iPad, Alphabetical quick links for units, Customizable startup categories, Adjustable accuracy and rounding

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

**In-app purchases:** none

**What reviewers like**

- 👍 Quick & easy to use
- 👍 Ease of use
- 👍 Simple and easy to use
- 👍 Well thought out and easy to use
- 👍 Excellent and very reliable

**What reviewers complain about**

- 🐛 Ads obstruct use
- 🐛 Subscription required to remove ads
- 🐛 Currency conversion not working

**Reported bugs**

- App got stuck, required uninstall/reinstall to fix
- Navigation issues, unable to get back to home page

**Requested features**

- Option to convert between functions (length to volume)
- Remember last conversion settings for each category


### Sardines Carpool

[App page](https://appshunter.io/ios/app/sardines-carpool/id6744044111)

Effortlessly organize carpools directly within iMessage. Create ride polls, manage multiple vehicles, and save your car details for quick setup. Everything stays within your conversations, no accounts or servers needed.

**Highlights:** Create ride polls in iMessage, Support for multi-vehicle trips, Save custom vehicle seat layouts, Automatic name saving, No accounts or server reliance, Trip scheduling with date and time

**Features:** iMessage stickers

**In-app purchases:** none


## Frequently asked questions

### Is CONVERT UNITS free?

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

### Is Sardines Carpool free?

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

### Which has better reviews, CONVERT UNITS or Sardines Carpool?

CONVERT UNITS is rated higher. CONVERT UNITS averages 4.7 out of 5 from 1.4K ratings, while Sardines Carpool averages 4.7 from 12 ratings.

### Do CONVERT UNITS or Sardines Carpool have ads?

CONVERT UNITS shows ads; Sardines Carpool does not.

### Which is updated more often, CONVERT UNITS or Sardines Carpool?

CONVERT UNITS ships an update fortnightly, and Sardines Carpool every 4 days. Most recently, CONVERT UNITS was updated on September 29, 2026 and Sardines Carpool on June 5, 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.*