# PrefixPlus vs RefuelCheck

The clearest difference is in-app purchases: PrefixPlus at none against RefuelCheck's 1. RefuelCheck's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RefuelCheck sells 1 one-off in-app purchase. PrefixPlus asks for nothing beyond the download.

PrefixPlus ships an update every 2 months, RefuelCheck every 9 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PrefixPlus | RefuelCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/prefixplus-add-the-prefix/id1142430837/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 71.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 2 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yasuhiko nagahara](https://appshunter.io/developer/1142430836) | [Fazry Rachman Susanto](https://appshunter.io/developer/1827368574) |

## What reviewers say

### PrefixPlus

[App page](https://appshunter.io/ios/app/prefixplus-add-the-prefix/id1142430837)

Easily add international or custom prefixes to all your phone numbers in contacts simultaneously. This utility helps manage multiple contact entries for different calling regions without overwriting existing numbers. Ensure you back up your contacts before use.

**Highlights:** Add prefixes to multiple contacts at once, Does not overwrite existing numbers, Customizable prefix numbers, Customizable label for new entries, Supports iCloud and Gmail synchronized contacts

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💡 Allows adding prefix numbers to contacts
- 🚀 Efficient batch update of contacts
- 👍 Convenient for users of MVNO services
- 👍 Integrates well with default phone app

**What reviewers complain about**

- 🐛 Crashes or freezes when updating contacts
- 🐛 Inconsistent or incomplete contact updates
- 🔋 Potential for increased data usage or charges

**Reported bugs**

- Crashes on iOS 13.3
- Duplicate contact entries created
- Prefix not applied to all contacts

**Requested features**

- Option to add space between prefix and number
- Support for local/offline contacts
- Ability to selectively update contacts


### RefuelCheck

[App page](https://appshunter.io/ios/app/refuelcheck/id6754218260)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $1.99 | one-time |


## Frequently asked questions

### Is PrefixPlus free?

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

### Is RefuelCheck free?

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

### Do PrefixPlus or RefuelCheck have ads?

PrefixPlus shows ads; RefuelCheck does not.

### Which is updated more often, PrefixPlus or RefuelCheck?

PrefixPlus ships an update every 2 months, and RefuelCheck every 9 days. Most recently, PrefixPlus was updated on October 24, 2026 and RefuelCheck on October 9, 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.*