Prefix App vs PrefixPlus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prefix App
Easily add a prefix to phone numbers before dialing without altering your contacts. Ideal for managing business phone lines or specific calling requirements directly from your address book or keypad.
- Full address book access
- Customizable contacts
- Recent calls list
- Customizable prefix and suffix
- Direct dialing via keypad
- Intuitive interface
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Prefix App is the App that let you put a prefix before the phone number without editing your address book. Very useful if you have a business phone. Features: - Full address book - Customizable address book - Recent calls - Customizable prefix; - Customizable suffix; - Direct call with phone keypad; - Simple, intuitive and smart interface;
PrefixPlus
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.
- 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
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PrefixPlus allows you to add the prefix number to phone numbers in Contacts at once. Phone numbers with the prefix number will not be replaced but added to contacts. For example, if you set the number "+81" and the label "Call(JP)", contacts will be updated as follows. [Before update] Home: 03-1234-5678 Mobile: 090-1234-5678 [After update] Home: 03-1234-5678 Mobile: 090-1234-5678 Call(JP) Home: +81-3-1234-5678 Call(JP) Mobile: +81-90-1234-5678 (Caution) Be sure to back up contacts as security against accidents. For example, if you back up to iCloud, you can restore contacts at some point in the past. Please note that you can add prefix numbers to contacts synchronized with local, iCloud, Gmail only.
Screenshots
Verdict
The clearest difference is ads: Prefix App at none against PrefixPlus's shown. Prefix App also leads on update cadence (fortnightly vs every 2 months) and monetization model (free vs ad-supported). PrefixPlus's advantage is review sentiment (72% vs 48%). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Prefix App ships an update fortnightly, PrefixPlus every 2 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.
| Parameter | Prefix App | PrefixPlus |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (1.1K ratings) — better |
| Positive reviews | 48.3% of reviews | 71.8% of reviews — better |
| Number of ratings | — | 1.1K — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 21 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Alain Lima | yasuhiko nagahara |
Customer experience
Prefix App
PrefixPlus
Bugs and requests
Prefix App
Not enough reviews yet to summarise bugs or requests.
PrefixPlus
Reported bugs
3 issues- Crashes on iOS 13.3
- Duplicate contact entries created
- Prefix not applied to all contacts
Requested features
3 requests- Option to add space between prefix and number
- Support for local/offline contacts
- Ability to selectively update contacts
In-app purchases
Prefix App
No in-app purchases
PrefixPlus
No in-app purchases
