Prefix Dialer Pro vs ContactFixer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prefix Dialer Pro
Automatically add dial codes or modify phone numbers before making calls. Ideal for office PBX systems, international dialing, or any situation requiring number reformatting. Sync rules across devices via iCloud.
- Automatic prefix and replacer rules
- Contact integration
- Clipboard detection
- Manual number entry
- Dial history
- iCloud sync
- Shake to open contacts
Read full descriptionHide full description
Prefix Dialer Pro lets you automatically prepend dial codes and transform phone numbers before placing a call — perfect for office PBX systems, international dialling, or any setup where numbers need a prefix. HOW IT WORKS Set up one or more prefix rules (e.g. "00" or "9") and replacer rules (e.g. strip the leading "+"). When you dial a number from your contacts, clipboard, or manually, every enabled rule is applied automatically. FEATURES • Contacts — pick any phone number directly from your contacts • Clipboard — detected automatically each time you open the app • Manual entry — type a number without opening your contacts • Dial history — quickly redial recent numbers • Shake to open contacts picker • iCloud sync — rules stay in sync across your devices • Up to 1 prefix and 1 replacer free; Go Pro for unlimited GO PRO A single one-time purchase unlocks unlimited prefixes and replacers and removes all ads. GREAT FOR • Staff who dial through a PBX (prepend 9 or 0 to get an outside line) • Frequent international callers (replace + with 00 or a country code) • Anyone whose phone system requires number reformatting before dialling
ContactFixer
This app automatically formats your US phone numbers into a consistent E.164 format, ensuring better compatibility with messaging and calling services. It scans your contacts, provides a preview of changes, and applies them instantly without needing an internet connection.
- Automatic US phone number formatting
- E.164 format conversion
- Preview changes before applying
- Instant contact updates
- Offline functionality
- Privacy-focused, no data collection
Read full descriptionHide full description
ContactFixer solves a small but annoying problem: your iPhone contacts are a mix of formats. Some numbers have the +1 country code, some have area codes in parentheses, some are just ten raw digits. iMessage, FaceTime, and third-party apps all behave better when numbers are in a consistent E.164 format — and ContactFixer gets you there in seconds. HOW IT WORKS Tap Scan Contacts and ContactFixer reads through your entire contacts list, identifying every US phone number missing the +1 country code. It shows you a full preview — contact name, old number, and new number — before changing anything. When you're ready, tap Apply All Changes and every contact is updated instantly using Apple's native Contacts framework. WHAT GETS FIXED (708) 555-0142 → +17085550142 312-555-0198 → +13125550198 8005550167 → +18005550167 17085550031 → +17085550031 Numbers already beginning with + are never touched. Your international contacts stay exactly as they are. COMPLETELY PRIVATE ContactFixer has no backend, no account, no analytics, and no ads. It makes zero network requests — you can run it in airplane mode and it works identically. Your contacts are read and written using the same native framework Apple's own Contacts app uses. Nothing ever leaves your device. SIMPLE BY DESIGN There's nothing to configure. No settings, no subscriptions, no account to create. Scan, review, apply — done.
Screenshots
Verdict
The clearest difference is in-app purchases: ContactFixer at none against Prefix Dialer Pro's 2. ContactFixer also leads on update cadence (every 2 days vs every 8 months). On price, rating, ratings volume and ads 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. Prefix Dialer Pro sells 2 one-off in-app purchases. ContactFixer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Prefix Dialer Pro against 5.0 for ContactFixer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Prefix Dialer Pro ships an update every 8 months, ContactFixer every 2 days. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.
| Parameter | Prefix Dialer Pro | ContactFixer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 8 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | SOHO S & N | Joe Wilson |
In-app purchases
Prefix Dialer Pro
- Additional Set of 5 Prefixes and 5 Replacers$0.99
- Set of 5 prefixes and 5 replacers$0.99
ContactFixer
No in-app purchases
Questions
Is Prefix Dialer Pro free?
Is ContactFixer free?
Which has better reviews, Prefix Dialer Pro or ContactFixer?
Do Prefix Dialer Pro or ContactFixer have ads?
Which is updated more often, Prefix Dialer Pro or ContactFixer?
Other comparisons















