Infinity vs WriteFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Infinity
This app provides Unified Communications by extending VoIP functionality to mobile devices. Users can maintain a consistent identity for calls, manage contacts, voicemail, and call history from one place. It also allows for efficient communication through answering rules, greetings, and presence management.
- Unified Communications solution
- VoIP functionality on mobile
- Maintain same identity across devices
- Contact management
- Voicemail and call history
- Answering rules and presence management
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Infinity - 1st Call is a SIP softclient that extends VoIP functionality beyond the land line or desktop, bringing features of the platform directly to end user's mobile devices as a Unified Communications solution. With Infinity, users are able to maintain the same identity when making or receiving calls from any location, regardless of device. Infinity also grants users the ability to manage contacts, voicemail, call history and configurations in a single location. This includes the management of answering rules, greetings and presence which all contribute to more efficient communication.
WriteFlow
Enhance your writing directly within any app. This AI-powered keyboard offers instant grammar correction, text rewriting, translation, and tone adjustment. Improve your messages, emails, and social media posts effortlessly.
- Instant grammar and spelling correction
- Text rewriting and paraphrasing
- Multilingual translation
- Tone adjustment (professional, friendly, etc.)
- Customizable AI prompts
- Works across multiple apps
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WriteFlow is the AI writing keyboard that fixes grammar, rewrites your message, and translates text right where you type. No copying and pasting, no switching apps. Tap one tool and your text is instantly proofread, rephrased, shortened, or restyled in the tone you want. WHY WRITEFLOW • Write better in seconds, in any app: Messages, Mail, WhatsApp, Gmail, Slack, Instagram, LinkedIn, and Notes • 50+ languages, including bilingual translation that shows the original and the translation together • Pick a tone: professional, friendly, confident, concise, or casual • Create your own custom AI prompts and pin the tools you use most WHAT YOU CAN DO • Proofread and fix grammar, spelling, and punctuation • Rewrite or paraphrase to sound clearer and more natural • Make text shorter, longer, or simpler • Reply faster with quick, relevant suggestions • Summarize long text into key points • Translate into 50+ languages HOW IT WORKS 1. Type or select your text 2. Tap a WriteFlow tool 3. Your improved text is ready to send PRIVACY Your text is processed only to complete your request and is never stored afterward. WORKS WHEREVER YOU WRITE One WriteFlow subscription works across iPhone, iPad, and Mac, so your tools go everywhere you do. FREE TO START Use WriteFlow free every day, or upgrade to Pro for unlimited access to every tool and all languages. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Infinity at none against WriteFlow's 3. WriteFlow's advantage is update cadence (every 5 days vs every 29 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. WriteFlow sells 3 in-app purchases, starting at $6.99 per month. Infinity asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Infinity against 5.0 for WriteFlow. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Infinity ships an update every 29 months, WriteFlow every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Infinity | WriteFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 29 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 121 MB | 27 MB |
| Age rating | 17+ | 4+ |
| Developer | 1st Call | Juraj Gajdos |
Customer experience
Infinity
WriteFlow
In-app purchases
Infinity
No in-app purchases
WriteFlow
- WriteFlow AI Keyboard7 Days trial$6.991 Month
- WriteFlow AI Keyboard14 Days trial$39.996 Months
- WriteFlow AI Keyboard14 Days trial$49.991 Year
