Backplain vs Fenk Ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Backplain
Access over 30 AI models in one app to get faster, better answers. Compare responses from multiple AI engines side-by-side to instantly find the smartest solution. Boost productivity for research, writing, coding, and more.
- Access 30+ AI models
- Side-by-side response comparison
- Boost productivity
- Affordable subscription
- Private and secure
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Backplain – Your All-in-One AI Chat Hub Access 30+ powerful AI models in one place and get better answers faster. Backplain sends your prompt to up to 10 AI engines at once—so you can compare responses side-by-side and instantly pick the smartest solution. Why Backplain? Multiple AI Models, One App: Chat with top AI engines like ChatGPT, PaLM, Llama, and more—all from a single interface. Instant Side-by-Side Comparison: Skip the guesswork. See how different AI models respond and choose the answer that works best for you. Boost Your Productivity: Perfect for research, writing, studying, coding help, brainstorming, decision-making, and idea exploration. One Affordable Subscription: Unlimited access to all AI models for just $9.99/month. No extra tokens or hidden fees. Private & Secure: Built with modern security and privacy practices to help keep your data safe. How It Works Install Backplain Sign up and start chatting Send a prompt Watch up to 10 AI models respond simultaneously Compare answers and pick the best one Backplain is built for students, professionals, creators, researchers, and anyone who wants reliable, high-quality answers—fast. Discover smarter insights, save time, and elevate your workflow with the power of multi-model AI. Start your free trial today and experience AI like never before. We are the Backplane of AI! This application is subject to the standard Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fenk Ai
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Fenk AI is a multi-model AI chat application that lets you access different artificial intelligence systems in one place. Instead of switching between multiple apps, Fenk AI allows you to interact with various AI models through a single, simple chat interface. You can choose the model that best fits your needs and use it for learning, coding, writing, problem solving, and everyday questions. Supported AI models may include: • Gemini • ChatGPT • Claude • Grok • GLM • Kimi • LLaMA-based models • DeepSeek • Qwen • Fenk AI Key features: • Access multiple AI models in one app • Ask questions and get clear explanations • Help with coding and technical topics • Motivation, learning, and productivity support • Clean and easy-to-use chat experience Fenk AI is designed to give users flexibility by offering different AI perspectives in a single application. Disclaimer: Fenk AI is an independent application and is not affiliated with, endorsed by, or officially connected to the providers of the listed AI models. AI-generated responses may be inaccurate and should not be relied upon as professional advice.
Screenshots
Verdict
Backplain and Fenk Ai are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Backplain sells 2 in-app purchases, starting at $9.99 per month and Fenk Ai sells 8 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Backplain ships an update monthly, Fenk Ai fortnightly. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.
| Parameter | Backplain | Fenk Ai |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 37 MB | 54 MB |
| Age rating | 17+ | 4+ |
| Developer | Backplain Inc. | abbas yavuz |
In-app purchases
Backplain
- Backplain Pro Monthly14 Days trial$9.991 Month
- Backplain Pro Yearly1 Year trial$99.991 Year
Fenk Ai
- Basic Plan1$5.991 Month
- Base Plan$11.991 Month
- Pro Plan$29.991 Month
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- Ultra Plan$59.991 Month
- 500 Stars$6.00
- 1000 Stars$12.00
- 2500 Stars$30.00
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- 5000 Stars$60.00









