DuoLens vs GPU Arena
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuoLens
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DuoLens — Capture the world and don't forget to capture yourself. Activate both front and back cameras simultaneously and record two videos at once. Whether it's family moments, travel memories, or everyday sharing — you and the scene are always in frame together. 【Key Features】 · Dual Recording — Capture front and back cameras simultaneously in one take, with synced audio · Flexible Display — Drag the floating window freely, swap views with one tap, or switch to split-screen mode · High Quality — Record from 720p to 4K, with 30fps and 60fps options · Audio Options — Choose stereo or mono recording to suit your needs · Zoom Control — Pinch to zoom while recording, easily adjust the rear camera view · Dual Playback — Play both videos in sync with progress control and mute options · Album Management — Browse all recordings, batch select and delete, replay with one tap · Video & Photo — Not just dual video recording — capture dual-view photos too 【Perfect For】 · Family Time — Capture your child's smile and your own reaction at the same time · Travel — The landmark and your expression, all in one frame · Daily Sharing — No more choosing between selfie and scenery — get both · Special Moments — Birthdays, parties, graduations — you're both in the picture 【Privacy & Terms】 Your privacy is strictly protected. All video editing is done locally and will not be shared. For more details, visit: Apple Standard License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service & Privacy Policy: https://app.kanchuan.com/en/duolens/policy 【Contact】 Wechat:ckanchuan Website:https://app.kanchuan.com/en/duolens
GPU Arena
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Compare graphics cards, processors and more in seconds with GPU Arena. Make the right call when you build or upgrade a PC: 70+ graphics cards, 50+ processors, RAM, SSDs, Apple Silicon, phone chips and game consoles, all side by side in one app. FEATURES • Side-by-side comparison of up to 4 parts, with scores and detailed specs • Estimated game FPS at 1080p / 1440p / 4K • Bottleneck calculator: see if your GPU and CPU are a good match at each resolution • Budget advisor: find the best GPU + CPU pair for your budget • "Is it worth upgrading?" analysis • Yearly electricity cost estimate • Favorites and quick search • Share a comparison card as an image • English and Turkish • Works offline: all data stays on your device Note: FPS figures and scores are estimates; real performance depends on your system configuration. Prices are approximate list prices.
Screenshots
Verdict
The clearest difference is update cadence: GPU Arena at every 2 days against DuoLens's every 10 days. On price, ads, 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.
DuoLens ships an update every 10 days, GPU Arena every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | DuoLens | GPU Arena |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 明伟 陈 | ONURCAN AYDOGAN |
In-app purchases
DuoLens
No in-app purchases
GPU Arena
No in-app purchases









