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Test scope & comparison notes
These are recorded facts, not a unified ranking. Tested tiers and scope are not consistently recorded. Read pricing with its date and timing with its conditions. Privacy observations reflect visible flows and statements, not a security audit.
Cross-task capability coverage across selected products
Each product is scored independently per task edge; switch tasks below while keeping shared products selected| Task edge | ImgUpscaler | DeWatermark | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 76/100 1280 × 1280 · PNG | Compare in task topic → |
| Image upscaling | 85/100 2048×2048 (PNG · 400% / 4.0x AI Upscale) · Historical description; output not attached | 81/100 1024 × 1024 · PNG | Active task |
| Object removal | Not tested in topic | 74/100 1280 × 1280 · PNG | Compare in task topic → |
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Browse this task →| Criterion | ImgUpscaler (AI Image Upscaler) Image upscaling 85/100 Seven-aspect task score Free login-free 4× output retains detail well; a fullscreen ad can interrupt initial use, and this run took about 22 seconds. Tested export 2048×2048 (PNG · 400% / 4.0x AI Upscale) · Historical description; output not attached Historical test · 2026-10-16 | DeWatermark Image Enhancer (AI Upscaler) Image upscaling 81/100 Seven-aspect task score Login-free 2× output is clean and watermark-free with clear tiers and credit costs; 4× needs Pro rather than free access. Tested export 1024 × 1024 · PNG Historical test · 2026-10-17 |
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| Pricing & rules | ||
| Pricing plans | ImgUpscaler personal and business plans (Free / Premium / Business); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-21 ↗ Free Free Free 50 credits/month; single-image AI upscaling, enhancement, and Reimagine (includes ads; guest single-image 4x upscaling available). Premium Monthly2026-10-21 ↗ USD 9.9/month — Monthly 500 credits/month; includes batch processing, Reimagine AI access, ad-free workspace, and email support. Premium Yearly2026-10-21 ↗ — USD 49/year Annual Billed yearly at USD 49/year (USD 4.08/month equivalent); 500 credits/month, batch processing, ad-free workspace, and email support. Business Monthly2026-10-21 ↗ USD 19.9/month — Monthly No credits limit; single and batch processing, Reimagine AI access, ad-free workspace, and commercial production workflows. Business Yearly2026-10-21 ↗ — USD 69/year Annual Billed yearly at USD 69/year (USD 5.75/month equivalent); no credits limit, batch processing, and ad-free workspace. 5 plan / billing-period records, all listed; — means that period is not recorded. The official pricing page lists Free (USD 0, 50 credits/month, single-image processing, includes ads), Premium (USD 9.90/month or USD 49/year, equivalent to USD 4.08/month, with 500 credits/month, batch processing, and no ads), and Business (USD 19.90/month or USD 69/year, equivalent to USD 5.75/month, with no credit limit, batch processing, and no ads). Cancellation, sources & verification recordCancel or change plans anytime from the account billing page; both free and paid results may be used for personal or commercial projects subject to source-image rights. ImgUpscaler official monthly/yearly pricing and FAQ ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ | Basic web removal and related Pro/credit offers · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic background removal2026-10-20 ↗ Free Free Free Feature page describes free basic removal without watermarks; input up to 5MB Pricing card says 3 daily credits, FAQ says 2; these describe watermark-service credits Pro Pack 12K2026-10-20 ↗ — USD 120/year Annual Selected tier: 12,000 credits; credit table concerns watermark processing Removal feature page lists HD and batch under Pro; input up to 10MB；Unused credits expire at membership end; no automatic renewal 100 credits2026-10-20 ↗ USD 7 · one-time payment Usage / one-time Usage / one-time 100 cross-tool credits; removal cost unspecified Rules [1] 500 credits2026-10-20 ↗ USD 18 · one-time payment Usage / one-time Usage / one-time 500 cross-tool credits; removal cost unspecified Rules [1] 1,000 credits2026-10-20 ↗ USD 25 · one-time payment Usage / one-time Usage / one-time 1,000 cross-tool credits; removal cost unspecified Rules [1] 5,000 credits2026-10-20 ↗ USD 80 · one-time payment Usage / one-time Usage / one-time 5,000 cross-tool credits; removal cost unspecified Rules [1] 10,000 credits2026-10-20 ↗ USD 120 · one-time payment Usage / one-time Usage / one-time 10,000 cross-tool credits; removal cost unspecified Rules [1] 25,000 credits2026-10-20 ↗ USD 250 · one-time payment Usage / one-time Usage / one-time 25,000 cross-tool credits; removal cost unspecified Rules [1] 50,000 credits2026-10-20 ↗ USD 450 · one-time payment Usage / one-time Usage / one-time 50,000 cross-tool credits; removal cost unspecified Rules [1] 100,000 credits2026-10-20 ↗ USD 800 · one-time payment Usage / one-time Usage / one-time 100,000 cross-tool credits; removal cost unspecified Rules [1] 18 plan / billing-period records, all listed; — means that period is not recorded. All four monthly/annual volumes are verified using purchase-button totals (6,000 annual credits cost $90, despite a rounded $8 monthly label). The free card states 3 daily credits but other free statements conflict, so a single free allowance is unconfirmed. The 1/3-credit rules concern watermark removal, not a separately stated background-removal rate. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordNo automatic renewal; the FAQ states no refund policy, with support available for payment issues. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ All Pro volumes and billing periods ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ · Capture 7 ↗ · Capture 8 ↗ |
| Free & trial allowance on the test date | Free single-image 200% (2x) and 400% (4x) unwatermarked upscaling without login; batch upload requires a paid plan | Free anonymous 2X upscaling (up to 2800px) and unwatermarked 1024×1024 export; 4X upscaling requires Pro |
| Cancellation & refunds | Cancel or change plans anytime from the account billing page; both free and paid results may be used for personal or commercial projects subject to source-image rights. | No automatic renewal; the FAQ states no refund policy, with support available for payment issues. |
| Disclosure of costs & limits | No paywall traps; supported by standard and vignette Google AdSense ads | Scale selector explicitly displays '2X | Max 2800px' and '4X PRO' |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 2× |
| Fixture findings | This guest run produced a watermark-free 4× image with structure retained; findings cover this fixture only. | Denoising and text edges were retained; the tested free tier was limited to 2× at 1024px. |
| Original historical observation | PSNR=27.50dB · SSIM=0.8900 (4x 2048×2048 unwatermarked PNG); edge_corr=0.6685, hf_ratio=0.4995, plate_psnr=16.22dB—one of the very few tools offering genuine 400% watermark-free exports to anonymous guests. | DeWatermark Image Enhancer's 2X model prioritizes faithful denoising and edge sharpening, scoring PSNR = 27.12 dB overall and 30.46 dB on the engraved wooden sign without hallucinated textures, though 4X (2048×2048) is locked behind Pro. |
| Suitable uses · historical assessment | Users who want true 4x (2048×2048) watermark-free faithful super-resolution without creating an account | Users seeking high-PSNR, artifact-free 2x image enhancement without login or watermarks |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048×2048 (PNG · 400% / 4.0x AI Upscale) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. | 1024 × 1024 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (4.0x / 400% · Free without login) | 1024 × 1024 (2X Unwatermarked) |
| Watermark observation | 100% Watermark-Free | Watermark-free |
| Batch & API | Batch web upload on paid plans; offline batch processing via desktop app Upscal.app | Supports Batch Enhance Photo and REST API |
| Recorded free-tier dimensions | Not verified | 1024 × 1024 |
| Attached file dimensions | Not verified | 1024 × 1024 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 20.68s · End-to-end reference: 22.22s | Network-observed server wait: 8.1s · End-to-end reference: 9.5s |
| Date & fixture | 2026-10-16 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-17 · anchor_upscale_v1 · US-West (California, AS2914) |
| Repeated tests & reliability | No standardized repetition count, success rate or variability range is recorded. | No standardized repetition count, success rate or variability range is recorded. |
| Interaction experience | ||
| Account requirements | No login in this test | No login in this test |
| Sign-in methods | No login required; optional email/Google login for paid plans | No login required; optional email/Google login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero login walls or bait-and-switch paywalls, though the free web page runs Google AdSense including a full-screen interstitial vignette (`#google_vignette`, Screenshot ④) that may require dismissing. | No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | ImgUpscaler / Upscal.app Team | XTeam (DeWatermark.ai) |
| Recorded origin | Independent Cross-Platform Utility Team (Web + macOS/Windows App Store) | Global AI Vision Team (XTeam) |
| Domain history record | 2020–Present | 2023–present |
| Background & reputation assessment | Operated by the independent team behind Upscal.app (available on the Mac App Store and Microsoft Store). | Operated by XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | Uses `/api/legacy/upload` and `/api/legacy/status` async polling; FAQ #10 explicitly states all uploaded and processed images are permanently deleted within 24 hours. | Lossless 512×512 upload with 60-minute automatic cloud cleanup. |
| Retention statement | Claims deletion within 24 hours; deletion not independently verified | Claims deletion within 60 minutes; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 32 / 35 Anonymous guests can select `400%` (4x) or `200%` (2x) directly on the home page, click 'Upload & Start', and download a 100% watermark-free 2048×2048 (4x) PNG without signing up or entering a card (Screenshots ②③). | 28 / 35 Uploads the 512×512 anchor and automatically completes 2X upscaling (1024×1024) without login; clearly labels '2X (2 credits)' vs '4X PRO (4 credits)' and allows free unwatermarked 1024×1024 download (02_workspace.png, 03_download.png). |
| Interaction restraint | 21 / 30 Zero login walls or bait-and-switch paywalls, though the free web page runs Google AdSense including a full-screen interstitial vignette (`#google_vignette`, Screenshot ④) that may require dismissing. | 25 / 30 No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. |
| Background & reputation | 15 / 20 Operated by the independent team behind Upscal.app (available on the Mac App Store and Microsoft Store). | 17.5 / 20 Operated by XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. |
| Engineering & privacy | 12 / 15 Uses `/api/legacy/upload` and `/api/legacy/status` async polling; FAQ #10 explicitly states all uploaded and processed images are permanently deleted within 24 hours. | |
| Task quality | 58.5 / 65 PSNR vs 2048px GT: 27.5 dB · SSIM: 0.89 · Edge Gradient Correlation: 0.6685 · High-Freq Sharpness Ratio: 0.4995 · Calibration Plate PSNR: 16.22 dB | 53.5 / 65 2X super-resolution (512→1024) achieved full-frame PSNR = 27.12 dB, wooden sign ROI plate_psnr_db = 30.46 dB, SSIM = 0.9711, and edge_corr = 0.6117 with zero ringing artifacts (53.5/65). |
| Deliverable specifications | 20 / 20 No free unwatermarked export (0/8); Free scale factor: 4x (2048×2048 (4.0x / 400% · Free without login)) | 15.5 / 20 Free tier exports 2X (1024×1024, max 2800px) without watermark; 4X requires Pro (15.5/20). |
| Processing speed | 8 / 15 Network-observed server wait: 20.68s (API mode: async_poll; end-to-end 22.22s shown for reference only, never penalized) | |
