Image Upsample vs Defndr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Image Upsample
Enhance the clarity of your mobile photos by increasing their resolution. Simply select an image and tap a button to automatically process and magnify it, making details sharper and more visible.
- Magnify image resolution
- Automatic processing
- Improve image clarity
- Supports selected resolutions up to 1200*1200
- AI-powered enhancement
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Light-up is an app that magnifies the resolution of image, which can make image in mobile phones look clearer. After selecting the photo and touch 'light-up' button, the program will be executed automatically. After the progress bar is read out, the picture processing is completed. For images with too much noise or manual processing (such as beauty, compression, sharpening,cropped), the processing effect may not be good. Light-up only supports selected image resolution below 1200*1200 now. The current AI processing time may be slightly longer than the progress bar reading end time.
Defndr
This app acts as an SMS firewall, using on-device AI to detect and block spam, phishing, and scams. It prioritizes user privacy by processing all data locally on your device, ensuring your messages never leave your iPhone. Offers both free and premium features for enhanced protection.
- On-device AI spam detection
- Phishing and scam blocking
- Zero-trust privacy
- Custom keyword blocking
- Link protection
- Unlimited custom block lists (Pro)
- Allow lists for trusted contacts (Pro)
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Defndr is an SMS firewall that stops spam before it reaches you. On-device machine learning checks every message from unknown senders, blocks phishing and scams, and quietly sorts the rest into the right folder — without sending anything anywhere. Your messages never leave your iPhone. — ZERO-TRUST PRIVACY - 100% on-device processing - No cloud servers - Nothing to sign up for - Your data stays on your device FREE - On-device spam and scam detection - Custom keyword blocking - Protection against shortened and disguised phishing links - Automatic sorting into Transactions, Promotions and Junk - No ads, no data collection DEFNDR PRO - Advanced machine-learning detection for sophisticated scams - Adjustable sensitivity, from lenient to strict - Allow and block lists for senders you choose - Unlimited custom keywords - Detection for suspicious formatting, links and patterns - Custom theme studio with a gradient editor HOW IT WORKS Defndr plugs into iOS Message Filtering and runs silently in the background. Messages from people in your contacts are never touched — only texts from unknown senders are checked, and the verdict is decided entirely on your device. — Web: https://dro1d.org Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy: https://dro1d.org/defndr-privacy.html
Screenshots
Verdict
The clearest difference is rating: Image Upsample at 5.0 against Defndr's 3.0. Image Upsample also leads on device support (3 vs 1) and iOS requirement (14.1 vs 18.0). Defndr's advantage is ads (none vs shown). On price, ratings volume, update cadence and in-app purchases 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. Image Upsample sells 3 one-off in-app purchases and Defndr sells 2 in-app purchases, starting at $14.99 per year. Whichever you choose, the download price is not the number that matters.
Image Upsample holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Image Upsample ships an update every 2 months, Defndr every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Image Upsample | Defndr |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 31 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 子尧 纵 | DRO1D LABS LIMITED |
Customer experience
Image Upsample
Defndr
In-app purchases
Image Upsample
- 10 Energy Ore$2.99
- 36 Energy Ore$8.99
- 120 Energy Ore$27.99
Defndr
- Defndr Premium Yearly14 Days trial$14.991 Year
- Defndr Lifetime Premium Access$34.99









