Comparison

OneLine:EXIF Frame & Watermark vs KnowCamera

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OneLine:EXIF Frame & Watermark

Effortlessly add EXIF data, camera logos, and personal signatures to your photos. Choose from elegant designs, minimalist frames, and magazine-style templates to enhance your images with accurate information and a professional aesthetic.

Highlights
  • One-click EXIF information retrieval
  • Variety of iconic camera logos
  • Upload personal signatures
  • Support for multiple image formats
  • Original image output, lossless
  • Multiple templates and frames
  • Batch export up to 100 photos
Features
Read full description

Auto add EXIF watermarks, iconic camera logos, and personal signatures to your photos. With elegant watermark designs, minimalist parameter frames, and magazine-style cover templates continually updated, we target your essential need for one-touch EXIF addition, meeting your stringent aesthetic standards. A light and beautiful signature, concise and accurate parameters — both a visual embellishment and a powerful tool to enhance the completeness and recognizability of your photographic works. Our goal is to have OneLine in hand, photo perfection in mind. 【Our Interaction Focus】 ◆ One-click EXIF Information Retrieval Connect with multiple brands of cameras and smartphones to access manufacturer annotations.One-click access to read camera name, lens type, aperture, shutter speed, focal length, ISO, time, latitude and longitude, and other EXIF metadata.Achieve what you see is what you get, with adjustable parameters and free editing capabilities. ◆ A Variety of Iconic Logos Leica, Hasselblad, Phase One, Sony(α/G Master), Canon, FUJI, Nikon, Ricoh, LUMIX, SIGMA, ZEISS, OLYMPUS, Rollei, Sinar, DJI, iPhone, Google Pixel, Xiaomi...High-end brand logos are at your disposal. ◆ Upload Your Personal Signature In “Edit - Logo”, add personalized signatures and studio logos in one click with batch processing, automatically saved to meet your flexible pairing needs. Plus, the "Another One" feature for saving preferences doubles your efficiency, saving both time and effort. ◆ Support for Multiple Image Formats Supports a variety of image formats including JPEG, PGN, BMP, WEBP, DNG, NEF, RAF, CR3, etc. Transfer photos taken with digital cameras to your phone, and as long as they are readable in the iPhone Photos, we can accurately read them. Exif information incomplete? No problem, from logos to text, everything is customizable. ◆ Original Image Output, Lossless and Uncompressed Whether paid or not, all output images are synthesized using the original picture, maintaining the original picture quality resolution, lossless, uncompressed and ad-free. ◆ Multiple Templates, Switch at Will Don’t like the current template? It's okay, click the button once to change one, directly view the effect of your photo after synthesis, with surprises and eye-catching designs, there's always one that resonates with you. ◆ Batch Export, Double Efficiency Batch processing feature, auto-reuses your parameter preferences, supports up to 100 photos for one-click export. ◆ Satisfying Copy Library, No Brain Required Photography quotes, literary phrases, wise and poetic...The carefully selected phrases are ready, click to change a new one. ◆ Collage Frames and Magazine Covers In addition to param watermark templates, there are a host of vintage frames, classic narrow frames, film sense frames, grid collages, magazine posters and photo book cover styles, just to enhance the visual experience of your single photo and to add a finishing touch to photo series. ◆ Free and Pro, Take What You Need Classic param templates are available for your use, free and considerate. Exclusive templates for Pro members after design are also continuously updated. We look forward to your support to accelerate updates. 【In-App Purchase Description】 Pro Membership Benefits: Exclusive aesthetic templates with regular updates. Purchase cycle: 1 month (monthly subscription), 1 year (annual subscription), or permanent (one-time purchase). Payment: Once the user confirms the purchase and completes the payment, it will be charged to the iTunes account. Renewal: The Apple iTunes account will automatically deduct the fee for renewal 24 hours before the expiration date, extending the subscription period by one cycle. 【Related Agreements】 User Agreement http://www.5258mall.com/yihang/service_agreement_en.html Privacy Policy http://www.5258mall.com/yihang/privacy_policy_en.html 【Contact Us】 Email: oneline@shencaiee.com We look forward to hearing from you.

About

KnowCamera

Features
Read full description

Professional visual AI that instantly analyzes everything. Snap photos to identify products, translate foreign text, and unlock smart insights. Simple to use, highly accurate. Try it now! KEY FEATURES • Instant image analysis and recognition • Product details identification • Multi-language text translation • Smart content interpretation • Voice reading support • Analysis history tracking • Multiple UI themes PERFECT FOR • Shopping and product research • Travel and translation needs • Learning and education • Daily curiosity Download KnowCamera and transform your camera into AI-powered smart eyes!

Screenshots

OneLine:EXIF Frame & Watermark4 screens
KnowCamera4 screens

Verdict

The call

The clearest difference is in-app purchases: KnowCamera at none against OneLine:EXIF Frame & Watermark's 3. OneLine:EXIF Frame & Watermark's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OneLine:EXIF Frame & Watermark sells 3 in-app purchases, starting at $0.99 per month. KnowCamera asks for nothing beyond the download.

UpkeepUpdate frequency

OneLine:EXIF Frame & Watermark ships an update every 3 weeks, KnowCamera fortnightly. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 8 level
OneLine:EXIF Frame & Watermark versus KnowCamera: the parameters behind the verdict, then further details
ParameterOneLine:EXIF Frame & WatermarkKnowCamera
PriceFreeFree
Rating4.8 (16 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings16 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size100 MB2 MB
Age rating4+12+
Developer仲川 刘爱问答科技(北京)有限公司

In-app purchases

3 purchases

OneLine:EXIF Frame & Watermark

Subscriptions2
  • Monthly$0.991 Month
  • Yearly$6.991 Year
One-time1
  • Lifetime$19.99
None

KnowCamera

No in-app purchases

Questions

Is OneLine:EXIF Frame & Watermark free?
OneLine:EXIF Frame & Watermark is free to download, with in-app purchases available.
Is KnowCamera free?
KnowCamera is free to download, with no in-app purchases.
Do OneLine:EXIF Frame & Watermark or KnowCamera have ads?
Neither OneLine:EXIF Frame & Watermark nor KnowCamera shows ads.
Which is updated more often, OneLine:EXIF Frame & Watermark or KnowCamera?
OneLine:EXIF Frame & Watermark ships an update every 3 weeks, and KnowCamera fortnightly. Most recently, OneLine:EXIF Frame & Watermark was updated on October 20, 2026 and KnowCamera on October 17, 2026.

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