Comparison

Smartune vs PDF Merge

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

Head to head
About

Smartune

Features
Read full description

SmarTune™ control system, uses Bluetooth™ Mesh, Wi-Fi, and PLC technology to control your fixtures from anywhere. Simply use your mobile device to connect your fixtures from anywhere, change the color ratio and intensity instantly. Grow3™ LED fixtures have the ability to be controlled and monitored for all lighting factors that go into optimizing your grow with the SmarTune™ wireless control system you can manage your Grow3™ fixtures from your phone, tablet, or computer. Quickly set up lighting zones, enable lighting automation and gain control over light intensity, spectrum, and color ratios. ​ SmarTune™ control system integrates to your layout to incorporate various zone controls, added sensors, and existing integrated control systems. Fully Adjustable Light Color SmarTune™ allows you full control of the light color output. You can adjust the color and brightness of each color light. Adjusting the color ratio to your desired settings easily through SmartTune™. You can control as much or as little as you like. Available with pre-set growth phase light recipes or design your own spectrum/color ratio and intensity settings. Wireless Control Communications and controls are easy through the SmarTune™ system. Easily communicate with all Grow3 lights within your greenhouse. No set-up or programming required – the mesh network sets itself up. The Grow3 lights, equipped with Bluetooth® communication, each light acting as a node within the network generating its own mesh for long distance communications. Easy Schedule Set-Up Set schedules, light recipes, and zone control all on the Grow3™ SmarTune™ app. Adjusting the programming for the grow lights to accommodate different types of crops and growth stages. You can create and save your own grow recipes to suit and adapt to your individual requirements and conditions. Grouping & Zone Controls Utilizing the mesh network technology and controls through the Grow3™ app, the LED light system can be programmed for multiple zone controls with different schedules and spectrum outputs. Pre-set Growth Stage Recipes SmarTune™ allows you full control of the light color output. You can adjust the color and brightness of each color light. Adjusting the color ratio to your desired settings easily through SmartTune™. You can control as much or as little as you like. Available with pre-set growth phase light recipes or design your own spectrum/color ratio and intensity settings. Save More Energy Everyone knows that LED lighting can save you energy from day 1. However, you can save even more by controlling your lights and program them to a schedule to save even more power. Initially, most LED systems can save you 40%-50%. Using scheduling, dimming for specific growth periods you could save up to another 50%. Add Sensors & AI Automation and system integrated sensors can save additional energy, reduce power and labor for plant health monitoring. Add on features, such as DLI sensors, leaf health cameras, PPFD monitoring, can be integrated to the Grow3 system, to create a healthy growth environment.

About

PDF Merge

Easily merge multiple PDF files into one cohesive document or split large PDFs into smaller sections. This app also allows you to fill out forms and add your signature directly within the application.

Highlights
  • Merge multiple PDFs
  • Split large PDFs
  • Fill and sign documents
  • Convert images to PDF
  • User-friendly interface
Features
Read full description

PDF merge gives you many PDF features in one. Seamlessly handle your PDF files with precision and efficiency using our versatile set of tools. Are you tired of searching for the perfect solution to merge your PDFs? Look no further! Our app provides not only PDF merge capabilities but also an advanced PDF merger, allowing you to effortlessly combine multiple PDF files into a single, cohesive document. The combiner PDF feature sets our app apart, offering an intuitive interface for merging PDFs with unmatched ease. Whether you're combining reports, presentations, or any other PDF documents, our tool ensures a smooth and efficient process. But that's not all – our PDF combine functionality goes beyond simple merging. With our innovative split PDF feature, you can easily break down large PDFs into smaller, more manageable parts. This feature is perfect for extracting specific sections or pages from extensive documents, tailoring your PDFs to meet your exact needs. Need to add the finishing touch to your PDF? Our app goes above and beyond by including a fill and sign PDF feature. Add your signature or fill out forms directly within the app, saving you time and eliminating the need for additional tools. With PDF merge, PDF merger, Photo to PDF, Image to PDF, combiner PDF, PDF combine, split PDF, and fill and sign PDF capabilities, our app provides a comprehensive solution for all your PDF management needs. The user-friendly interface ensures that you can navigate through these powerful features effortlessly, making document management a breeze. Experience a seamless and efficient document workflow on iOS. Download our app now and take control of your PDFs like never before Terms of use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.appfluxlabs.com/privacy-policy

Screenshots

Smartune3 screens
PDF Merge4 screens

Verdict

The call

The clearest difference is in-app purchases: Smartune at none against PDF Merge's 4. PDF Merge's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDF Merge sells 4 in-app purchases, starting at $4.99 per 7 days. Smartune asks for nothing beyond the download.

UpkeepUpdate frequency

Smartune ships an update every 9 days, PDF Merge weekly. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Smartune versus PDF Merge: the parameters behind the verdict, then further details
ParameterSmartunePDF Merge
PriceFreeFree
Rating—4.6 (11 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—11 — better
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size7 MB27 MB
Age rating4+9+
DeveloperLED Smart Inc.AppFlux Labs

In-app purchases

None

Smartune

No in-app purchases

4 purchases

PDF Merge

Subscriptions3
  • Unlimited Access$4.997 Days
  • Unlimited Access$5.991 Month
  • Unlimited Access$24.991 Year
One-time1
  • Lifetime Premium$29.99

Questions

Is Smartune free?
Smartune is free to download, with no in-app purchases.
Is PDF Merge free?
PDF Merge is free to download, with in-app purchases available.
Do Smartune or PDF Merge have ads?
Neither Smartune nor PDF Merge shows ads.
Which is updated more often, Smartune or PDF Merge?
Smartune ships an update every 9 days, and PDF Merge weekly. Most recently, Smartune was updated on October 4, 2026 and PDF Merge on October 24, 2026.

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