Comparison

Graph Paper Maker vs IO

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

Head to head
About

Graph Paper Maker

Easily create custom graph paper with adjustable grid sizes, margins, and colors. Export your designs as PDF or image files for printing or sharing. This tool is perfect for notes, planning, design, study, or work.

Highlights
  • Flexible grid size (square/rectangular)
  • Adjustable margins
  • Line color and thickness settings
  • Optional guide lines
  • Export as PDF or image
  • Share via iOS share sheet
Features
Read full description

Create graph paper exactly the way you need—quickly and easily. Basic graph paper and PDF or image export are free. Customize the grid, margins, and colors, then save or share. ■Free • Flexible grid size (square or rectangular) • Separate spacing and line width for rows and columns • Set the number of lines • Adjustable margins • Line and background colors • Center and cross guide lines • Export as a vector PDF or an image • Share via the iOS share sheet ■Pro (one-time purchase) A one-time purchase unlocks the features below. There is no subscription. • Separate colors for horizontal and vertical lines • Odd or even lines, every other line, a custom interval, or only the lines you choose • Skip a set count starting from a chosen line • Star, circle, and double guide lines • No ads In Specify mode, line numbers appear on the preview so you can pick the right line. Exported PDFs and images do not include those numbers. If you already bought this app, Pro stays unlocked at no extra charge. ■How to Use Choose a paper size Adjust the grid size and settings Preview your layout Export as a PDF or image ■Perfect For Creating custom graph paper for notes or planning Printing grids for design, study, or work Anyone who wants a simple and fast tool Designed to be minimal and easy to use. Create the graph paper you need—anytime.

About

IO

Features
Read full description

Forget paper checklists. Check I/Os directly on the machine – where sensors and actuators are located. IO-INSPECTOR is an independent third-party tool for commissioning and functional testing in industrial automation environments. With your iPad or iPhone you can observe, document and - if approved, technically permissible and safety-compliant - switch/control signals on site. Less shouting in the workshop, less manual checking and more clarity right where the work takes place. WHY IO-INSPECTOR? • Project and variable import (for TIA Portal® projects): Import variable lists from common export formats (e.g. .xlsx or .csv). IO-INSPECTOR adopts the structure, data types and comments from the file provided - manual re-entry is not necessary. • HMI View Smart Connector: Quickly connect to your system and conveniently access information relevant to commissioning. The Smart Connector is intended to simplify connection and access to the required displays/views in practice - without having to imply an official manufacturer affiliation. • Fast system connection: Detect and connect devices in the local network quickly and clearly. • Live status and targeted control (OPC UA): Connect to compatible controllers via OPC UA and check signals in real time. • Observe: Track changes immediately. OPC is also accessible via the WebSocket protocol. • Control: Set outputs or markers specifically (Force/Modify), provided this is activated in the environment and meets the safety requirements. • Diagnostics: Identify problems more quickly, such as cabling or logic problems. • Digital documentation (PDF): Check off test steps digitally, add notes (e.g. “Sensor defective”, “Adjustment required”) and export a PDF report with your company logo and timestamp. • Filter and search: Filter by status (“Open”, “Done”) or search directly by symbol name. • Mark changes (round-trip support): Mark typos or name adjustments in the app so that you can later apply them in your engineering project in a controlled manner. • Share and collaborate on projects: Share projects so colleagues can continue with the same project status - including testing status and documentation progress (depending on the sharing/export method chosen). TECHNICAL NOTES/REQUIREMENTS • Compatibility: Developed for environments with SIMATIC® S7-1200 (FW 4.0+) and SIMATIC® S7-1500. • OPC UA: OPC UA must be activated on the CPU. Basic access may not require an additional license depending on your configuration; Actual requirements depend on device, firmware and project configuration. • Signals: Supports digital and analog signals (depending on project/export data and target system). • Network/Offline: Use in the machine's local WLAN; Project-related features can also be available without the Internet (depending on the scope of functions). PRICES • Download IO-INSPECTOR for free to create projects and use network scanning. Upgrade options are available for extended functions (e.g. project import, HMI write access (power tags), PDF export, OPC interface, HMI Smart Connector). • Download IO-INSPECTOR and simplify commissioning. Legal notice/trademark: IO-INSPECTOR is an independent third-party software. SIMATIC®, TIA Portal®, S7® as well as S7-1200 and S7-1500 are trademarks of Siemens AG. This app has no business relationship with Siemens AG and is not developed, supported or distributed by Siemens. All product and company names are used solely to describe compatibility and belong to their respective owners.

Screenshots

Graph Paper Maker4 screens
IO4 screens

Verdict

The call

The clearest difference is in-app purchases: Graph Paper Maker at none against IO's 1. IO's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 31 months). On price 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. IO sells 1 one-off in-app purchase. Graph Paper Maker asks for nothing beyond the download.

UpkeepUpdate frequency

Graph Paper Maker ships an update every 31 months, IO every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 4 level
Graph Paper Maker versus IO: the parameters behind the verdict, then further details
ParameterGraph Paper MakerIO
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 31 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.6 — better
Further details — not scored
Size7 MB15 MB
Age rating4++4
Developerkohei yamaneCJ Solution UG (haftungsbeschraenkt)

In-app purchases

None

Graph Paper Maker

No in-app purchases

1 purchases

IO

One-time1
  • Pro Version Lifetime$17.99

Questions

Is Graph Paper Maker free?
Graph Paper Maker is free to download, with no in-app purchases.
Is IO free?
IO is free to download, with in-app purchases available.
Do Graph Paper Maker or IO have ads?
Graph Paper Maker shows ads; IO does not.
Which is updated more often, Graph Paper Maker or IO?
Graph Paper Maker ships an update every 31 months, and IO every 2 weeks. Most recently, Graph Paper Maker was updated on November 3, 2026 and IO on November 5, 2026.

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