Comparison

CrowdWater | SPOTTERON vs Notes+

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

Head to head
About

CrowdWater | SPOTTERON

Features
Read full description

CrowdWater is a SNF-funded project at the University of Zurich, Department of Geography, Unit Hydrology & Climate. This PhD project aims to examine the potential of “crowdsourcing”, meaning observations of voluntary participants. As the name suggests, the project looks at the potential of crowdsourcing in the field of hydrology. We will collect water level, streamflow and soil moisture data. The project will not only look at the possibilities of collecting data but also at the value of this data for hydrological forecasts. The long-term aim of the project is to collect a large amount of data and to improve the forecast of hydrological events, such as droughts or floods. There are two basic parts of the CrowdWater project. On the one hand, we will assess public involvement in hydrological observations. For this we use a “geocaching” type approach with the help of smartphones. By using an app that will be developed over the coming months, users can install a virtual measuring station. Anyone can then add their observations to this station and all observations will be collected and published anonymously on the CrowdWater homepage. Another goal of the CrowdWater project is to analyse the potential of using the collected data for hydrological models. This question will be addressed by using hydrological computer models to predict streamflow. These models will assess the benefit of the crowd-sourced data. At the moment the app is under development, so for now we are collecting data with the help of information boards and paper forms at various locations in the greater Zurich area. This data will help us to improve our methodology and enables us to make a first assessment of the data quality. As soon as new stations are installed, we will post the location here and on facebook. Powered by SPOTTERON Citizen Science Apps

About

Notes+

Enhance your digital note-taking with realistic writing tools, diverse templates, and AI-powered features. Import files, organize with versatile tools, and boost productivity with multi-tasking capabilities. Secure your notes and access smart AI assistants for summaries, quizzes, and transcriptions.

Highlights
  • Realistic writing experience
  • File import and conversion
  • Versatile note-taking tools
  • Wide selection of magical pens
  • AI-powered summarization and quiz generation
  • Multi-tasking features
  • Password protection
Features
Read full description

8M+ Active Users Today A Wide Selection of Templates & Tools Revolutionise your digital note-taking experience with Notes+ ! Dive into a world of endless possibilities with our realistic writing experience and elevate your digital note-taking with our exciting features: Import and Convert Files ●Seamlessly Import Files from Windows or Mac ●Convert Web Pages to PDFs and Import Them ● No matter where you are - be it in the classroom or in the office- easily sync your notes on iPad and iPhone at any time. Versatile Tools and Features ●Large oversized notes ●Use the Margin Extension to create space between your documents ●A wide selection of colours available to choose from ●Use the inbuilt draft feature to jot down your notes quickly Creative lines and tools ●Access the extremely versatile dotted and wavy line pen ●Boost your memorisation by using our cover tool ●Draw precise shapes using automatic tools Magical Pens ●A wide selection of 32 different types of pens ●Capture important parts of your document with the screenshot pen ●Write notes temporarily using the wonderful vanish pen ●Highlight key points with precision and style using the laser pen Multi-tasking Made Easy ●Boost your productivity with our enlarged picture-in-picture feature ●Jump between pages with ease using the grid view ●Add related documents using the Associated Documents feature ●Keep your notes secure with our robust password protection feature. ●Access the Web without ever leaving the app ●Solve a problem multiple times using the layering function with up to three layers ●Record important information using the voice recording feature Productivity Boosters ● Easily solve math problems using our built-in-calculator ● Stay on track with a built-in timer ● Simultaneously view the same document in a split view using the Dual Pages function Moreover, you can access even smarter AI tools. ●AI Summary Generator ●AI Quiz Generator ●AI Flashcard Generator ●AI Audio Transcription and Summary ●AI YouTube Subtitle and Summary ●AI NoteSnap Pen In-App Subscription Service: ●AI One monthly subscription ●AI One yearly subscription ●AI Summary Generator monthly subscription ●AI Quiz Generator monthly subscription ●AI Flashcard Generator monthly subscription ●AI Audio Transcription and Summary monthly subscription ●AI YouTube Subtitle and Summary monthly subscription ●AI NoteSnap Pen monthly subscription App provides auto-renewal service for subscription. Price: ●AI One monthly subscription, 6 AI tools included, US$24.99/month ●AI One yearly subscription, US$137.99 per year ●Monthly subscription for other AI tools, US$9.99/month This pricing applies to users in the United States. Pricing in other countries or regions may vary, and the actual charges may be converted to your local currency based on your country or region of residence. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be determined. Subscriptions are managed by the user, and users can turn off auto-renewal by going to their account settings after purchase. To disable auto-renewal for Apple ID subscriptions, go to "Settings" on your iOS device, then "iTunes Store," select "Apple ID," tap "View Apple ID," go to "Account Settings," click on "Subscriptions," select the subscription name, and cancel the subscription. For business partnership inquiries, feel free to contact us at bella@notesplus.com. Terms of Service: www.notesplus.com/terms-and-conditions-for-ai-pen Privacy Policy: www.notesplus.com/privacy-policy-for-ai-pen

Screenshots

CrowdWater | SPOTTERON4 screens
Notes+3 screens

Verdict

The call

The clearest difference is in-app purchases: CrowdWater | SPOTTERON at none against Notes+'s 35. CrowdWater | SPOTTERON also leads on iOS requirement (12.0 vs 17.0). Notes+'s advantage is update cadence (every 9 days vs every 3 months). On price, 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. Notes+ sells 35 in-app purchases, starting at $3.99 per month. CrowdWater | SPOTTERON asks for nothing beyond the download.

UpkeepUpdate frequency

CrowdWater | SPOTTERON ships an update every 3 months, Notes+ every 9 days. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 7 level
CrowdWater | SPOTTERON versus Notes+: the parameters behind the verdict, then further details
ParameterCrowdWater | SPOTTERONNotes+
PriceFreeFree
Rating—4.7 (3.2K ratings) — better
Positive reviews—76.3% of reviews
Number of ratings—3.2K — better
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size110 MB161 MB
Age rating4+17+
DeveloperSPOTTERON GmbhSINGFISH PTE. LTD.

Bugs and requests

CrowdWater | SPOTTERON

Not enough reviews yet to summarise bugs or requests.

Notes+

Reported bugs

5 issues
  • Notes disappearing or not saving properly
  • Pen/writing not registering correctly
  • Crashes when trying to add new pages
  • Imported PDFs losing formatting
  • Eraser tool not working as expected

Requested features

7 requests
  • Ability to create custom templates
  • Improved handwriting recognition
  • Customizable pen/brush tools
  • Better organization and folder management
  • Seamless sync across all devices
Show 2 more
  • Enhanced search capabilities
  • Backup and restore options

In-app purchases

None

CrowdWater | SPOTTERON

No in-app purchases

35 purchases

Notes+

Subscriptions12
  • Fonts$3.991 Month
  • AI Solver$7.991 Month
  • AI Flashcard Generator$7.991 Month
Show 9 more
  • AI Quiz Generator$7.991 Month
  • AI Summary Generator$7.991 Month
  • Fonts$9.991 Year
  • Unlock four AI features$12.991 Month
  • AI Audio to Text Summary$15.991 Month
  • AI Video to Text Summary$15.991 Month
  • AI One$24.991 Month
  • Unlock four AI features$71.991 Year
  • AI One$137.991 Year
One-time23
  • 词根词缀背单词$2.99
  • Deep Blue Small Floral Notebook$5.99
  • Teal Undated Digital Planner$7.99
Show 20 more
  • Ultimate Digital Notebook$7.99
  • Everyday Notebook$7.99
  • Recipe Book$8.99
  • 2026-2027 Student Planner (Pastel)$9.99
  • Student Digital Notebook$9.99
  • Undated ADHD Planner$9.99
  • Digital Recipe Book$9.99
  • Undated Student Planner$9.99
  • 2026 Planner (Starts on Sunday)$9.99
  • 2026 Daily Digital Panner$9.99
  • 2026 The Everyday Digital Planner$9.99
  • 2026 Apple-All In One Planner$9.99
  • 2026-2027 Study Planner Pro$9.99
  • Simple Smart Notebook Mocha$9.99
  • The Undated Digital Planner$9.99
  • Undated All-in-One Planner (Pastel)$11.99
  • Mid Year All In One Planner$11.99
  • 2026 - 2027 Minimal Digital Planner$11.99
  • ADHD Task Funnel Purple$11.99
  • Belge kısıtlamasını kaldır$24.99

Questions

Is CrowdWater | SPOTTERON free?
CrowdWater | SPOTTERON is free to download, with no in-app purchases.
Is Notes+ free?
Notes+ is free to download, with in-app purchases available.
Do CrowdWater | SPOTTERON or Notes+ have ads?
Neither CrowdWater | SPOTTERON nor Notes+ shows ads.
Which is updated more often, CrowdWater | SPOTTERON or Notes+?
CrowdWater | SPOTTERON ships an update every 3 months, and Notes+ every 9 days. Most recently, CrowdWater | SPOTTERON was updated on October 11, 2026 and Notes+ on October 21, 2026.

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