Comparison

Data21 vs Invent Idea

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

Head to head
About

Data21

This application allows users to anonymously mark and collect important data and feedback about their products and businesses. It's designed to help businesses gather insights for investment, sales, and purchasing decisions.

Highlights
  • Anonymous data collection
  • Product feedback gathering
  • Business insights
  • Investment data support
  • Sales improvement data
  • Purchasing optimization data
Features
Read full description

Software Patent/INPI Register : BR 512021000013-7. In this application you can mark and collect important (anonymously) data and feedbacks about your product and business. The largest companies in the world collect data to receive bigger investments, to sell more and buy better (Nesse aplicativo você pode marcar e coletar importantes dados anônimos e feedbacks sobre o seu produto e negócio. As maiores empresas do mundo coletam dados para receber maiores investimentos, pra vender mais e comprar melhor.

About

Invent Idea

Explore if your invention idea is unique with a free patent search tool. Access millions of U.S. patents to find similar inventions using keywords. This app empowers everyday inventors with professional-grade tools.

Highlights
  • Free patent search tool
  • Keyword search for similar inventions
  • Access to Utility and Design patents
  • Privacy for invention ideas
  • Downloadable eBook on patent myths
  • Customer support
Features
Read full description

Have you ever seen an advertisement for a product or seen one selling in stores or online and said, “That product was my idea!”? Then this is the app for you! The Invent Idea App by For Sale By Inventor is geared specifically for everyday inventors to get started on their invention ideas. First time or seasoned inventors can start with our free patent search tool to determine if their invention idea has already been patented. This is an important first step as it can let you know if your idea is unique before spending time and money patenting and developing your invention. The Free Patent Search Tool accesses millions of issued United States Utility and Design Patents. New inventors can simply do a keyword search on the app to bring up the most similar inventions to theirs. The app scours the patent database and shows the user the most similar inventions. This app is geared for normal, everyday people with an invention idea to give them a no cost or obligation way to get started on their invention. Patenting and developing an invention can be costly and time consuming. Whether you are an electrician, plumber, carpenter, stay at home parent, doctor, or lawyer – this app was created for you! Becoming an inventor does not discriminate if you are male, female, young, or old. All you need is an idea, and this free patent search tool is the perfect way to start. Finally, the Invent Idea App by For Sale By Inventor gives everyday inventors tools that were once only available to industry insiders and professionals. Features: Patent Search Tool: Easy keyword search tool that delivers the most similar patents to the keyword terms entered Utility AND Design Patents: The Patent Search tool will provide results for both Utility Patents (How it Works) and Design Patents (What it Looks Like) Privacy: The information entered is not shared with any 3rd party so you can trust that your invention idea will be kept confidentially Education: Download the free eBook Patent Myths Exposed to learn more about protecting, developing, and selling your inventions Customer Support: The Invent Idea App is backed by For Sale By Inventor and their team is available to assist with any issues you may have with the app.

Screenshots

Data214 screens
Invent Idea4 screens

Verdict

The call

The clearest difference is update cadence: Data21 at every 5 days against Invent Idea's monthly. Data21 also leads on rating (5.0 vs 4.7). Invent Idea's advantage is ratings volume (3 vs 1) and iOS requirement (16.0 vs 26.4). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Data21 holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Data21 ships an update every 5 days, Invent Idea monthly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Data21 versus Invent Idea: the parameters behind the verdict, then further details
ParameterData21Invent Idea
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (3 ratings)
Positive reviews—100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 5 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.416.0 — better
Further details — not scored
Size34 MB84 MB
Age rating17+4+
DeveloperAlexandre Alves da CostaMontgomery Innovation Partners and Associates LLC

Customer experience

Data21

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Invent Idea

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Data21

No in-app purchases

None

Invent Idea

No in-app purchases

Questions

Is Data21 free?
Data21 is free to download, with no in-app purchases.
Is Invent Idea free?
Invent Idea is free to download, with no in-app purchases.
Which has better reviews, Data21 or Invent Idea?
Data21 is rated higher. Data21 averages 5.0 out of 5 from 1 ratings, while Invent Idea averages 4.7 from 3 ratings.
Do Data21 or Invent Idea have ads?
Neither Data21 nor Invent Idea shows ads.
Which is updated more often, Data21 or Invent Idea?
Data21 ships an update every 5 days, and Invent Idea monthly. Most recently, Data21 was updated on October 24, 2026 and Invent Idea on October 30, 2026.

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