Comparison

Power Analysis vs Ottermind

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

Head to head
About

Power Analysis

Design experiments and analyze data with confidence, even without extensive statistical knowledge. This app guides you through planning studies, determining necessary sample sizes, and understanding measurement quality. It supports various distribution types and automatically selects appropriate statistical tests.

Highlights
  • Guided experiment design
  • Sample size determination
  • Measurement quality assessment
  • Support for various distributions
  • Automatic statistical test selection
  • Interactive parameter adjustment
Features
Read full description

Design experiments and measurements confidently with minimal knowledge of statistics. Have you ever worried if the study you were planning would have enough data to conclude anything? Know how much data you need while you're still in the planning phase. Let the app do the statistics for you. • Easy to use interface helps you enter the pertinent information without being a statistics expert. • Know how many observations you'll need to measure what you want. • Know how good a measurement you'll get for any number of observations you set. • Visualizations • Play with sliders for key parameters and see how they affect the measurement • Supports measurements of rates and proportions (binomial distributions) in addition to continuous distributions • Chooses appropriate statistical test for you based on your experimental parameters. (Tests include t, z, chi square, and exact binomial). • Set your preferred risk of both false positives and false negatives (type I error and type II error) Can also be useful as an interactive study tool for learning about the statistics of measurement

About

Ottermind

Features
Read full description

Ottermind is an AI agent workspace for chat, files, tasks, and workflow automation. Use Ottermind to: - Work with AI assistants across everyday digital tasks - Chat with context from files, prompts, and project materials - Create and manage task workflows - Use voice input when you want to capture ideas quickly - Keep your account, files, and preferences available across devices Ottermind is designed for practical productivity: clear conversations, structured tasks, and secure account-based access. Privacy matters. You control what you upload, and you can delete your account from the app when you no longer want to use the service. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ottermind.ai/privacy Terms of Service: https://ottermind.ai/terms

Screenshots

Power Analysis4 screens
Ottermind4 screens

Verdict

The call

The clearest difference is price: Ottermind at Free against Power Analysis's $4.99. Ottermind also leads on update cadence (weekly vs every 4 months). Power Analysis's advantage is in-app purchases (none vs 4) and iOS requirement (9.0 vs 16.4). On 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

Ottermind is free to download; Power Analysis costs $4.99 up front. Ottermind sells 4 in-app purchases, starting at $58.00 per month. Power Analysis asks for nothing beyond the download.

UpkeepUpdate frequency

Power Analysis ships an update every 4 months, Ottermind weekly. The most recent releases landed on September 22, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Power Analysis versus Ottermind: the parameters behind the verdict, then further details
ParameterPower AnalysisOttermind
Price$4.99Free — better
Rating5.0 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.4
Further details — not scored
Size3 MB88 MB
Age rating4+4+
DeveloperA&X Analytics, LLC爱獭科技(杭州)有限公司

In-app purchases

None

Power Analysis

No in-app purchases

4 purchases

Ottermind

Subscriptions2
  • Otter Squad Monthly$58.001 Month
  • Otter Squad Yearly$549.991 Year
One-time2
  • 1,500 credits$11.90
  • 3,000 credits$23.49

Questions

Is Power Analysis free?
Power Analysis costs $4.99, with no in-app purchases.
Is Ottermind free?
Ottermind is free to download, with in-app purchases available.
Do Power Analysis or Ottermind have ads?
Neither Power Analysis nor Ottermind shows ads.
Which is updated more often, Power Analysis or Ottermind?
Power Analysis ships an update every 4 months, and Ottermind weekly. Most recently, Power Analysis was updated on September 22, 2026 and Ottermind on October 5, 2026.

Other comparisons