Comparison

Quick Stochastics PRO vs ReadBay

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

Head to head
About

Quick Stochastics PRO

Features
Read full description

This app offers the option of entering data sets from an empirical sample or data with corresponding probabilities. Depending on the specifications, the mean and empirical variance or expected value and variance with standard deviation are calculated step by step. Probability can be entered as decimal numbers. The sample of data can be entered as natural numbers. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - important statistical values for a sample of data with corresponding probabilities are calculated - x as data or P(X) as probabilitie must be entered - mean, empirical variance, standard deviation are calculated - or expected value, variance, standard deviation are calculated - results are calculated and shown in detail - history to save the input - detailed solution - natural or decimal numbers are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - touching the plus button on the bottom of the table adds a new row to enter more data - press the check mark button at the bottom right to start the calculation - if values are missing, the corresponding field is highlighted in yellow - if the values are incorrect, the affected field will be highlighted in red - a short message explains why a value is incorrect - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared - the sum of probabilities P(X) must be equal to 1.0

About

ReadBay

Access concise summaries and audio versions of bestselling books in under 15 minutes. Master key insights from business, self-help, and personal development titles for faster learning and habit building.

Highlights
  • 15-minute book summaries
  • Audiobook summaries
  • Offline reading
  • Progress tracking
  • Habit building challenges
  • Bookmark favorite notes
Features
Read full description

Book Summary & Audiobook App - Learn in 15 Minutes Master key insights from bestselling self help, business books, and personal development titles with ReadBay's quick book summaries! Our speed reading approach delivers professional development content faster than Blinkist or Headway. Why ReadBay Beats the Competition: 15 minute reads - Perfect for daily learning Audiobook summaries for hands-free motivation Offline reading - Learn anywhere, anytime Productivity tools with progress tracking Habit building challenges and goals Popular Categories: Leadership books, Business books, Self Help, Productivity, Psychology, Money & Investing, Professional development, Communication Perfect for Quick Book Summaries: Busy professionals seeking key insights Students wanting speed reading solutions Anyone building daily learning habits Commuters maximizing time with audiobook content Smart Learning Features: Bookmark favorite book notes Set habit building challenges Learn faster with audio mode Motivation through progress tracking Start your learning journey with FREE book summaries! Website: https://www.growthmindapps.com Terms: https://www.growthmindapps.com/terms Privacy: https://www.growthmindapps.com/privacy

Screenshots

Quick Stochastics PRO4 screens
ReadBay4 screens

Verdict

The call

The clearest difference is price: ReadBay at Free against Quick Stochastics PRO's $1.99. ReadBay also leads on update cadence (every 10 days vs every 4 weeks). Quick Stochastics PRO's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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

ReadBay is free to download; Quick Stochastics PRO costs $1.99 up front. ReadBay sells 4 in-app purchases, starting at $4.99 per month. Quick Stochastics PRO asks for nothing beyond the download.

UpkeepUpdate frequency

Quick Stochastics PRO ships an update every 4 weeks, ReadBay every 10 days. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

Scorecard3 real differences · 7 level
Quick Stochastics PRO versus ReadBay: the parameters behind the verdict, then further details
ParameterQuick Stochastics PROReadBay
Price$1.99Free — better
Rating—4.8 (239 ratings) — better
Positive reviews—84.5% of reviews
Number of ratings—239 — better
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size179 MB60 MB
Age rating4+17+
DeveloperGlindemann, Sennoun, Langer GbRBange Sabastine Hwonyi

Bugs and requests

Quick Stochastics PRO

Not enough reviews yet to summarise bugs or requests.

ReadBay

Reported bugs

2 issues
  • Purchased lifetime subscription not accessible on new device
  • Identical summaries for different books

Requested features

3 requests
  • Support for French books
  • Ability to share summaries to Kindle
  • More language options (e.g., Chinese)

In-app purchases

None

Quick Stochastics PRO

No in-app purchases

4 purchases

ReadBay

Subscriptions3
  • Monthly Pro Membership$4.991 Month
  • Pro Annual Membership$19.991 Year
  • Yearly Pro Membership3 Days trial$24.991 Year
One-time1
  • Lifetime Membership$39.99

Questions

Is Quick Stochastics PRO free?
Quick Stochastics PRO costs $1.99, with no in-app purchases.
Is ReadBay free?
ReadBay is free to download, with in-app purchases available.
Do Quick Stochastics PRO or ReadBay have ads?
Neither Quick Stochastics PRO nor ReadBay shows ads.
Which is updated more often, Quick Stochastics PRO or ReadBay?
Quick Stochastics PRO ships an update every 4 weeks, and ReadBay every 10 days. Most recently, Quick Stochastics PRO was updated on October 25, 2026 and ReadBay on October 23, 2026.

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