Comparison

Memorize Pi Digits vs Actum Pro

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

Head to head
About

Memorize Pi Digits

This app helps you memorize digits of Pi, offering up to one million digits for practice. It features a dark mode interface and a network competition mode for up to five players. Ideal for educational purposes and memory improvement.

Highlights
  • Memorize up to 1 million Pi digits
  • Dark mode UI design
  • Network competition mode (up to 5 players)
  • Educational game for memory improvement
  • Track progress day by day
Features
Read full description

Pi is constant, it is represented by the Greek letter π. The numerical value of π is 3.1415926....... Pi is infinite series irrational number. From wikipedia: Piphilology is the practice of memorizing large numbers of digits of π, and world-records are kept by the Guinness World Records. The record for memorizing digits of π, certified by Guinness World Records, is 70,000 digits, recited in India by Rajveer Meena in 9 hours and 27 minutes on 21 March 2015. This app is a tool to help you memorize pi digits, we offer first 1 million (1000000) Pi digit. It is the only tools your need to learn Pi. If you want to learn Pi ( π ), it should be the best Pi trainer software. You can learn Pi from 101 to Guinness World Records holder. This game is a very good educational game, learn it day by day. Some days later you will memory a lot of Pi Digit. Many users report that this app can help them to remember pi number, they can't believe that they can remember few hundred digits. But it is real. Every year March 14th is Pi day, to Celebrate Pi Day you can try to remember the first 100 digits. Using our app, you can do it in few hours. The UI design of this game is dark mode, it is the most modern app UI design. You can see the new coming OS also add dark mode theme. Add network competition mode, if all the devices are connected same local area network. You can create a network competition up to 5 people play on same time. FB : https://www.facebook.com/Pi-314-342764079883765/

About

Actum Pro

Read full description

Actum Pro turns transcript deadlines into a clear daily pace, helping court reporters, scopists, proofreaders, and transcriptionists decide what to work on today. Add each assignment’s estimated workload and deadline. Actum Pro calculates the pace needed to finish your active work on time and adjusts as your workload changes. Choose the measure that fits your work: • Pages for transcript production, scoping, or proofreading • Recorded minutes for audio or video transcription Court reporters can track writing separately from scoping. Writing progress does not count toward the daily scoping goal, while upcoming work remains visible for planning. ACTUM PRO LITE • Core daily pacing • Up to five active jobs • Role-aware production stages • Progress history and completed-job search • Backup, restore, and CSV export ACTUM PRO PREMIUM • Unlimited active jobs • Work Calendar and workload planning • “Can I Take This Job?” capacity preview • Search, sorting, and multi-job progress tools • Multi-proceeding jobs • Expanded notes, reminders, and workflow details Start with the essentials, then reveal more tools as your workload grows. Your saved information remains in the same app when your access level changes. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Memorize Pi Digits4 screens
Actum Pro4 screens

Verdict

The call

The clearest difference is price: Actum Pro at Free against Memorize Pi Digits's $4.99. Actum Pro also leads on ads (none vs shown) and update cadence (daily vs every 5 months). On in-app purchases, 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

Actum Pro is free to download; Memorize Pi Digits costs $4.99 up front. Memorize Pi Digits sells 1 one-off in-app purchase and Actum Pro sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Memorize Pi Digits ships an update every 5 months, Actum Pro daily. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
Memorize Pi Digits versus Actum Pro: the parameters behind the verdict, then further details
ParameterMemorize Pi DigitsActum Pro
Price$4.99Free — better
Rating4.4 (155 ratings) — better—
Positive reviews74.4% of reviews—
Number of ratings155 — better—
Update frequencyEvery 5 monthsDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size103 MB6 MB
Age rating4+4+
DeveloperOscar TsangDC Digital Limited Liability Company

In-app purchases

1 purchases

Memorize Pi Digits

One-time1
  • Remove AD$1.99
2 purchases

Actum Pro

Subscriptions2
  • Actum Pro Premium Monthly14 Days trial$7.991 Month
  • Actum Pro Premium Annual14 Days trial$69.991 Year

Questions

Is Memorize Pi Digits free?
Memorize Pi Digits costs $4.99, and also offers in-app purchases.
Is Actum Pro free?
Actum Pro is free to download, with in-app purchases available.
Do Memorize Pi Digits or Actum Pro have ads?
Memorize Pi Digits shows ads; Actum Pro does not.
Which is updated more often, Memorize Pi Digits or Actum Pro?
Memorize Pi Digits ships an update every 5 months, and Actum Pro daily. Most recently, Memorize Pi Digits was updated on November 6, 2026 and Actum Pro on November 6, 2026.

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