Comparison

Random Number Generator RN vs Octuple Calc

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

Head to head
About

Random Number Generator RN

Features
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A powerful random number generator tool that lets you customize number animations, set your own number range, generate random numbers automatically with a countdown timer, review history records, and keep the screen always on. **Subscription Agreement** Payment: Upon confirmation of purchase, the fee will be charged to your iTunes account. Automatic Subscription Renewal: Unless auto-renew is turned off at least 24 hours before the end of the current subscription period, the subscription will automatically renew. Renewal Charges: Your account will be charged for renewal within 24 hours of the end of the current period, and the cost of the renewal will be provided. Subscription Management: Users can manage their subscriptions. After purchase, auto-renewal can be turned off in the user's Account Settings. Cancellations and Refunds: Cancellations and refunds are directly managed by the store. Unused Portion of Free Trial: If a free trial period is offered, any unused portion will be forfeited when the user purchases a subscription to that publication. **User Agreement and Privacy Terms** https://www.kai7.app/p/privacy-policy.html

About

Octuple Calc

Features
Read full description

Display eight calculators and perform calculations with each one.

Screenshots

Random Number Generator RN4 screens
Octuple Calc1 screens

Verdict

The call

The clearest difference is in-app purchases: Octuple Calc at none against Random Number Generator RN's 4. Octuple Calc also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (15.8.3 vs 17.0). Random Number Generator RN's advantage is ads (none vs shown). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Random Number Generator RN sells 4 in-app purchases, starting at $0.29 per 7 days. Octuple Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Random Number Generator RN ships an update monthly, Octuple Calc every 2 weeks. The most recent releases landed on August 24, 2026 and September 10, 2026 respectively.

Scorecard4 real differences ยท 2 level
Random Number Generator RN versus Octuple Calc: the parameters behind the verdict, then further details
ParameterRandom Number Generator RNOctuple Calc
PriceFreeFree
Update frequencyMonthlyEvery 2 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.015.8.3 โ€” better
Further details โ€” not scored
Size10 MB36 MB
Age rating4+4+
DeveloperKai Chi TsaoHideaki Uchikoshi

In-app purchases

4 purchases

Random Number Generator RN

Subscriptions3
  • VIP Weekly3 Days trial$0.297 Days
  • VIP 1 Month2 Months trial$0.991 Month
  • VIP 1 Yer$1.991 Year
One-time1
  • Premium Version$3.99
None

Octuple Calc

No in-app purchases

Questions

Is Random Number Generator RN free?
Random Number Generator RN is free to download, with in-app purchases available.
Is Octuple Calc free?
Octuple Calc is free to download, with no in-app purchases.
Do Random Number Generator RN or Octuple Calc have ads?
Octuple Calc shows ads; Random Number Generator RN does not.
Which is updated more often, Random Number Generator RN or Octuple Calc?
Random Number Generator RN ships an update monthly, and Octuple Calc every 2 weeks. Most recently, Random Number Generator RN was updated on August 24, 2026 and Octuple Calc on September 10, 2026.

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