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.
Random Number Generator RN
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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
Octuple Calc
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Display eight calculators and perform calculations with each one.
Screenshots
Verdict
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
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.
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.
| Parameter | Random Number Generator RN | Octuple Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 2 weeks โ better |
| Ads | No โ better | Yes |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 17.0 | 15.8.3 โ better |
| Further details โ not scored | ||
| Size | 10 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Chi Tsao | Hideaki Uchikoshi |
In-app purchases
Random Number Generator RN
- VIP Weekly3 Days trial$0.297 Days
- VIP 1 Month2 Months trial$0.991 Month
- VIP 1 Yer$1.991 Year
- Premium Version$3.99
Octuple Calc
No in-app purchases
Questions
Is Random Number Generator RN free?
Is Octuple Calc free?
Do Random Number Generator RN or Octuple Calc have ads?
Which is updated more often, Random Number Generator RN or Octuple Calc?
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